Adjusting a sporlan txv

When you’re ready to adjust the TXV, remove the stem cap on the bottom to expose the spindle. It’s easy to make the adjustment if you make a mark at the edge of the spindle. That way, you can keep track of how many turns you make. Many manufacturers recommend turning the spindle only a quarter-turn at a time.

Adjusting a sporlan txv. The Sporlan Tech Check app provides a simple way to interface with the premier Sporlan S3C Case controller solution. The user will be able to view case parameters, process values, graph selected sensors, and allow temporary override of EEVs, EEPRs and solenoids. Contractors and technicians will be empowered to easily troubleshoot a case without ...

A restricted metering device — thermostatic expansion valve or TXV — can cause a number of symptoms in a system. Here are the ways a TXV can become restricted: Wax buildup in the valve because the wrong oil was used in the system; Sludge from the byproducts of a compressor burnout; Partial TXV orifice freeze-up from excessive …

Thermostatic Expansion Valve - Sporlan - Type C. Sporlan Type C TEV's are designed for use on Air Conditioning and Refrigeration units. They regulate refrigerant flow by maintaining a nearly constant superheat at the evaporator outlet. The S and R series valves serve as functional replacements.7__GJE-1-1/2-C 3X4 SAE 5' __7. Sporlan Type G thermostatic expansion valves are designed for use on Air Conditioning and Refrigeration units. They regulate refrigerant flow by maintaining a nearly constant superheat at the evaporator outlet.<br/><br/>.Sporlan 124373 - OVE-20-C 7/8" x 1-3/8" ODF Thermal Expansion Valve w/ 60" Capillary (20 Ton)- Specifications: REFRIGERANT TYPE: R-22 APPLICATION: Commercial Refrigeration THERMOSTATIC CHARGE: C NOMINAL CAPACITY (TON): 20 INLET CONNECTION: 7/8" ODF OUTLET CONNECTION: 1-3/8" ODF EVAPORATOR EQUALIZER SIZE (INCH): 1/4" ODF EQUALIZER METHOD ...These valves have a removable 100 mesh strainer as a standard feature. These valves are designed for small refrigeration systems such as refrigerated cases, coolers, and freezers where space is limited and an external adjustment is desired. Overall height: 3.76" Element size: 43; Capillary length: 30" Connection: ODF inlet x ODF outletequipment manufacturer or Parker Hannifin -- Sporlan Division. • Sporlan is not responsible for any damage which may be caused by misuse or by installation of parts, accessories or controls which are not on the original specification. • Hot or cold parts of the valve which present a danger to the operator must be protected.

Svend Jepsen shows you how to adjust the superheat setting on four different Danfoss thermostatic expansion valves, where you use the 4 Kelvin factory settin...Use this bulletin to cross reference a standard Sporlan valve for replacement with a Sporlan Conventional Port (Type Q) valve in four easy steps: 1. Identify the valve to be replaced. The valve's body type, nominal capacity, and thermostatic charge can be determined by inspecting the valve. See the example below for a breakdown of a valve's9__N/A __9. 10__KT-43-VNB 5' (1.5M) ELEMENT __10. Sporlan Type Q thermostatic expansion valves are for use on Air Conditioning & Refrigeration units. They have a replaceable cartridge design. They regulate refrigerant flow by maintaining a nearly constant superheat at the evaporator outlet.Thanks guys in advance. We've got a 30 ton York split system and think we may have a bad txv or hanging solenoid valve. We just "rebuilt" it the txv, after not able to get superheat where it needed to be. The system is a split evaporator of course with a txv on each circuit going back to the one compressor. The questionable txv "frosts" up at it's outlet making me think it's not opening like ...SBFVEAAC - Expansion valve, balanced port, R22 family, external equalizer, 1/2 to 2/3 ton, 3/8" ODF inlet x 1/2" ODF outlet, C charge (medium temp) ... Sporlan URI Part Number: SBFVEAAC Vendor Part Number: 108687 Shipping Weight (Lbs.): 1.3 Available Thermostatic Charge: +50°F to -10°FStandard bleed port sizes are: 5%, 10%, 15%, 20%, 30%, and 40%. Bleed ports are designated by the percentage they increase nominal valve capacity at 40°F evaporator temper-ature. For example, a 2 ton TEV with a 30% bleed will have the capacity of: 2 x 1.3 = 2.6 tons. Refer to Page 17 for Ordering instructions.A thermostatic expansion valve (TXV) is built up around a thermostatic element separated from the valve body by a diaphragm. Its purpose is to regulate the rate at which refrigerant flows into the evaporator. TXVs can contain one of three different types of charge: universal charge. maximum operating pressure (MOP) charge.

Bulletin 210-40-4 - Sporlan Field Conversion of the Thermostatic Expansion Valves with Replaceable Thermostatic Elements: Bulletin 210-60 - Sporlan Thermostatic Expansion Valves Identification: SD-14 - Sporlan Thermostatic Expansion Valves Installation, Field Service, and Assembly: SD-289 - Sporlan TEV Installation and InstructionsSep 18, 2017 · This overview walks you through everything you need to know about safely and accurately adjusting the superheat on Danfoss TR6 thermostatic expansion valves.... Determine whether you need to increase or decrease the temperature reading on the thermostatic expansion valve. Locate the adjustment needle on the thermostatic expansion valve. Turn the adjustment needle one quarter turn counterclockwise to decrease the temperature. Each quarter turn is equal to one degree. Turn the adjustment needle a …Jan 9, 2017 · A restricted metering device — thermostatic expansion valve or TXV — can cause a number of symptoms in a system. Here are the ways a TXV can become restricted: Wax buildup in the valve because the wrong oil was used in the system; Sludge from the byproducts of a compressor burnout; Partial TXV orifice freeze-up from excessive moisture in ...

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The Sporlan Type F thermostatic expansion valves have a brass bar stock body. The F valve has flare fittings and is available with adjustable superheat, long lasting replaceable power element and accessible internal parts. Each valve is factory tested to ensure positive leak-free performance.Why does a Hard Shut Off TXV Close? Under what circumstances does it close? Learn this and more in this short video.Read all the tech tips, take the quizzes ...Identification Tag, Cartridge, Yellow, Qty. 5. Identification Tag, Cartridge, Yellow, Qty.4. Kit Contains- 1 Element Gasket, 2 Bushing Gaskets, 1 Bottom Cap Gasket, 1 Seal Cap Gasket, 1 Pushrod, 1 Pushrod Gauge, 1 Piston Assembly, 1 Seat Refinishing Tool with Grit Cloth, 1 Set of Instructions. ( For use with V Valves dated B65 or later and for W.The reception of Hydraulic Schematics. In to sporlan references available thermal images are standard used to determine the txv is the glass by danfoss provides climate technologies, press the outside air. Heat pumps manual and danfoss for air conditioning. High efficiency of sporlan to survey the txv.

TXV Selector Tool Emerson is pleased to announce the launch of the TXV Selection Tool. This online sele ction tool allows user s to enter t heir HVACR system characteristics such as refrigerant type, temp eratures, pressure drop and capacity, and then selects the best Emerson thermal expansion valv es for the ...About this HVAC Tip. Troubleshooting, Heat Pump, AC. In this video, I determine how to use the subcooling charge curve to adjust the charge properly.PRESSURE SETTINGS - The CRO(T)-6 and CRO(T)-10. valves have adjustment ranges of 0/60 psig or 30/110 psig. The CRO-4 has adjustment ranges of 0/20, 0/50 or 0/75 psig. For applications requiring settings beyond these ranges, contact your Sporlan representative. in this bulletin, the Sporlan warranty is void.225. What is the minimum superheat recommended by EEV manufacturers? 5°F superheat. Study with Quizlet and memorize flashcards containing terms like How do you determine the evaporator superheat of a refrigeration system?, How is the factory setting of the superhealt adjust- ment determined on a Sporlan expansion valve?, What are two ways the ...6. Select the Sporlan Selective Thermostatic Charge. Select the charge according to the design evaporating tem-perature from the Table on page 3. Refer to Bulletin 10-9 for a complete discussion of the available Sporlan Selective Thermostatic Charges. Selection Example – Refrigerant 22 Application: medium temperature refrigerationDavid explains the installation of a TXV.Thanks for watching!- [email protected] me on Facebook: https://www.facebook.com/David-Jones-AC-1010...Unlike other Sporlan Thermostatic Expansion Valves, the Type HX is further defined by its part number. Parker H Sporlan HX Application ZX200 ZX R410A - Heat Pump (Outdoor unit) KX200 KX R410A- Traditional A/C (similar to ZGA) Model Option Feature E ODF C Check Valve A Adjustable Item Number = 044237-32 044 2 3 7 - 32 Series Model …The thermostatic expansion valve (TEV) controls the flow of liquid refrigerant entering the direct expansion (DX) evaporator by ... contact Sporlan Division of Parker. TEV CAPACITY RATINGS FOR REFRIGERANTS: 22, 134a, 401A, 402A, 404A, 407C, 408A, 409A, 410A, 422D, 507 7. Valve Nomenclature / Ordering Instructions6. Select the Sporlan Selective Thermostatic Charge. Select the charge according to the design evaporating tem-perature from the Table on page 3. Refer to Bulletin 10-9 for a complete discussion of the available Sporlan Selective Thermostatic Charges. Selection Example – Refrigerant 22 Application: medium temperature refrigeration

Parker Sporlan Type EBS thermostatic expansion valves are designed for use on Air Conditioning and Refrigeration units. They regulate refrigerant flow by maintaining a nearly constant superheat at the evaporator outlet.<br/><br/>

"Why are you adjusting that Thermal Expansion Valve?" To answer this question we first need to look at the main functions of the TXV. The TXV is designed to keep the evaporator as full of saturated refrigerant as possible while at the same time protecting the compressor from slugging or overheating. This is accomplished by maintaining a set ...Unfortunately it is not compatible with other types of valves from sporlan. You'll need to replace it with the specific type of body. Sporlans outside of Q bodies can only have their powerheads replaced. Danfoss can have their cores replaced. If you got a bad "core" on a sporlan that isn't a Q body, then you gotta replace the whole thing.The Sporlan Type SR balanced port thermostatic expansion valve has a brass bar stock body. The SR valve has standard or extended ODF Solder connections in a variety of common sizes. The valve is equipped with a serviceable inlet strainer, allowing the strainer to be cleaned or replaced without removing the valve from the system.Recommended. Sporlan Type W thermostatic expansion valves are designed for use on Air Conditioning and Refrigeration units. They regulate refrigerant flow by maintaining a nearly constant superheat at the evaporator outlet. This valve has nominal capacities of 135.Expansion Valve Adjustment Each Sporlan TEV is thoroughly tested and set at the factory before shipment. How do you adjust a thermostatic expansion valve? The TXV cannot be adjusted open or closed, it is a modulating valve. Turning the adjustment stem clockwise will only increase spring pressure causing a higher superheat.The thermostatic expansion valve (TEV or TXV) is erroneously considered by some to be a mysterious and complex device. ... High superheat adjustment. Remedy - Turn the adjusting stem counterclockwise until the correct superheat is indicated. ... Excerpted and reprinted from Sporlan Bulletin 10-11, "Thermostatic Expansion Valves: Installation ...Svend Jepsen shows you how to adjust the superheat setting on four different Danfoss thermostatic expansion valves, where you use the 4 Kelvin factory settin...They are adjusted manually; the Sporlan ADRSE-2, from the video below, is adjusted using an Allen key. Adjusting the valve inwards will allow more hot gas to flow through the valve, and backing out the adjustment will allow less hot gas to flow through the valve. When setting up the valve, you may need to simulate a low-load condition.Sporlan has a new and improved website! The new Sporlan.com website provides easy access to literature and products as well as our HVACR online learning and training. Find everything from product information to webinars and everything in between. We provide the HVACR information you need to be successful. See the website!A thermostatic expansion valve (TXV) (see Figure 1) is a refrigeration and air conditioning throttling device that controls the amount of refrigerant liquid injected into a system's evaporator—based on the evaporator outlet temperature and pressure—called the superheat. Figure 2 shows the different phases and pressures the refrigerant ...

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When adjusting the valve, make no more than one turn of the stem at a time and pay close attention to the change in superheat to avoid overshooting the desired setting. Furthermore, how does one go about adjusting a thermostatic expansion valve? Find the adjustment needle on the thermostatic expansion valve and turn it to the desired setting.Sporlan largely solved this particular issue in the 40s when they brought the “balanced port” valve to market. While the technology is nothing new, it has been improved over time. Balanced port TXVs can vary in design, but they solve this problem by allowing the inlet pressure to affect the top and bottom of the needle (orifice) equally.Adjustment. Now, you are set to start the adjustment process. If the superheat level is below the recommended range, you would need to increase the superheat on TXV. Locate the adjustment stem on the TXV; it is usually a screw-like structure. Use a screwdriver to turn the adjustment stem clockwise, which will increase the superheat.10__EBQE-A-ZCP180 3VX4X2 ODF 5' __10. Sporlan Type BQ thermostatic expansion valves are for use on Air Conditioning & Refrigeration units. They have a replaceable cartridge design. They regulate refrigerant flow by maintaining a nearly constant superheat at the evaporator outlet.7__GJE-1-1/2-C 3X4 SAE 5' __7. Sporlan Type G thermostatic expansion valves are designed for use on Air Conditioning and Refrigeration units. They regulate refrigerant flow by maintaining a nearly constant superheat at the evaporator outlet.<br/><br/>.Sporlan 180918 - KT-85-ZGA TXV Powerhead Element w/ 5' Capillary- Sporlan KT-85-ZGA TXV Powerhead Element Specifications Thermostatic Charge: GA Application: Air Conditioning Capillary Length (inch): 5' Refrigerant Type: R-410A Element Type: 85 Free shipping on orders over $99 Your Zip: 23917 ... Welcome to Parker's Sporlan Division. Parker Sporlan is solving HVAC and refrigeration industry challenges by providing innovative solutions which aid technicians in diagnosing and repairing systems quickly and accurately. Sporlan also offers a range of components and systems that increase energy efficiency and reduce emissions, helping to ... Since this is a package unit, I'd like to adjust the TXV to bring that down and help with the low pressure. Am I correct in. Refrigeration-Engineer.com forums > REFRIGERATION DIVISIONS > Air ... View Full Version : Adjusting Sporlan TXV for SH. Ryan@PMS. 02-03-2009, 10:15 PM. ….

For peak performance, it is important to select a Sporlan Thermostatic Expansion Valve (TEV) with correct capacity, selective charge, external or internal equalizer, etc. See Bulletins 10-9 and 10-10 for complete application information. Equally important is the proper installation, which can determine the success or failure of the entire system. select a Sporlan Thermostatic Expansion Valve (TEV) with correct capacity, selective charge, external or internal equalizer, etc. See Bulletins 10-9 and 10-10 for complete application information. Equally important is the proper installation, which can determine the success or failure of the entire system. n Valve Location through connections and external adjustment. The thermostatic element is not replaceable on valves manufactured prior to 1994. Current models use a re-placeable No. 43 element. Typical applications: small capacity air conditioning and refrigeration applica-tions where an external adjustment is desired. Not available for R-410A. R The Sporlan Type R-ER-SR, and RC balance ported thermostatic expansion valves have a brass bar stock body. The R valve has flare connections, the ER has extended ODF connection and SR has extended ODF connections with forged inlet and replaceable strainer. Type RC valve contains an internal check valve.Are you thinking about becoming a public adjuster? If so, you’ll need a specific skill set to succeed in this line of work as well as the right education. Keep reading to learn abo...To completely identify a SPORLAN thermostatic expansion valve the following information is required: To completely identify a SPORLAN thermostatic element the following information is required: 1.Type of valve (body style) 2.Refrigerant 3.External equalizer 4.Capacity in tons of refrigeration or port size 5.Type of thermostatic charge Adjust and optimize superheat in less than 15 minutes. TXV Superheat Tuner is now part of Ref Tools, the essential, all-in-one mobile app for air conditioning and refrigeration technicians. Ref Tools gives you access to the tools, guidance, support, and information you need—on the job and in the field. When the temperature and pressure of the bulb’s charge rises, the powerhead provides the force to open the TXV. When the temperature and pressure of the bulb charge decreases, the TXV closes. As you can see, the sensing bulb determines if a TXV opens or closes. The powerhead is simply there to relay the pressure from the bulb and provide the ... Adjusting a sporlan txv, Adjust and optimize superheat in less than 15 minutes. TXV Superheat Tuner is now part of Ref Tools, the essential, all-in-one mobile app for air conditioning and refrigeration technicians. Ref Tools gives you access to the tools, guidance, support, and information you need—on the job and in the field. , Setting Subcooling on a TXV System. About this HVAC Tip. Troubleshooting, Heat Pump, AC ; In this video, I determine how to use the subcooling charge curve to adjust the charge properly. Related HVAC Tips. OL is Not an Ohm Reading. Maintenance, Troubleshooting, Installation, AC; Leaving a Voicemail for Tech Support. Maintenance, Business ..., Sporlan 100446 - BFVE-A-C 3/8" x 1/2" SAE Thermal Expansion Valve w/ 30" Capillary (1.5 Ton)- Specifications: REFRIGERANT TYPE: R-22 APPLICATION: Commercial Refrigeration THERMOSTATIC CHARGE: C NOMINAL CAPACITY (TON): A INLET CONNECTION: 3/8" SAE OUTLET CONNECTION: 1/2" SAE EQUALIZER METHOD: Externally Equalized CAPILLARY LENGTH (INCH): 30 ..., Measure the evaporating pressure as close to the evaporator as possible. • Work out evaporating temp (ET) from a comparator. • Calculate the superheat as follows: superheat = T - ET. Adjust the TEV if necessary: • If the superheat is less than 5K the valve needs closing down. If the superheat is greater than 5K the valve needs opening up., Form 10-546 - Parker Sporlan Q Series Case Options: S-145 - Sporlan Q Series Workstation: SD-14 - Sporlan Thermostatic Expansion Valves Installation, Field Service, and Assembly: SD-240 - Sporlan Q and BQ TEVs - Installation Instructions: SD-289 - Sporlan TEV Installation and Instructions: Sporlan Replacement Parts - Bulletin 122 (May 2019), Parker Expansion Valve - Quick Reference Parker Hannifin orporation, roadview, IL USA 800-742-2681 P-109-0712 Orifice R - 12 / R - 134A R - 404A / R - 507 R - 22 / R - 407 R - 410A, Sporlan type O valve is a brass bar body, externally adjustable valve with ODF solder connections. The thermostatic element is replaceable and the inlet connection has a permanent 12 mesh strainer. This valve type features a balanced port construction and is designed for both air conditioning and refrigeration applications., Visual Table of Contents Page 2 / Catalog E-1, Thermostatic & Automatic Expansion Valves SC(E) Series TEV page 8 Applications: Supermarket Cases, Walk-in Freezers, Ice Machines EBSE Series TEV page 14 Applications:, Desuperheating Thermostatic Expansion Valve - When the desuperheating TEV is used in conjunction with the bypass valve, piping the two valves to get good mixing before reaching the TEV bulb location is vital. This can be accom-plished several ways but the simplest is to tee the liquid-vapor mixture from the TEV and the hot gas from the DBV, In this video I swap out a power head on a TXV without recovering the refrigerant. #airconditioner #hvaclife #hvactechnician #hvacguy #acrepair #hvac #hvacin..., adjusting stem seal have been found by Sporlan to be compat-ible with these hydrocarbons used with common refrigeration oils. Application Sporlan thermostatic expansion valves may be applied on systems with R-170, R-290 or R-600a as the working fluid, with the design and selection criteria being the same as those for conventional refrigerants., These valves have a removable 100 mesh strainer as a standard feature. These valves are designed for small refrigeration systems such as refrigerated cases, coolers, and freezers where space is limited and an external adjustment is desired. Overall height: 3.76" Element size: 43; Capillary length: 30" Connection: ODF inlet x ODF outlet, Welcome to Parker's Sporlan Division. Parker Sporlan is solving HVAC and refrigeration industry challenges by providing innovative solutions which aid technicians in diagnosing and repairing systems quickly and accurately. Sporlan also offers a range of components and systems that increase energy efficiency and reduce emissions, helping to ..., The Type HX Thermostatic Expansion Valve is designed for use on residential air conditioning and heat pump systems. The valve is available with an integral check valve to bypass refrigerant flow around the expansion device in reverse direction. Sporlan HX and Parker H Valves share the same internal components and feature similar thermostatic ... , This Parker Sporlan webinar training module will discuss Thermostatic Expansion Valves (TEVs) as part of our HVAC Excellence presentation. Learn everything y..., Svend Jepsen shows you how to adjust the superheat setting on four different Danfoss thermostatic expansion valves, where you use the 4 Kelvin factory settin..., Sporlan 125428 - OZE-20-GA 7/8" x 1-3/8" ODF Thermal Expansion Valve w/ 60" Capillary (20 Ton)- Specifications: REFRIGERANT TYPE: R-410A APPLICATION: Air Conditioning THERMOSTATIC CHARGE: GA NOMINAL CAPACITY (TON): 20 INLET CONNECTION: 7/8" ODF OUTLET CONNECTION: 1-3/8" ODF EVAPORATOR EQUALIZER SIZE (INCH): 1/4" ODF EQUALIZER METHOD: Externally ..., 184000 - Cartridge service kit: (3) QCO, (5) QC1, (5) QC2, (5) QC3, (3) QC4, (3) QC5, (3) QC6, (1) 4mm allen wrench, (1) bottle oil, The Type HX Thermostatic Expansion Valve is designed for use on residential air conditioning and heat pump systems. With five available capacities, it provides superb superheat control in systems ranging from 1-1/2 to 8 tons. The balanced port enables superior control when the system experiences widely varying ambient conditions., Watch this video to find out about the Pass-Thru Adjustable Wrench Set from Crescent, which can be used as an adjustable wrench, a pipe wrench, and a socket wrench. Expert Advice O..., TXV Selector Tool: Emerson is pleased to announce the launch of the TXV Selection Tool. This online selection tool allows users to enter their HVACR system characteristics such as refrigerant type, temperatures, pressure drop and capacity, and then selects the best Emerson thermal expansion valves for the application., Bulletin 210-40-4 - Sporlan Field Conversion of the Thermostatic Expansion Valves with Replaceable Thermostatic Elements Bulletin 210-60 - Sporlan Thermostatic Expansion Valves Identification SD-14 - Sporlan Thermostatic Expansion Valves Installation, Field Service, and Assembly SD-289 - Sporlan TEV Installation and Instructions, The Sporlan Tech Check app provides a simple way to interface with the premier Sporlan S3C Case controller solution. The user will be able to view case parameters, process values, graph selected sensors, and allow temporary override of EEVs, EEPRs and solenoids. Contractors and technicians will be empowered to easily troubleshoot a case without ..., This category contains BF, EBF, and SBF type thermal expansion valves manufactured by Sporlan. We only ship within the United States. Your Zip: Enter a US zip code. HELP. MENU. CONTACT & SUPPORT. ... SBFV-AAA-C 3/8" x 1/2" ODF Thermal Expansion Valve w/ 30" Capillary (1/8 to 1/3 Ton), Sporlan TEV: 1. Determine the liquid temperature of the refrigerant entering the valve. The TEV capacity tables on pages 4 to 8 are based on a liquid temperature of 100°F for R-22, R-134a, R-401A, R-402A, R-404A, R-407C, R-408A, R-409A, R-410A, and R-507. For other liquid temperatures, apply the correction , This site requires JavaScript to be enabled., In this video you learn how to optimize superheat using the TXV Superheat Tuner tool—now available in Ref Tools. Providing you with a step-by-step guide, you..., One of the basic components selected when installing a walk-in cooler/freezer or any field-assembled refrigeration system is the metering device, typically the thermostatic expansion valve (TXV). The TXV needs to be selected to match the Btu capacity of the system's evaporator and compressor. Normally, these valves are rated in tons of refrigeration, so you need to remember that 1 ton of ..., #8 — Check the TEV Adjustment: The factory setting of a Sporlan TEV is close to center stem. Count the total number of turns from front seat to back seat, then front seat the adjustment stem 50% of the total turns counted. Turn the adjusting stem clockwise in increments of 1/2 to 1 full turn every 15 minutes until the correct superheat is, Problem. 16RQ. Step-by-step solution. Chapter 5, Problem 16RQ is solved. View this answer. View a sample solution. Step 1 of 2. Step 2 of 2. Back to top., adjusting stem seal have been found by Sporlan to be compat-ible with these hydrocarbons used with common refrigeration oils. Application Sporlan thermostatic expansion valves may be applied on systems with R-170, R-290 or R-600a as the working fluid, with the design and selection criteria being the same as those for conventional refrigerants., When adjusting both evaporator pressure regulating valves and thermostatic expansion valves, the follow-ing procedure is recommended. With the thermostatic expansion valve at the Sporlan factory setting or at a manufacturer's predetermined set point, and under the actual minimum load condi-tion, the evaporator pressure regulating valve should, Aug 31, 2017 · TXV Selector Tool Emerson is pleased to announce the launch of the TXV Selection Tool. This online selection tool allows users to enter their HVACR system characteristics such as refrigerant type, temperatures, pressure drop and capacity, and then selects the best Emerson thermal expansion valves for the application.