The items described in this document are hereby offered for sale by parker hannifin corporation, its subsidiaries or its authorized distributors. An expansion valve should be adjusted if it needs adjusting. Learn online with our specialist training, wholesaler training, zoomlock training and chillskills webinars. Take the guesswork out of your superheat adjustments. January 1998 bulletin 1010 thermostatic expansion valves. Understanding and preventing superheat hunting in tevs. Fitters notes thermostatic expansion valves contents page. Parker hannifin corporation, broadview, il usa 8007422681. The sporlan type er balanced port thermostatic expansion valve has a brass bar stock body. Thermostatic expansion valves parker hhc series parker hhc series thermostatic expansion valves are designed for use on air conditioning and heat pump systems.
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 systems evaporatorbased on the evaporator outlet temperature and pressurecalled the superheat. Kit identification confirm the txv kit type that is. A thermostatic expansion valve is built up around a thermostatic element 1 separated from the valve body by a diaphragm. Making modern living possible technical brochure thermostatic expansion valve type tge. See bulletins 109 and 1010 for complete application information. Dec 06, 2000 earlier we talked about the proper way to take a superheat reading. If you would like to receive pricing andor paper copies of literature, please contact your sales office or contact sporlan division by phone at. The thermostatic expansion valve tev controls the flow of liquid refrigerant. Number of turns n 11 h 412, e 9 small o 9 large o 15 reprinted adapted from parker sporlan bulletin 5220 0320. 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.
Thermostatic expansion valves parker hannifin corporation. The tev controls the difference between the actual temperature and the saturation temperature. The drawing at the bottom right is a schematic of a heat pump employing a single externally equalized bidirectional thermostatic expansion valve control ling superheat in both the cooling and heating modes. Change and adjust an expansion valve on a walk in freezer. It offers features such as select indoor andor outdoor thermostatic rainbow charges, bleeds, and a variety of connection styles for the inlet, outlet and external equalizer. Cofounder and vp of service at kalos services, bryan has been involved in hvac training for over years. Equally important is the proper installation, which can deter. Some of the original parker txv part numbers still exist but in some cases the parker txv could not be substituted to the emerson txv so new part numbers were created for the emerson txvs that were not a direct replacement for the parker txvs. Thermostatic expansion valve sporlan type s parker na. Our process control valves are versatile for various. Adjust and optimize superheat in less than 15 minutes. Sep 18, 2018 never force the adjustment screw too far, it should require minimal force to turn other than possibly initially to unstick the screw.
Thermostatic expansion valves parker hhc series parker na. Txv superheat adjustment if these issues cannot be corrected by any other way, adjust the valves superheat. Adjusting a txv tev is an advanced skill for a technician who has a good grasp on their readings and the forces at play. Identifying sporlan thermostatic expansion valves to. Thermostatic and automatic expansion valves catalog e1, october 2007. The symptoms of a restricted txv 20170109 achrnews. Expansion valves block type expansion valves continued tech tip.
Thermostatic expansion valve selection chart forheatcraft products tm. Accessory kit installation manual johnson controls unitary products 5020042uaia0315. Parker ebse series thermostatic expansion valve is a brass bar body valve and features a balance port construction and extended odf connections. Identifying sporlan thermostatic expansion valves bulletin 122 page 15 for applications with an external equalizer use kit number kt1b. Nov 07, 2017 in this video we take a look at how the thermostatic expansion valve or txv works in a hvac refrigeration system and the basic working principles that allow it to meter the flow of refrigerant. The er valve has odf connections in a variety of commons sizes, and has an optional inlet strainer available. Count the total number of turns front seat to back seat, then front seat. All selections are based on condensing pressures of 175 psig r22, 200 psig r404a and r507, and 10 degree liquid subcooling. It is suited for both refrigeration and air conditioning applications. To the extent that parker or its subsidiaries or authorized distributors provide component or system options based upon data or specifications provided by the user. Avoiding txv trauma this website requires certain cookies to work. This overview walks you through everything you need to know about safely and accurately adjusting the superheat on danfoss tr6. When adjusting the superheat as seen in figure 5, verify the rate of change per turn of the superheat spindle for the specific txv. I adjust an expansion valve on a walk in freezer allied refrigeration 4408235720 cleveland, ohio.
H series parker txv parker txv parker expansion valves. B17091 parker hannifin corporation txv kit johnstone. Equally important is the proper installation, which can determine the. Automatic expansion valves parker a series parker na. It is the spring pressure that can be adjusted on some valves, but why and.
The kit consists of a bolton thermal expansion valve txv, 2. Tev increases refrigerant flow until superheat returns to the valves setting. Manufacturers have been successfully applying parker sporlan thermostatic expansion valves on heat pump applications for many years. Parker hannifin thermal expansion valves txvs are available in a variety of heat pumps, air conditioning, and refrigeration applications. A capillary tube connects the element to a bulb 2 and a valve body with valve seat 3 and a spring 4.
They help to facilitate the change of higher pressure of liquid refrigerant in the condensing unit to lower pressure gas refrigerant in the evaporator. Johnstone supply is a leading wholesale distributor for multiple leading brands of hvacr equipment, parts and supplies available and instock at local branches. In this blog we discuss the different methods of installing thermostatic expansion valves on heat pump systems. Table 1txv kit contents part name identifier in figure callout quantity thermostatic expansion valve assembly a1 equalizer adapter b1 bulb clamps c2 straight flare d1 swivel flare or male flare e1 installation instructions 1. The subcool control provides liquid temperature and superheat pressuretemperature control for most common refrigerants. Catalog hy142500us check valves alpha series c5v direct. Parker valves can also be adjusted at the operating point, indicated above.
Industrial and mobile hydraulic proportional valves enable a precise directional or flow control. Expansion valves are devices used to control the refrigerant flow in a refrigeration system. B bleed optional 20 bleed capacity s eg c c internal check valve e for externally equalized evaporator pressure drop 3 psi blank for internally equalized evaporator pressure drop parker hannifin thermal expansion valves txvs are available in a variety of heat pumps, air conditioning, and refrigeration applications. As an aside i downloaded, from a link provided by you, on another thread a guide to danfoss txvs. Most refrigeration equipment breakdowns are repeat problems to some degree. B bleed optional 20 bleed capacity s eg c c internal check valve e for externally equalized evaporator pressure drop 3 psi blank for internally equalized evaporator pressure drop adjustment.
The following procedure should be used when selecting a sporlan tev. The truth is that twothirds of txvs returned to danfoss show no signs of failure. They can be used in hot gas bypass, expansion, or freeze protection applications. This offer and its acceptance are governed by the provisions stated in the detailed offer of sale elsewhere in this document or available at. A nicked or bleed valve type expansion valve is typically used in auxiliary systems to keep the refrigerant oil from trapping in the line behind the valve when it is off and the main system is on. Adjusting expansion valves for correct superheat can be frustrating by the book it seems simple enough. The balanced port construction makes this valve ideally suited for air conditioning and commercial. Thermostatic expansion valves txvs are often misdiagnosed as the root problem in poorly performing air conditioning and heat pump systems. Thermostatic expansion valve sporlan type er parker na. The ec series features extended odf solder connections, brass body, and balanced port design. When using a txv, manufacturers recommend also installing a hardstart capacitor in your heat pump or condenser. To ensure maximum txv performance, here are some tips on bulb mountinglocation, brazing, valve orientation, external equalizer use, superheat adjustment, and troubleshooting. This offer and its acceptance are governed by the provisions stated in the detailed offer of sale available at. Expansion valves block type expansion valves sorted in ascending by mounting type externally equalized externally equalized has a line with a fitting and nut, which are connected from the lower side of the expansion valves diaphram to a point on the low side hose between the evaporator and the compressor.
Goodman tx3n4 2 to 3 ton txv kit r 410a refrigerant. Thermostatic expansion valve parker ebs series parker na. The use of a nicked expansion valve depends on the design of the system. Conversely, the tev will decrease refrigerant flow when superheat. It offers features such as select indoor andor outdoor thermostatic rainbow charges, bleeds, and. Parker hae series and hcae series thermostatic expansion valves the h series balanced port valve is designed specifically for air conditioning and heat pumps used in both air or water source systems. Automatic expansion valves parker a series parker a series automatic expansion valves control downstream refrigerant pressure. The controller operates an electronic expansion valve to control superheat.
Our valves cover the complete performance range from standard up to maximum dynamics. If you would like to receive pricing andor paper copies of literature, please contact your sales office or contact sporlan division by phone at 636 2391111. Thermostatic expansion valve troubleshooting tips and tricks for txvs in air conditioning systems. The thermostatic expansion valve txv kit is used to increase the efficiency and ratings. Application nominal capacity r22 valve family service replacement style connections configuration port adjust able superheat internal hermetic check replaceable power element field assembled sae odf angle straight conventional balanced air. As we talked about in an earlier podcast, a txv is designed to.
Parker hannifin corporation, climate and industrial controls group, cleveland, oh. Page 2 bulletin 50010hccr the selections are based on load and operating conditions provided by heatcraft inc. Please note that, in an effort to combat spam, comments with hyperlinks will not be published. Here you can find a thermostatic expansion valve for nearly any hvac job. Parker sets the thermostatic expansion valve superheat at the static condition described above. To the extent that parker or its subsidiaries or authorized distributors provide component or system options based upon data or. Parker hannifin corporation refrigerating specialties rs broadview, il60155 catalog rs 717 thermostatic expansion valve capacities tons of refrigeration 6 thermostatic expansion. Parker offers refrigeration and air conditioning components for residential, commercial, industrial and mobile markets. Bryan started hvac school to be free training hvacr across many mediums, for techs, by techs. To answer this question we first need to look at the main functions of the txv. Sep 25, 2017 the sporlan superheat control is a standalone controller for refrigeration and air conditioning systems. The r22 nominal tonnage is used as a reference except as noted. The h series balanced port valve is designed specifically for air conditioning and heat pumps used in both air or water source systems.
Refer to bulletin 1011 for a complete discussion on installing and servicing thermostatic expansion valves. Designed to meet any challenge posed by air conditioning or refrigeration applications, parker offers a line of thermostatic expansion valves geared towards real world situations. There is also an option for a 15% bleed port, if required. The biggest problem is not txv adjustment it is the lack of understanding of superheat, subcooling and valve selection that are our biggest problems. Sporlan superheat kelvin controller installation youtube. Adjust assembly so liquid line aligns with hole in. Looking for parker thermostatic expansion valve, adjustable, r410a, 38 connector inlet in. This offer and its acceptance are governed by the provisions stated in the detailed offer of sale available at page 2 bulletin 1011. Select the txv to correspond with the tonnage of your air conditioner or heat pump, as well as to match the type of refrigerant your systems uses, r22 standard or r410a new alternative. Our outside technical sales force and application engineering team focuses on refrigeration system applications and. Easy online ordering and nextday delivery available with 247 expert product support. Never force the adjustment screw too far, it should require minimal force to turn other than possibly initially to unstick the screw. With johnstone, you can stay current on product and technology changes, in addition to programs that make it easy for the contractor. Parker txv parker expansion valves thermal expansion.
They both ensure refrigerant flow to the evaporator by maintaining proper superheat. Apr 30, 2005 to ensure maximum txv performance, here are some tips on bulb mountinglocation, brazing, valve orientation, external equalizer use, superheat adjustment, and troubleshooting. This txv kit is for r410a refrigerant and must always match the refrigerant type listed on the name plate of the outside unit. Each sporlan tev is thoroughly tested and set at the factory before shipment. Temperaturepressure card, and adjust the valve if necessary. Parkers proportional valves employ powerful valve technologies and are well suited for a variety of applications where accuracy and efficiency are a must. Parker hannifin has set the industry standard for the development and manufacture of leading edge. Since the minimum efficiency regulation changed to seer in january 2006, most oem systems now incorporate a thermostatic expansion valve txv style metering device as the standard for air conditioning systems. Parker thermostatic expansion valve, adjustable, r410a, 3. Before disassembling the tev, be sure the refrigerant pressure in the system has. Refrigerant 717 ammonia products refrigeration components. The sporlan subcool control is a simple means of controlling the electronic expansion valve eev on most liquid subcooling systems. Thermostatic expansion valves regulate the injection of liguid refrigerant into evaporators. This bulletin is to inform you that we have changed txv suppliers from parker to emerson.
Expansion valve cross reference thermostatic expansion valve cross reference fixed orifice replacement valves are similar but not necessarily identical to original valve. We are excited to continue our tradition of providing educational hvacr information and training to the industry. Injection is controlled by the refrigerant superheat. Therefore the valves are especially suitable for liquid injection in dry evaporators where the superheat at the evaporator outlet is. Txv superheat tuner, part of the danfoss coolapps toolbox, enables service technicians and hvac installers to optimize superheat with just one or two adjustments on most thermostatic expansion valves. Certain design characteristics may indicate or restrict application to certain system conditions, but the fundamental operation of. The sce series brass body expansion valve incorporates a 90 elbow inlet with. Rainbow charges are indicated in the chart below for medium temperature w. The factory setting of a sporlan tev is close to center stem. Avoiding txv trauma this website requires certain cookies to work and uses other cookies to help you have the best experience. Parker sporlans large diaphragm and durable welded element result in unmatched expansion valve quality and life. Parker expansion valve quick reference parker hannifin.
This overview walks you through everything you need to know about safely and accurately adjusting the superheat on danfoss tr6 thermostatic expansion valves. Equally important is the proper installation, which can determine the success or failure of the entire system. Parker expansion valve quick reference parker hannifin orporation, roadview, il usa 8007422681 p1090712 refrigerant designation valve models. This is similar to the manual closing of the txv, which exhibits symptoms of high superheat, low suction pressure and high condensing pressure. The typical txv comes factory set for 812 degrees of evaporator superheat, which in most cases should be fine. We provide refrigeration parts such as valves, filterdriers and pressure regulators for use in supermarkets, air conditioning units, cold storage. The sce series refrigeration right angle brass body expansion valve incorporates. This includes a comprehensive range of types and fitting configurations, assuring tights seals and quality processes throughout production. If the valve is adjustable, and if you determine that the superheat needs to be set for example, because the system is hunting, prepare for the adjustment by ensuring that you have operational head pressure and a proper flow of refrigerant to the tev, without flash gas.
Thermostatic and automatic expansion valves parker hannifin. For over 85 years parker sporlan has remained committed to strengthening the hvacr industry through education. Determine the liquid temperature of the refrigerant entering the valve the tev capacity tables on pages 5 to 9. Parker combines the best components to deliver customized subsystems, kits, manifolds and leakfree valueadded assemblies. Therefore the valves are especially suitable for liquid injection in dry evaporators where the superheat at the evaporator outlet is proportional to the evaporator load. Parker a series automatic expansion valves control downstream refrigerant pressure. The problem is that most service techs cant tell if it needs adjusting or not, so they end up causing problems instead of curing problems. The ex4ex8 are stepper motor driven valves that are optimized for the control of liquid or gaseous mass flow in refrigeration systems multifunction capability as expansion valve, hot gas bypass, suction gas throttling, head pressure, liquid line actuator and other applications systems. Thermostatic expansion valves sporlan online parker.
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