Check Valve
Coil
Coil Style
Flange Type
Motor/IO Module
Plated
Port Size
Range
Reduced Capacity
Set Point
Strainer
Valve Material
Parker A4AJS Electronic Pilot Operated w/ Electric Shut-Off Inlet Regulators
The A4A outlet family of regulators are compact, heavy duty, pilot operated, and have remarkable functionality. The regulator will gradually close when downstream pressure begins to rise above the setting and will gradually open when pressure begins to fall below the setting. The regulator cannot maintain set-for pressure if uncontrolled branch pipe lines feed into the main pipeline downstream of the regulator. The valve's purpose is to modulate flow of refrigerant gas or liquid to maintain constant downstream pressure as set-for, despite load fluctuations.
Part Kits
| | 20mm (3/4") | 25mm (1 ") | ||||||||
| Item No. | Description | Kit No. | Qty | Kit No. | Qty | |||||
| 1 | Seal Cap | Only Avail. With Kit | 1 | Only Avail with Kit | 1 | |||||
| 2 | Seal Cap Gasket | Only Avail with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 1-2 | Cap Kit, Seal | 202110 | 1 | 202110 | 1 | |||||
| 3 | Nut, Packing | Only Avail. With Kit | 1 | Only Avail. with Kit | 1 | |||||
| 4 | Packing, Stem | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 5 | Washer, Flat | Only Avail. with Kit | 1 | Only Avail. With Kit | 1 | |||||
| 3-5 | Packing Kit, Stem | 202100 | 1 | 202100 | 1 | |||||
| 6 | Stem, Adjusting | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 4-6 | Stem Kit, Adjusting | 202120 | 1 | 202120 | 1 | |||||
| 12 | Plate, Spring, Upper | Only Avail with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 13 | Spring, Comp. | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 14 | Plate, Spring, Lower | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 15 | Follower, Diaphragm | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 3-5, 6, 12-15 | Spring/ Stem Kit | Range A/V | 202006 | 1 | 202006 | 1 | ||||
| Range D | 202007 | 1 | 202007 | 1 | ||||||
| 8 | Bonnet | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 11 | Screw, Hx. Hd. | Only Avail. with Kit | 8 | Only Avail. with Kit | 8 | |||||
| 16 | Bonnet Gasket | Only Avail. With Kit | 1 | Only Avail. With Kit | 1 | |||||
| 1-6, 8, 11-16 | Spring Kit with Bonnet | Range A/V | 202008 | 1 | 202008 | 1 | ||||
| Range D | 202009 | 1 | 202009 | 1 | ||||||
| 12-14, 16 | Spring Kit, Less Bonnet | Range A/V | 202481 | 1 | 202481 | 1 | ||||
| Range D | 202482 | 1 | 202482 | 1 | ||||||
| 17 | Diaphragm | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 19 | Gasket | Only Avail. with Kit | I | Only Avail. with Kit | 1 | |||||
| 16,17, 19 | Diaphragm Kit | Range A/V | 200770 | 1 | 200770 | 1 | ||||
| 17 | Diaphragms | Range D | Only Avail. with Kit | 2 | Only Avail, with Kit | 2 | ||||
| 16,17, 19 | Diaphragm Kit | Range D | 200771 | 1 | 200771 | 1 | ||||
| 16-19 | VC Vacuum Cartridge | 202004 | 1 | 202004 | 1 | |||||
| 16-19 | Pilot Seat/ Diaphragm Kit (Not A4AO) | Range A | 202000 | 1 | 202000 | 1 | ||||
| Range V | 202004 | 1 | 202004 | 1 | ||||||
| Range D | 202002 | 1 | 202002 | 1 | ||||||
| 27 | Plug Pkg, 1/4" NPT | 202552 | 5 | 202552 | 5 | |||||
| 28 | Adapter | Only Avail. With Kit | 1 | Only Avail. With Kit | 1 | |||||
| 29 | Gasket | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 19,28, 29 | Adapter Kit | 200703 | 1 | 200703 | 1 | |||||
| 30 | Piston/Stem Assembly | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 29,30 | Piston Kit | 200760 | 1 | 200760 | 1 | |||||
| 32 | Valve Body | Not Available | | Not Available | | |||||
| 34 | Spring, Comp. | Only Avail. with Kit | 1 | Only Avail. With Kit | 1 | |||||
| 35 | Washer, Flat | Only Avail. with Kit | 1 | Only Avail. With Kit | 1 | |||||
| 36 | Wiper, Dirt | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 37 | "O" Ring | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 34-37 | Spring Kit, (A4A) Closing (A4AK) | 202300 | 1 | 202300 | 1 | |||||
| 202298 | 1 | 202298 | 1 | |||||||
| 33 | Plug/Stem Assembly | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 40 | Washer, Flat | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 41 | Packing, Stem | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 42 | Nut, Packing | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | |||||
| 33, 34-37, 40-42 | Full Cap. Plug Kit, Modul. | A4A | 202021 | 1 | 202022 | 1 | ||||
| A4AK | 202037 | 1 | 202038 | 1 | ||||||
| 33, 34-37, 40-42 | 50% Cap. Plug Kit, Modul. | A4A | 202029 | 1 | (*) | | ||||
| A4AK | 202036 | 1 | (*) | | ||||||
| 33, 34-37, 40-42 | 35% Cap. Plug Kit, Modul. | A4A | Not Available | | Not Available | | ||||
| A4AK | Not Available | | Not Available | | ||||||
| 33, 34-37, 40-42 | 17% Cap. Plug Kit, Modul. | (A4A) | 202030 | 1 | (*) | | ||||
| (A4AK) | 202030 | 1 | (*) | | ||||||
| | 32mm (1-1/4") | 40mm (1-5/8") | 50mm (2") | 65mm (2-1/2") | 75mm (3") | 100mm (4") | ||||||
| Item No. | Kit No. | Qty | Kit No. | Qty | Kit No. | Qty | Kit No. | Qty | Kit No. | Qty | Kit No. | Qty |
| 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 2 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 1-2 | 202110 | 1 | 202110 | 1 | 202110 | 1 | 202110 | 1 | 202110 | 1 | 202110 | 1 |
| 3 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail, with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 4 | Only Avail, with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 5 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 3-5 | 202100 | 1 | 202100 | 1 | 202100 | 1 | 202100 | 1 | 202100 | 1 | 202100 | 1 |
| 6 | Only Avail. with Kit | 1 | Only Avail with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 4-6 | 202120 | 1 | 202120 | 1 | 202120 | 1 | 202120 | 1 | 202120 | 1 | 202120 | 1 |
| 12 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail, with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 13 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 14 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | I | Only Avail. with Kit | 1 |
| 15 | Only Avail. with Kit | 1 | Only Avail, with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 3-5, 6, 12-15 | 202006 | 1 | 202006 | 1 | 202006 | 1 | 202006 | 1 | 202006 | 1 | 202006 | 1 |
| 202007 | 1 | 202007 | 1 | 202007 | 1 | 202007 | 1 | 202007 | 1 | 202007 | 1 | |
| 8 | Only Avail, with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail, with Kit | 1 | Only Avail. with Kit | 1 |
| 11 | Only Avail. with Kit | 8 | Only Avail. with Kit | 8 | Only Avail. with Kit | 8 | Only Avail. with Kit | 8 | Only Avail. with Kit | 8 | Only Avail. with Kit | 8 |
| 16 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 1-6, 8, 11-16 | 202008 | 1 | 202008 | 1 | 202008 | 1 | 202008 | 1 | 202008 | 1 | 202008 | 1 |
| 202009 | 1 | 202009 | 1 | 202009 | 1 | 202009 | 1 | 202009 | 1 | 202009 | 1 | |
| 12-14, 16 | 202481 | 1 | 202481 | 1 | 202481 | 1 | 202481. | 1 | 202481 | 1 | 202481 | 1 |
| 202482 | 1 | 202482 | 1 | 202482 | 1 | 202482 | 1 | 202482 | 1 | 202482 | 1 | |
| 17 | Only Avail with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail, with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 19 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail, with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 16,17, 19 | 200770 | 1 | 200770 | 1 | 200770 | 1 | 200770 | 1 | 200770 | 1 | 200770 | 1 |
| 17 | Only Avail with Kit | 2 | Only Avail with Kit | 2 | Only Avail. with Kit | 2 | Only Avail. with Kit | 2 | Only Avail. with Kit | 2 | Only Avail. with Kit | 2 |
| 16,17, 19 | 200771 | 1 | 200771 | 1 | 200771 | 1 | 200771 | 1 | 200771 | 1 | 200771 | 1 |
| 16-19 | 202004 | 1 | 202004 | 1 | 202004 | 1 | 202004 | 1 | 202004 | 1 | 202004 | 1 |
| 16-19 | 202000 | 1 | 202000 | 1 | 202000 | 1 | 202001 | 1 | 202001 | 1 | 202001 | 1 |
| 202004 | 1 | 202004 | 1 | 202004 | 1 | 202004 | 1 | 202004 | 1 | 202004 | 1 | |
| 202002 | 1 | 202002 | 1 | 202002 | 1 | 202003 | 1 | 202003 | 1 | 202003 | 1 | |
| 27 | 202552 | 5 | 202552 | 5 | 202552 | 5 | 202552 | 5 | 202552 | 5 | 202552 | 5 |
| 28 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 29 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 19.28,29 | 200700 | 1 | 200725 | 1 | 200725 | 1 | 200685 | 1 | 200713 | 1 | 200716 | 1 |
| 30 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 29,30 | 200767 | 1 | 200389 | 1 | 200389 | 1 | 200391 | 1 | 200393 | 1 | 200227 | 1 |
| 32 | Not Available | | Not Available | | Not Available | | Not Available | | Not Available | | Not7vailable | |
| 34 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail, with Kit | 1 | Only Avail. with Kit | 1 | Only Avail, with Kit | 1 | Only Avail. with Kit | 1 |
| 35 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Onlv Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 |
| 36 | Only Avail. with Kit | 1 | Only Avail. with Kit | 1 | Only Avail. with Kit | |||||||
| Sku | Coil | Coil Style | Flange Type | Flange Connection | Port Size | Strainer | Valve Material | Price | Qty | Add To Cart | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1-5/8 A4AJS 2SW 120G 4-20MA MO DULE | A405A400A7S50B3ANXSN See Details |
120/60 | Leaded, Green LED Pilot Light | SW | 2 in | 40mm (1 5/8 in) | No Strainer | Standard Valve |
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| 1-5/8 A4AJS 2SW 120G ST | A405A400A7S50B3XYXSN See Details |
120/60 | Leaded, Green LED Pilot Light | SW | 2 in | 40mm (1 5/8 in) | w/ Strainer | Standard Valve |
|
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| 1-5/8 A4AJS 2WN 120G 4-20MA | A405A400A7W50B3AYXSN See Details |
120/60 | Leaded, Green LED Pilot Light | WN | 2 in | 40mm (1 5/8 in) | w/ Strainer | Standard Valve |
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| 2 A4AJS 2SW 120 4-20MA MODLUE | A405A500A7S50B1ANXSN See Details |
120/60 | Leaded, Standard | SW | 2 in | 50mm (2 in) | No Strainer | Standard Valve |
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| 2 A4AJS 2SW 120G 4-20MA MODULE | A405A500A7S50B3ANXSN See Details |
120/60 | Leaded, Green LED Pilot Light | SW | 2 in | 50mm (2 in) | No Strainer | Standard Valve |
|
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| 2 A4AJS 2SW 120G 4-20MA MODULE ST | A405A500A7S50B3AYXSN See Details |
120/60 | Leaded, Green LED Pilot Light | SW | 2 in | 50mm (2 in) | w/ Strainer | Standard Valve |
|
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| 2 A4AJS 2SW 4-20MA MODULE ST | A405A500A7S50X0AYXSN See Details |
No Coil, AC | No Coil Style | SW | 2 in | 50mm (2 in) | w/ Strainer | Standard Valve |
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| 2 A4AJS 2SW ST | A405A500A7S50X0XYXSN See Details |
No Coil, AC | No Coil Style | SW | 2 in | 50mm (2 in) | w/ Strainer | Standard Valve |
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