Check Valve
Coil
Coil Style
- DIN, Green LED Pilot Light (4)
- DIN, Red LED Pilot Light (2)
- Leaded, Green LED Pilot Light (4)
- Leaded, Red LED Pilot Light (1)
- Leaded, Standard (9)
Flange Type
Flange Connection
Motor/IO Module
Plated
Port Size
- 20mm (3/4 in) (2)
- 32mm (1 1/4 in) (4)
- 40mm (1 5/8 in) (6)
- 50mm (2 in) (5)
- 65mm (2 1/2 in) (2)
- 100mm (4 in) (1)
Range
Reduced Capacity
Set Point
Valve Material
Parker A4ABS Electric Wide Opening & 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 Style | Flange Type | Flange Connection | Port Size | Range | Reduced Capacity | Set Point | Strainer | Valve Material | Price | Qty | Add To Cart | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/4 A4ABS RA 1SW 120 ST | A402A200A7S25B1XYXSN See Details |
Leaded, Standard | SW | 1 in | 20mm (3/4 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 3/4 A4ABS RA 120 ST | A402A200A7X00B1XYXSN See Details |
Leaded, Standard | No Flange | None | 20mm (3/4 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-1/4 A4ABS RA 1-1/4SW 120 ST | A402A320A7S32B1XYXSN See Details |
Leaded, Standard | SW | 1 1/4 in | 32mm (1 1/4 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
|
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| 1-1/4 A4ABS RA 1-1/4SW 120R ST | A402A320A7S32B2XYXSN See Details |
Leaded, Red LED Pilot Light | SW | 1 1/4 in | 32mm (1 1/4 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
|
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| 1-1/4 A4ABS RA 1-1/2SW 120G QD ST | A402A320A7S38B6XYXSN See Details |
DIN, Green LED Pilot Light | SW | 1 1/2 in | 32mm (1 1/4 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
|
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| 1-1/4 A4ABS RA 120 ST | A402A320A7X00B1XYXSN See Details |
Leaded, Standard | No Flange | None | 32mm (1 1/4 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-5/8 A4ABS RA 1-1/2SW 120 ST | A402A400A7S38B1XYXSN See Details |
Leaded, Standard | SW | 1 1/2 in | 40mm (1 5/8 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-5/8 A4ABS RA 1-1/2SW 120G ST | A402A400A7S38B3XYXSN See Details |
Leaded, Green LED Pilot Light | SW | 1 1/2 in | 40mm (1 5/8 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
|
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| 1-5/8 A4ABS RA 2SW 120 ST | A402A400A7S50B1XYXSN See Details |
Leaded, Standard | SW | 2 in | 40mm (1 5/8 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
|
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| 1-5/8 A4ABS RA 2SW 120G ST | A402A400A7S50B3XYXSN See Details |
Leaded, Green LED Pilot Light | SW | 2 in | 40mm (1 5/8 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-5/8 A4ABS RA 2SW 120G QD ST | A402A400A7S50B6XYXSN See Details |
DIN, Green LED Pilot Light | SW | 2 in | 40mm (1 5/8 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-5/8 A4ABS RA 120G ST | A402A400A7X00B3XYXSN See Details |
Leaded, Green LED Pilot Light | No Flange | None | 40mm (1 5/8 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 2 A4ABS RA 2SW 120 ST | A402A500A7S50B1XYXSN See Details |
Leaded, Standard | SW | 2 in | 50mm (2 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 2 A4ABS RA 2SW 120G ST | A402A500A7S50B3XYXSN See Details |
Leaded, Green LED Pilot Light | SW | 2 in | 50mm (2 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 2 A4ABS RA 2SW 120R QD ST | A402A500A7S50B5XYXSN See Details |
DIN, Red LED Pilot Light | SW | 2 in | 50mm (2 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 2 A4ABS RA 2SW 120G QD ST | A402A500A7S50B6XYXSN See Details |
DIN, Green LED Pilot Light | SW | 2 in | 50mm (2 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 2 A4ABS RA 2SW 24/DC ST | A402A500A7S50R1XYXSN See Details |
Leaded, Standard | SW | 2 in | 50mm (2 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 2-1/2 A4ABS RA 2-1/2SW 120G QD ST | A402A650A7S65B6XYXSN See Details |
DIN, Green LED Pilot Light | SW | 2 1/2 in | 65mm (2 1/2 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
|
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| 2-1/2 A4ABS RA 120 ST | A402A650A7X00B1XYXSN See Details |
Leaded, Standard | No Flange | None | 65mm (2 1/2 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 4 A4ABS RA 4SW 120R QD ST | A402AA00A7SP0B5XYXSN See Details |
DIN, Red LED Pilot Light | SW | 4 in | 100mm (4 in) | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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