Check Valve
Coil
Coil Style
Flange Type
Flange Connection
Motor/IO Module
Plated
Port Size
- 20mm (3/4 in) (1)
- 25mm (1 in) (1)
- 32mm (1 1/4 in) (2)
- 40mm (1 5/8 in) (3)
- 50mm (2 in) (3)
- 65mm (2 1/2 in) (3)
- 75mm (3 in) (3)
- 100mm (4 in) (3)
Range
Set Point
Strainer
Valve Material
Parker A4AP Pneumatically Compensated 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 | Flange Type | Flange Connection | Port Size | Strainer | Valve Material | Price | Qty | Add To Cart | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 3/4 A4AP RA | A40BA200A7X00X0XNXSN See Details |
No Flange | None | 20mm (3/4 in) | No Strainer | Standard Valve |
|
|||
| 1 A4AP RA | A40BA250A7X00X0XNXSN See Details |
No Flange | None | 25mm (1 in) | No Strainer | Standard Valve |
|
|||
| 1-1/4 A4AP RA | A40BA320A7X00X0XNXSN See Details |
No Flange | None | 32mm (1 1/4 in) | No Strainer | Standard Valve |
|
|||
| 2 A4AP DN RA | A40BA500A7X00X0XNXPN See Details |
No Flange | None | 50mm (2 in) | No Strainer | Meets Pressure Equipment Directive (PED) |
|
|||
| 2 A4AP RA | A40BA500A7X00X0XNXSN See Details |
No Flange | None | 50mm (2 in) | No Strainer | Standard Valve |
|
|||
| 2-1/2 A4AP RA | A40BA650A7X00X0XNXSN See Details |
No Flange | None | 65mm (2 1/2 in) | No Strainer | Standard Valve |
|
|||
| 3 A4AP RA | A40BA750A7X00X0XNXSN See Details |
No Flange | None | 75mm (3 in) | No Strainer | Standard Valve |
|
|||
| 4 A4AP RA | A40BAA00A7X00X0XNXSN See Details |
No Flange | None | 100mm (4 in) | No Strainer | Standard Valve |
|
|||
| 1-1/4 A4AP RA 1-1/4SW ST | A40BA320A7S32X0XYXSN See Details |
SW | 1 1/4 in | 32mm (1 1/4 in) | w/ Strainer | Standard Valve |
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| 1-5/8 A4AP RA 1-1/2SW ST | A40BA400A7S38X0XYXSN See Details |
SW | 1 1/2 in | 40mm (1 5/8 in) | w/ Strainer | Standard Valve |
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| 1-5/8 A4AP DN RA 2SW | A40BA400A7S50X0XNXPN See Details |
SW | 2 in | 40mm (1 5/8 in) | No Strainer | Meets Pressure Equipment Directive (PED) |
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| 1-5/8 A4AP RA 2SW ST | A40BA400A7S50X0XYXSN See Details |
SW | 2 in | 40mm (1 5/8 in) | w/ Strainer | Standard Valve |
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| 2 A4AP DN RA 2SW | A40BA500A7S50X0XNXPN See Details |
SW | 2 in | 50mm (2 in) | No Strainer | Meets Pressure Equipment Directive (PED) |
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| 2-1/2 A4AP DN RA 2-1/2SW | A40BA650A7S65X0XNXPN See Details |
SW | 2 1/2 in | 65mm (2 1/2 in) | No Strainer | Meets Pressure Equipment Directive (PED) |
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| 3 A4AP RA 3SW ST | A40BA750A7S75X0XYXSN See Details |
SW | 3 in | 75mm (3 in) | w/ Strainer | Standard Valve |
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| 4 A4AP DN RA 4SW | A40BAA00A7SP0X0XNXPN See Details |
SW | 4 in | 100mm (4 in) | No Strainer | Meets Pressure Equipment Directive (PED) |
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| 4 A4AP RA 4SW ST | A40BAA00A7SP0X0XYXSN See Details |
SW | 4 in | 100mm (4 in) | w/ Strainer | Standard Valve |
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| 2-1/2 A4AP RA 3WN ST | A40BA650A7W75X0XYXSN See Details |
WN | 3 in | 65mm (2 1/2 in) | w/ Strainer | Standard Valve |
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| 3 A4AP RA 3WN ST | A40BA750A7W75X0XYXSN See Details |
WN | 3 in | 75mm (3 in) | w/ Strainer | Standard Valve |
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