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Parker A4AS 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 Port Size Check Valve Coil Coil Style Flange Type Flange Connection Range Reduced Capacity Set Point Strainer Price Qty Add To Cart
4 A4AS RA 4SW 115 A40FAA00A7SP0A1XNXSN
See Details
100mm (4 in) None 115/50 Leaded, Standard SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,381.59
4 A4AS RA 4SW 120G QD ST A40FAA00A7SP0B6XYXSN
See Details
100mm (4 in) None 120/60 DIN, Green LED Pilot Light SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) w/ Strainer
1
$6,228.96
4 A4AS RA 4SW 120R QD A40FAA00A7SP0B5XNXSN
See Details
100mm (4 in) None 120/60 DIN, Red LED Pilot Light SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,498.44
4 A4AS RA 4WN 120R QD A40FAA00A7WP0B5XNXSN
See Details
100mm (4 in) None 120/60 DIN, Red LED Pilot Light WN 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,623.84
4 A4AS RA 4SW 120 QD A40FAA00A7SP0B4XNXSN
See Details
100mm (4 in) None 120/60 DIN, Standard SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,389.57
4 A4AS RA 4SW 120 QD ST A40FAA00A7SP0B4XYXSN
See Details
100mm (4 in) None 120/60 DIN, Standard SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) w/ Strainer
1
$6,120.09
4 A4AS RA 4SW 120G A40FAA00A7SP0B3XNXSN
See Details
100mm (4 in) None 120/60 Leaded, Green LED Pilot Light SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,490.46
4 A4AS RA 4SW 120G ST A40FAA00A7SP0B3XYXSN
See Details
100mm (4 in) None 120/60 Leaded, Green LED Pilot Light SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) w/ Strainer
1
$6,220.98
4 A4AS RA 4WN 120G A40FAA00A7WP0B3XNXSN
See Details
100mm (4 in) None 120/60 Leaded, Green LED Pilot Light WN 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,615.86
4 A4AS RA 4WN 120G ST A40FAA00A7WP0B3XYXSN
See Details
100mm (4 in) None 120/60 Leaded, Green LED Pilot Light WN 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) w/ Strainer
1
$6,346.38
4 A4AS RA 4SW 120 A40FAA00A7SP0B1XNXSN
See Details
100mm (4 in) None 120/60 Leaded, Standard SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,381.59
4 A4AS RA 4SW 120 ST A40FAA00A7SP0B1XYXSN
See Details
100mm (4 in) None 120/60 Leaded, Standard SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) w/ Strainer
1
$6,112.11
4 A4AS RA 4WN 120 A40FAA00A7WP0B1XNXSN
See Details
100mm (4 in) None 120/60 Leaded, Standard WN 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,506.99
4 A4AS RA 4WN 120 ST A40FAA00A7WP0B1XYXSN
See Details
100mm (4 in) None 120/60 Leaded, Standard WN 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) w/ Strainer
1
$6,237.51
4 A4AS RA 4SW 230G A40FAA00A7SP0F3XNXSN
See Details
100mm (4 in) None 230/50 Leaded, Green LED Pilot Light SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,490.46
4 A4AS DN RA 4SW 230 A40FAA00A7SP0F1XNXPN
See Details
100mm (4 in) None 230/50 Leaded, Standard SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,655.76
4 A4AS RA 4SW 230 A40FAA00A7SP0F1XNXSN
See Details
100mm (4 in) None 230/50 Leaded, Standard SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,381.59
4 A4AS RA 4SW 24/DC ST A40FAA00A7SP0R1XYXSN
See Details
100mm (4 in) None 24 Leaded, Standard SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) w/ Strainer
1
$6,315.03
4 A4AS RA 4SW 24/50 A40FAA00A7SP0L1XNXSN
See Details
100mm (4 in) None 24/50 Leaded, Standard SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,412.37
4 A4AS RA 4SW 240 A40FAA00A7SP0H1XNXSN
See Details
100mm (4 in) None 240/60 Leaded, Standard SW 4 in 0.35 to 10 (5 to 150) Full Capacity 2.8 (40) No Strainer
1
$4,381.59