Port Size
- 20mm (3/4 in) (3)
- 25mm (1 in) (3)
- 32mm (1 1/4 in) (8)
- 40mm (1 5/8 in) (6)
- 50mm (2 in) (8)
- 65mm (2 1/2 in) (6)
- 75mm (3 in) (7)
- 100mm (4 in) (11)
Flange Type
Flange Connection
Check Valve
Coil
Coil Style
Motor/IO Module
- 3 (3)
- Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM (29)
- Motor Assembly, 240 V 50/60 Hz 4-20 mA Std CAM (3)
- Mounting Kit, Standard (Std) CAM (9)
- None (8)
Plated
Range
Reduced Capacity
Strainer
Valve Material
Parker A4AM Electrically 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 | Port Size | Flange Type | Flange Connection | Motor/IO Module | Range | Reduced Capacity | Set Point | Strainer | Valve Material | Price | Qty | Add To Cart | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/4 A4AM RA HDWR | A409A200A7X00X01NXSN See Details |
20mm (3/4 in) | No Flange | None | Mounting Kit, Standard (Std) CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
|
|||
| 3/4 A4AM RA | A409A200A7X00X0XNXSN See Details |
20mm (3/4 in) | No Flange | None | None | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
|
|||
| 3/4 A4AM RA 3/4SW 120V4-20 | A409A200A7S20X04NXSN See Details |
20mm (3/4 in) | SW | 3/4 in | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
|
|||
| 1 A4AM RA 120V4-20 | A409A250A7X00X04NXSN See Details |
25mm (1 in) | No Flange | None | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
|
|||
| 1 A4AM RA 3/4SW 120V4-20 | A409A250A7S20X04NXSN See Details |
25mm (1 in) | SW | 3/4 in | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
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| 1 A4AM RA 1SW 120V4-20 ST | A409A250A7S25X04YXSN See Details |
25mm (1 in) | SW | 1 in | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-1/4 A4AM RA 120V4-20 | A409A320A7X00X04NXSN See Details |
32mm (1 1/4 in) | No Flange | None | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
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| 1-1/4 A4AM RA 35% CAP HDWR | A409A323A7X00X01NXSN See Details |
32mm (1 1/4 in) | No Flange | None | Mounting Kit, Standard (Std) CAM | 0.35 to 10 (5 to 150) | 0.35 | 2.8 (40) | No Strainer | Standard Valve |
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| 1-1/4 A4AM RA HDWR | A409A320A7X00X01NXSN See Details |
32mm (1 1/4 in) | No Flange | None | Mounting Kit, Standard (Std) CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
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| 1-1/4 A4AM RA | A409A320A7X00X0XNXSN See Details |
32mm (1 1/4 in) | No Flange | None | None | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
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| 1-1/4 A4AM RA 1-1/4SW 120V4-20 | A409A320A7S32X04NXSN See Details |
32mm (1 1/4 in) | SW | 1 1/4 in | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
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| 1-1/4 A4AM RA 1-1/4SW 120V4-20 ST | A409A320A7S32X04YXSN See Details |
32mm (1 1/4 in) | SW | 1 1/4 in | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-1/4 A4AM RA 1-1/2SW 120V4-20 ST | A409A320A7S38X04YXSN See Details |
32mm (1 1/4 in) | SW | 1 1/2 in | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-1/4 A4AM RA 1-1/2SW HDWR ST | A409A320A7S38X01YXSN See Details |
32mm (1 1/4 in) | SW | 1 1/2 in | Mounting Kit, Standard (Std) CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-5/8 A4AM RA 120V4-20 | A409A400A7X00X04NXSN See Details |
40mm (1 5/8 in) | No Flange | None | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
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| 1-5/8 A4AM RA 1-1/2SW 120V4-20 | A409A400A7S38X04NXSN See Details |
40mm (1 5/8 in) | SW | 1 1/2 in | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | No Strainer | Standard Valve |
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| 1-5/8 A4AM RA 1-1/2SW 120V4-20 ST | A409A400A7S38X04YXSN See Details |
40mm (1 5/8 in) | SW | 1 1/2 in | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-5/8 A4AM RA 2SW 24V0-135 ST | A409A400A7S50X03YXSN See Details |
40mm (1 5/8 in) | SW | 2 in | 3 | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-5/8 A4AM RA 2SW 120V4-20 ST | A409A400A7S50X04YXSN See Details |
40mm (1 5/8 in) | SW | 2 in | Motor Assembly, 120 V 50/60 Hz 4-20 mA Std CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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| 1-5/8 A4AM RA 2SW HDWR ST | A409A400A7S50X01YXSN See Details |
40mm (1 5/8 in) | SW | 2 in | Mounting Kit, Standard (Std) CAM | 0.35 to 10 (5 to 150) | Full Capacity | 2.8 (40) | w/ Strainer | Standard Valve |
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