Parker Water Valves / High performance 2-way pilot operated solenoid valves for water, light oils and steam

Parker 7321B/7322B are diaphragm pilot operated solenoid valves and require a minimum differential pressure to operate. This serie is available in both Normally Closed and Normally Open function: 7321B Serie is a Normally Closed family (closed when de-energised), 7322B Serie is the Normally Open family (Open when de-energised).

Media

These valves have been developed to achieve the best performances for water, steam, light oils (up to 2°E). Therefore these valves are not usable with gas and air. We recommend to choose NBR versions for plumbing mkt (max. temp. 90°C), FKM version for water/light oils control applications up to 140°C, EPDM version for superheated water and steam (up to 140°C)

  • Valve body: CW617N UNI EN 12165:98 Forged Brass
  • Enclosing tube:AISI 304 stainless steel
  • Plunger: AISI 430F St. Steel

    • Spring: AISI 302 St. Steel
    • Seals: NBR (Buna N) – EPDM FKM (Viton)
    • Shading ring: Copper

Available Options

Manual Control

Parker 7321B Serie (NC version only) can be ordered with Manual control option. A manual control is used to operate the valve without connecting the coil. The control consists in a slotted-head screw for a screwdriver and has two possible positions:

  Open  : The letter “A” is in the upper position of the screw head (fig.1,2)

  Closed  : The letter “C” is in the upper position of the screw head (fig.1,2)

Standing in its closed position, the valve operates normally when coil is energised/de-energised. Manual and speed control are standard on 2 ½” and 3″ versions.

Speed Control (Anti-Water Hammer Control)

Parker 7321B Serie (NC version only) can be ordered with Speed control option. The closure time of certain types can be changed by means of the adjusting screw. The latter, by acting as a throttle on the inlet equalisation (pilot) hole of the valve, slows down the closure speed of the valve, thus reducing the water hammer effect. The regulation range is as follows:

Screw fully   closed  : Valve always open
Screw fully   open  : Max. closure speed

Pressure Range

A wide range of configurations for this solenoid valve family is available: port sizes from 3/8″ to 3″ in brass, with BSPP port threads or with NPT ports, along with a wide range of seal and disc materials ensures that we have a standard valve to fit most applications. In the table herebelow you might also find an explanation of the general description system for 7321B/7322B Series water valves family.

2/2 Normally Closed – BSPP threads

Port Size G Orifce mm Flow Factors Minimum Pressure Maximum Differential Weight Kg Manual Control Speed Control Pressure Description Part Number Dimensional Drawing
m3/h l/min
3/8″ 13 3.0 50.0 0.1 20 0.55 - - 7321BIN00 443776W 2
13 3.0 50.0 0.1 20 0.55 x - 7321BIN01 443777W
1/2″ 13 3.0 50.0 0.1 20 0.58 - - 7321BAN00 443779W 3
13 3.0 50.0 0.1 20 0.58 x - 7321BAN01 443780W
3/4″ 20 8.4 139.9 0.1 20 1.02 - - 7321BCN00 443782W 4
20 8.4 139.9 0.1 10 1.02 x - 7321BCN01 443783W
20 8.4 139.9 0.1 10 1.02 x x 7321BCN02 443784W
1″ 25 9.6 159.9 0.1 20 1.08 - - 7321BDN00 443786W 5
25 9.6 159.9 0.1 10 1.08 x - 7321BDN01 443787W
25 9.6 159.9 0.1 10 1.08 x x 7321BDN02 443788W
1 1/4″ 35 25.2 419.8 0.1 10 3.15 - - 7321BEN00 443790W 6
35 25.2 419.8 0.1 5 3.15 x 7321BEN01 443791W
35 25.2 419.8 0.1 5 3.15 x x 7321BEN02 443792W
1 1/2″ 40 30.0 499.8 0.1 10 2.90 - - 7321BFN00 443794W 7
40 30.0 499.8 0.1 5 2.90 x - 7321BFN01 443795W
40 30.0 499.8 0.1 5 2.90 x x 7321BFN02 443796W
2″ 50 37.2 619.8 0.1 10 4.30 - - 7321BGN00 443798W 8
50 37.2 619.8 0.1 5 4.30 x - 7321BGN01 443799W
50 37.2 619.8 0.1 5 4.30 x x 7321BGN02 443800W
2 ½” 65 66.0 1099.6 0.2 10 13.60 x x 7321BLN02 443802W 9
3″ 75 80.0 1332.8 0.2 10 11.90 x x 7321BMN02 443803W 10
Nominal pressure: 25 bar from 1 ¼” to 3″ 16 bar
Port Size G Orifce mm Flow Factors Minimum Pressure Maximum Differential Weight Kg Manual Control Speed Control Pressure Description Part Number Dimensional Drawing
m3/h l/min
3/8″ 13 3.0 49.98 0.1 10 0.55 - - 7321BIH00 443778W 2
1/2″ 13 3.0 49.98 0.1 10 0.58 - - 7321BAH00 443781W 3
3/4″ 20 8.4 139.94 0.1 10 1.02 - - 7321BCH00 443785W 4
1″ 25 9.6 159.94 0.1 10 1.08 - - 7321BDH00 443789W 5
1 ¼” 25 25.2 419.83 0.1 10 3.15 - - 7321BEH00 443793W 6
1 ½” 40 30.0 499.80 0.1 10 2.90 - - 7321BFH00 443797W 7
2″ 50 37.2 619.75 0.1 10 4.30 - - 7321BGH00 443801W 8
Nominal pressure: 25 bar -Max press for steam: 4 bar
Port Size G Orifce mm Flow Factors Minimum Pressure Maximum Differential Weight Kg Manual Control Speed Control Pressure Description Part Number Dimensional Drawing
m3/h l/min
3/8″ 13 3.0 50.0 0.1 20 0.55 - - 7321BIV00 444492W 2
1/2″ 13 3.0 50.0 0.1 20 0.58 - - 7321BAV00 444494W 3
3/4″ 20 8.4 139.9 0.1 20 1.02 - - 7321BCV00 444497W 4
1″ 25 9.6 159.9 0.1 20 1.08 - - 7321BDV00 443804W 5
Nominal pressure: 25 bar

2/2 Normally Open – BSPP threads

Port Size G Orifce mm Flow Factors Minimum Pressure Maximum Differential Weight Kg Manual Control Speed Control Pressure Description Part Number Dimensional Drawing
m3/h l/min
3/8″ 13 3.0 49.98 0.1 20 0.55 - - 7322BIN00 443805W 11
1/2″ 13 3.0 49.98 0.1 20 0.58 - - 7322BAN00 443806W 12
3/4″ 20 8.4 139.94 0.1 20 1.02 - - 7322BCN00 443807W 13
1″ 25 9.6 159.94 0.1 20 1.08 - - 7322BDN00 443808W 14
1 ¼” 35 25.2 419.83 0.1 10 3.15 - - 7322BEN00 443809W 15
1 ½” 40 30.0 499.80 0.1 10 2.90 - - 7322BFN00 443810W 16
2″ 50 37.2 619.75 0.1 10 4.30 - - 7322BGN00 443811W 17
2 ½” 65 66.0 1099.56 0.2 10 13.60 - x 7322BLN06 444513W 18
3” 75 80.0 1332.80 0.2 10 11.90 - x 7322BMN06 444503W 19
Nominal pressure: 25 bar from 1 ¼” to 3″ 16 bar
Port Size G Ori?ce mm Flow Factors Minimum Pressure Maximum Differential Weight Kg Manual Control Speed Control Pressure Description Part Number Dimensional Drawing
m3/h l/min
3/8″ 13 3.0 49.98 0.1 20 0.55 - - 7322BIV00 444499W 11
1/2″ 13 3.0 49.98 0.1 20 0.58 - - 7322BAV00 444500W 12
3/4″ 20 8.4 139.94 0.1 20 1.02 - - 7322BCV00 444501W 13
1″ 25 9.6 159.94 0.1 20 1.08 - - 7322BDV00 444502W 14
1 ¼” 25 25.2 419.83 0.1 10 3.15 - - 7322BEV00 443809W 15
1 ½” 40 30.0 499.80 0.1 10 2.90 - - 7322BFV00 443810W 16
2″ 50 37.2 619.75 0.1 10 4.30 - - 7322BGV00 443811W 17
Nominal pressure: 25 bar
Port Size G Orifice mm Flow Factors Minimum Pressure Maximum Differential Weight Kg Manual Control Speed Control Pressure Description Part Number Dimensional Drawing
m3/h l/min
3/8″ 13 3.0 49.98 0.1 10 0.55 - - 7322BIH00 444600W 11
1/2″ 13 3.0 49.98 0.1 10 0.58 - - 7322BAH00 4446001W 12
3/4″ 20 8.4 139.94 0.1 10 1.02 - - 7322BCH00 444602W 13
1″ 25 9.6 159.94 0.1 10 1.08 - - 7322BDH00 444603W 14
1 ¼” 25 25.2 419.83 0.1 10 3.15 - - 7322BEH00 444576W 15
1 ½” 40 30.0 499.80 0.1 10 2.90 - - 7322BFH00 444604W 16
2″ 50 37.2 619.75 0.1 10 4.30 - - 7322BGH00 444605W 17
Nominal pressure: 25 bar from 1 ¼” to 2″ 16 bar

Coils

Standard Mono-Frequency, F class, IP65

Encapsulated in synthetic material, Connector for 2P + E DIN 43650 A Plug. With connector.

Voltage Power Consumption Approvals Description Part Number Dimensional Drawing
24/50 8W - 481865A2 439500 27
48/50 8W - 481865A4 439515 27
110/50 8W - 481865A5 439514 27
220-2230/50 8W - 4818653D 439502 27
380/50 8W - 481865A9 439531 27
24/60 8W - 481865B2 439804 27
230/60 8W - 481865J3 439530 27
115/60 8W - 481865K8 439528 27
12DC 9W - 481865C1 439508 27
24DC 9W - 481865C2 439501 27
48DC 9W - 481865C4 439523 27
110V DC 9W - 481865C5 439532 27

Standard Bi-Frequency, F class, IP65

Encapsulated in synthetic material, Connector for 2P + E DIN 43650 A Plug.With connector.

Voltage Power Consumption Approvals Description Part Number Dimensional Drawing
12/50-60 9W - 4835101W 439812 27
24/60-60 8W - 483510P0 439503 27
48/50-60 9W - 483510S4 439526 27
110-115/50 120/60 9W - 483510S5 439507 27
220-240/50 240/60 9W - 483510S6 439504 27

IP67, F class, two 500mm flying leads

Encapsulated in synthetic material. Protection rate IP67 as per DIN 40050. Connection: 2 x 500 mm cables

Voltage Power Consumption Approvals Description Part Number Dimensional Drawing
24/50 – 24/60 9W - 496081P0 439816 28
110-115/50 120/60 9W - 496081S5 439820 28
110-115/50 120/60 9W - 496081S6 439822 28
24DC 9W - 496081C2 439818 28
12DC 9W - 496081C1 439814 28

IP67, F class, UL approved

Encapsulated in synthetic material. Protection rate IP67 as per DIN 40050. Connection: 2 x 500 mm cables. with two 500mm flying leads

Voltage Power Consumption Approvals Description Part Number Dimensional Drawing
24/60 13W UL 496082B2 439826 28
110/50 120/60 13W UL 496082P3 439828 28
208-140/60 14W UL 496082U3 439824 28
220/50 240/60 13W UL 496082Q3 439834 28
24DC 16W UL 496082C2 439832 28
12DC 16W UL 496082C1 439830 28

Explosion-proof EEx m II T4 (IP65)

Coil with housing integrated.  Coil and magnetic circuit encapsulated in synthetic material. The complete housing is supplied with an encapsulated connection cable (3 x 0.75 mm2 section), cable length is 3 000 mm with cable gland PG11. Power consumption: 8W AC, 9W DC.a

Voltage Power Consumption Approvals Description Part Number Dimensional Drawing
24DC 9W ATEX EEx m II 2GD 492670C2 492670C2 29
230/50 8W ATEX EEx m II 2GD 492670F4 492670F4 29

Explosion-proof II 2 G-EEx dm IIC T4

Coil/housing assembly encapsulated in synthetic material (H class). Protection degree: IP67.  Cable connection through cable gland M20x1.5 (DIN 46320).

Voltage Power Consumption Approvals Description Part Number Dimensional Drawing
24DC 8W ATEX – EEx d mb IIC 2GD 495905C2 495905C2 30
48DC 8W ATEX – EEx d mb IIC 2GD 495905C4 495905C4 30
110DC 8W ATEX – EEx d mb IIC 2GD 495905C5 495905C5 30
24/50 8W ATEX – EEx d mb IIC 2GD 495905A2 495905C5 30
48/50 8W ATEX – EEx d mb IIC 2GD 495905A4 495905A4 30
240/60 8W ATEX – EEx d mb IIC 2GD 495905B8 495905B8 30
115/50 8W ATEX – EEx d mb IIC 2GD 495905E5 495905E5 30
230/50 8W ATEX – EEx d mb IIC 2GD 495905F4 495905F4 30
115/60 8W ATEX – EEx d mb IIC 2GD 495905K8 495905K8 30