2-Way Normally Closed Valve

A complete line of valves with a great selection of options and exceptional proven performance. The standard in the field. Air, water, and other fluids compatible with standard Buna seals. Hot water, steam, gasoline, and many oils require special seal materials.

The flagship valve initially created for the fluid power industry.
Heavy duty and made of stainless steel.
A real workhorse with proven performance.
It has the greatest amount of options available of all the valves.
Wide range of orifice sizes from 1/32" to 5/16".

Valve specifications — Series 20 Model 22
+ MAX. OPER. PRESS. DIFF.				ORIFICE SIZE	CV FACTOR	VALVE NUMBER GROMMET HOUSING		VALVE NUMBER CONDUIT HOUSING
AC		DC		ORIFICE SIZE	CV FACTOR	1/8 NPT PORTS	1/4 NPT PORTS	1/8 NPT PORTS	1/4 NPT PORTS

500		500		1/32	.024	22G7DGM	22G9DGM	22G7DCM	22G9DCM
250	(500)	250	(500)	3/64	.052	22H7DGM	22H9DGM	22H7DCM	22H9DCM
200	(400)	200	(400)	1/16	.095	22J7DGM	22J9DGM	22J7DCM	22J9DCM
125	(300)	125	(250)	3/32	.156	22K7DGM	22K9DGM	22K7DCM	22K9DCM
100	(200)	100	(200)	1/8	.284	22N7DGM	22N9DGM	22N7DCM	22N9DCM
75		50		5/32	.404	22O7DGM	22O9DGM	22O7DCM	22O9DCM
50		25		3/16	.500	22P7DGM	22P9DGM	22P7DCM	22P9DCM
20		5		1/4	.700	22R7DGM	22R9DGM	22R7DCM	22R9DCM
15		—		5/16	1.000	—	22S9DGM	—	22S9DCM

* FKM seals not recommended for pressure ratings above 500 PSI.
+ Ratings in brackets are optional extended ratings; consult factory.

Ordering Information:

When ordering valves or repair packs add voltage and frequency to complete valve number. For example: valve (22N9DCM 120/60) repair pack (K22NDD AC)

When ordering operators add the letter “O” to the front of the valve number, replace body port number with the letter “D”: example: operator (O22NDDCM 120/60)

Operating Conditions

Media: Air, water, and other fluids compatible with standard Buna seals. Hot water, steam, gasoline, and many oils require special seal materials. (Series 20 pressure ratings may change due to the viscosity of the liquid.)*
Valve Temperature Range: Standard Valves – 0°F (-18°C) to 104°F (40°C) ambient; 0°F (-18°C) to 150°F (65°C) media. Optional Valves – can tolerate much higher or much lower ambient and media temperatures.
Maximum Operating Pressure Differentials: See table above.
Burst Pressure: 5000 PSI
Leakage: Bubble tight for standard valves.
Vacuum: To 5 Microns*

Electrical Characteristics

Coil Voltage: 12/DC, 24/DC, 48/DC, 125/DC, 120/60-110/50, 240/60, and 24/60.
Nominal Power: AC — 7.7 Watts DC — 9.5 Watts
Coil Construction: Molded (Std.), Non-molded Class A and Potted Class F or Class H (Opt.)
Typical Response Time on Air: 4 - 16 Milliseconds
Operating Speed: Up to 600 CPM
Duty Cycle: Continuous

Mechanical Characteristics

Body: Stainless Steel (Std.) or Brass (Opt.)
Internal Components: Stainless Steel. Copper – AC Only.
Elastomers: Nitrile (Buna) (Std.). Many other elastomers available.*
Orifice Diameter: See table above.
Porting: Standard 1/8" and 1/4" NPT (other ports available).
Listings: Most valves are UL and CSA listed.*
Life Expectancy: Millions of cycles, depending on application, lubrication, etc.
Valve Weight: Grommet Valve: 1.06 lb Conduit Valve: 1.13 lb
Repair Packs: See table above.
Options: Alternate Port Locations, Metering, Manual Override, Alternate Elastomers, Spade Terminal Coil, European Style DIN, Explosion Proof and Magnetic Latching Coil, Female DIN Style Connector Part Numbers DIN COIL (2 TERMINALS W/GROUND) #20-198 & DIN COIL (3 TERMINALS W/GROUND) #20-19102

Series 20 General Purpose Valves Conduit

Technical drawing — MODEL 22 1/4-18 NPT 2WNC CONDUIT CONNECTION — MODEL 22
1/4-18 NPT 2WNC CONDUIT CONNECTION

Technical drawing — MODEL 22 1/8-27 NPT 2WNC CONDUIT CONNECTION — MODEL 22
1/8-27 NPT 2WNC CONDUIT CONNECTION

Technical drawing — MODEL 22 MANUAL OVERRIDE 2WNC CONDUIT CONNECTION — MODEL 22
MANUAL OVERRIDE 2WNC CONDUIT CONNECTION

Technical drawing — MODEL 22 METERING 2WNC CONDUIT CONNECTION — MODEL 22
METERING 2WNC CONDUIT CONNECTION

Series 20 General Purpose Valves DIN

Technical drawing — MODEL 22 1/4-18 NPT 2WNC DIN STYLE COIL — MODEL 22
1/4-18 NPT 2WNC DIN STYLE COIL

Technical drawing — MODEL 22 1/8-27 NPT 2WNC DIN STYLE COIL — MODEL 22
1/8-27 NPT 2WNC DIN STYLE COIL

Technical drawing — MODEL 22 MANUAL OVERRIDE 2WNC DIN STYLE COIL — MODEL 22
MANUAL OVERRIDE 2WNC DIN STYLE COIL

Technical drawing — MODEL 22 METERING 2WNC DIN STYLE COIL — MODEL 22
METERING 2WNC DIN STYLE COIL

Series 20 General Purpose Valves Grommet

Technical drawing — MODEL 22 1/4-18 NPT 2WNC GROMMET WITH LEADS — MODEL 22
1/4-18 NPT 2WNC GROMMET WITH LEADS

Technical drawing — MODEL 22 1/8-27 NPT 2WNC GROMMET WITH LEADS — MODEL 22
1/8-27 NPT 2WNC GROMMET WITH LEADS

Technical drawing — MODEL 22 MANUAL OVERRIDE 2WNC GROMMET HOUSING WITH LEADS — MODEL 22
MANUAL OVERRIDE 2WNC GROMMET HOUSING WITH LEADS

Technical drawing — MODEL 22 METERING 2WNC GROMMET HOUSING WITH LEADS — MODEL 22
METERING 2WNC GROMMET HOUSING WITH LEADS

Series 20 General Purpose Valves Yoke Leads

Technical drawing — MODEL 22 1/4-18 NPT 2WNC YOKE WITH LEADS — MODEL 22
1/4-18 NPT 2WNC YOKE WITH LEADS

Technical drawing — MODEL 22 1/8-27 NPT 2WNC YOKE WITH LEADS — MODEL 22
1/8-27 NPT 2WNC YOKE WITH LEADS

Technical drawing — MODEL 22 MANUAL OVERRIDE 2WNC YOKE WITH LEADS — MODEL 22
MANUAL OVERRIDE 2WNC YOKE WITH LEADS

Technical drawing — MODEL 22 METERING 2WNC YOKE WITH LEADS — MODEL 22
METERING 2WNC YOKE WITH LEADS

Series 20 General Purpose Valves Yoke Spades

Technical drawing — MODEL 22 1/4-18 NPT 2WNC YOKE WITH SPADE TERMINALS — MODEL 22
1/4-18 NPT 2WNC YOKE WITH SPADE TERMINALS

Technical drawing — MODEL 22 1/8-27 NPT 2WNC YOKE WITH SPADE TERMINALS — MODEL 22
1/8-27 NPT 2WNC YOKE WITH SPADE TERMINALS

Technical drawing — MODEL 22 MANUAL OVERRIDE 2WNC YOKE WITH SPADE TERMINALS — MODEL 22
MANUAL OVERRIDE 2WNC YOKE WITH SPADE TERMINALS

Technical drawing — MODEL 22 METERING 2WNC YOKE WITH SPADE TERMINALS — MODEL 22
METERING 2WNC YOKE WITH SPADE TERMINALS

Series 20 General Purpose Valves Conduit/Bracket Connection

Technical drawing — MODEL 22 1/4-18 NPT 2WNC CONDUIT/BRACKET CONNECTION — MODEL 22
1/4-18 NPT 2WNC CONDUIT/BRACKET CONNECTION

Technical drawing — MODEL 22 1/8-27 NPT 2WNC CONDUIT/BRACKET CONNECTION — MODEL 22
1/8-27 NPT 2WNC CONDUIT/BRACKET CONNECTION

Technical drawing — MODEL 22 MANUAL OVERRIDE 2WNC CONDUIT/BRACKET CONNECTION — MODEL 22
MANUAL OVERRIDE 2WNC CONDUIT/BRACKET CONNECTION

Technical drawing — MODEL 22 METERING 2WNC CONDUIT/BRACKET CONNECTION — MODEL 22
METERING 2WNC CONDUIT/BRACKET CONNECTION

Series 20 General Purpose Valves Grommet/Bracket Connection

Technical drawing — MODEL 22 1/4-18 NPT 2WNC GROMMET/BRACKET WITH LEADS — MODEL 22
1/4-18 NPT 2WNC GROMMET/BRACKET WITH LEADS

Technical drawing — MODEL 22 1/8-27 NPT 2WNC GROMMET/BRACKET WITH LEADS — MODEL 22
1/8-27 NPT 2WNC GROMMET/BRACKET WITH LEADS

Technical drawing — MODEL 22 MANUAL OVERRIDE 2WNC GROMMET/BRACKET HOUSING WITH LEADS — MODEL 22
MANUAL OVERRIDE 2WNC GROMMET/BRACKET HOUSING WITH LEADS

Technical drawing — MODEL 22 METERING 2WNC GROMMET/BRACKET HOUSING WITH LEADS — MODEL 22
METERING 2WNC GROMMET/BRACKET HOUSING WITH LEADS

Series 20 Operators Conduit

Technical drawing — MODEL O22 2WNC CONDUIT CONNECTION — MODEL O22 2WNC CONDUIT CONNECTION

Series 20 Operators DIN

Technical drawing — MODEL O22 2WNC DIN STYLE COIL — MODEL O22 2WNC DIN STYLE COIL

Series 20 Operators Explosion Proof

Technical drawing — MODEL O22 2WNC EXPLOSION PROOF — MODEL O22 2WNC EXPLOSION PROOF

Series 20 Operators Grommet

Technical drawing — MODEL O22 2WNC GROMMET WITH LEADS — MODEL O22 2WNC GROMMET WITH LEADS

Series 20 Operators Yoke Leads

Technical drawing — MODEL O22 2WNC MOLDED COIL WITH YOKE — MODEL O22 2WNC MOLDED COIL WITH YOKE

Series 20 Operators Yoke Spades

Technical drawing — MODEL O22 2WNC YOKE WITH SPADE TERMINALS — MODEL O22 2WNC YOKE WITH SPADE TERMINALS

Series 20 Operators Conduit/Bracket Connection

Technical drawing — MODEL O22 2WNC CONDUIT/BRACKET CONNECTION — MODEL O22 2WNC CONDUIT/BRACKET CONNECTION

Series 20 Operators Grommet/Bracket Connection

Technical drawing — MODEL O22 2WNC GROMMET/BRACKET HOUSING WITH LEADS — MODEL O22 2WNC GROMMET/BRACKET HOUSING WITH LEADS

Cv Flow Formulae

PeterPaul has created this page for you so you can calculate the flow or Cv (flow coefficient) to make the relationship visible between the pressure drop (the difference in pressure between two points of a liquid/gas carrying network) and the flow rate.

The use of this flow coefficient (Cv) calculator offers a standard calculation to compare valve capacities and sizing for a wide range of applications. The type and sizing of a valve or regulator can have a large impact on the performance of the assembly for transferring gas or liquids in the system.

Our sales department is ready to answer questions and to solve your valve needs. Please feel free to call, chat or email us.

Liquid Flow

Calculate Flow in GPM

P1−P2

PSI

Specific gravity

Flow

GPM

Calculate Cv

Flow

GPM

P1−P2

PSI

Specific gravity

Calculate P1−P2

Specific gravity

Flow

GPM

P1−P2

PSI

Gas Flow P2 > 53% of P1 (subsonic)

Calculate Flow in CFM

PSIA

Specific gravity

Temp (460° + °F)

°R

Flow

CFM

Calculate Cv

Flow

CFM

PSIA

Specific gravity

Temp (460° + °F)

°R

Calculate P1 (approx.)

Flow

CFM

PSIA

Specific gravity

Temp (460° + °F)

°R

PSIA

Calculate P2 (approx.)

Flow

CFM

PSIA

Specific gravity

Temp (460° + °F)

°R

PSIA

Gas Flow P2 < 53% of P1 (sonic)

Calculate Flow in CFM

PSIA

Specific gravity

Temp (460° + °F)

°R

Flow

CFM

Calculate Cv

Flow

CFM

PSIA

Specific gravity

Temp (460° + °F)

°R

Calculate P1

Flow

CFM

Specific gravity

Temp (460° + °F)

°R

PSIA

DISCLAIMER: Gas flow is only an approximation using Cv.

Series 20 Model 22

2-Way Normally Closed Valve

Ordering Information:

Operating Conditions

Electrical Characteristics

Mechanical Characteristics

Series 20 General Purpose Valves Conduit

Series 20 General Purpose Valves DIN

Series 20 General Purpose Valves Grommet

Series 20 General Purpose Valves Yoke Leads

Series 20 General Purpose Valves Yoke Spades

Series 20 General Purpose Valves Conduit/Bracket Connection

Series 20 General Purpose Valves Grommet/Bracket Connection

Series 20 Operators Conduit

Series 20 Operators DIN

Series 20 Operators Explosion Proof

Series 20 Operators Grommet

Series 20 Operators Yoke Leads

Series 20 Operators Yoke Spades

Series 20 Operators Conduit/Bracket Connection

Series 20 Operators Grommet/Bracket Connection

Cv Flow Formulae

Liquid Flow

Gas Flow P2 > 53% of P1 (subsonic)

Gas Flow P2 < 53% of P1 (sonic)