Series 20 Model 23 (exhaust to atmosphere)

3-Way Normally Closed Valve (Exhaust to Atmosphere)

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 1/4".

Valve specifications — Series 20 Model 23 (Exhaust to Atmosphere)
+ MAX. OPER. PRESS. DIFF.				ORIFICE SIZE		CV FACTOR		VALVE NUMBER GROMMET HOUSING		VALVE NUMBER CONDUIT HOUSING
AC		DC		INLET	EXH	INLET	EXH	1/8 NPT PORTS	1/4 NPT PORTS	1/8 NPT PORTS	1/4 NPT PORTS

400		400		1/32	1/32	.024	.024	23GG7DGM	23GG9DGM	23GG7DCM	23GG9DCM
150	(200)	150	(200)	3/64	1/16	.052	.095	23HJ7DGM	23HJ9DGM	23HJ7DCM	23HJ9DCM
100	(135)	100	(135)	1/16	1/16	.095	.095	23JJ7DGM	23JJ9DGM	23JJ7DCM	23JJ9DCM
100	(135)	100	(135)	1/16	3/32	.095	.156	23JK7DGM	23JK9DGM	23JK7DCM	23JK9DCM
75	(100)	75	(100)	3/32	3/32	.156	.156	23KK7DGM	23KK9DGM	23KK7DCM	23KK9DCM
50	(70)	50	(70)	1/8	3/32	.284	.156	23NK7DGM	23NK9DGM	23NK7DCM	23NK9DCM
35	(40)	35	(40)	1/8	1/8	.284	.201	23NN7DGM^	23NN9DGM^	23NN7DCM^	23NN9DCM^
20		20		3/16	3/32	.500	.156	23PK7DGM	23PK9DGM	23PK7DCM	23PK9DCM
20		20		3/16	1/8	.500	.201	23PN7DGM^	23PN9DGM^	23PN7DCM^	23PN9DCM^
15		—		1/4	3/32	.700	.156	23RK7DGM	23RK9DGM	23RK7DCM	23RK9DCM
15		—		1/4	1/8	.700	.201	23RN7DGM^	23RN9DGM^	23RN7DCM^	23RN9DCM^

^ VALVES WITH 1/8 N.O. ORIFICE ARE UL LISTED ONLY

Ordering Information:

When ordering valves or repair packs add voltage and frequency to complete valve number. examples: valve (23JJ7DGM 12/DC) repair pack (K23JJD DC)

When ordering operators add the letter “O” to the front of the valve number, replace body port number with the letter “D”: example: operator (O23JJDDGM 12/DC)

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 — 8.7 Watts DC — 9.5 Watts
Coil Construction: Molded (Std.), Non-molded Class A and Potted Class F or Class H (Opt.)
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).
Housing: Grommet and 1/2" NPT conduit - many options 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 23 1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE CONDUIT CONNECTION — MODEL 23
1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE CONDUIT CONNECTION

Technical drawing — MODEL 23 1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE CONDUIT CONNECTION — MODEL 23
1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE CONDUIT CONNECTION

Technical drawing — MODEL 23 MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE CONDUIT CONNECTION — MODEL 23
MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE CONDUIT CONNECTION

Technical drawing — MODEL 23 METERING 3WNC EXHAUST TO ATMOSPHERE CONDUIT CONNECTION — MODEL 23
METERING 3WNC EXHAUST TO ATMOSPHERE CONDUIT CONNECTION

Series 20 General Purpose Valves DIN

Technical drawing — MODEL 23 1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE DIN STYLE COIL — MODEL 23
1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE DIN STYLE COIL

Technical drawing — MODEL 23 1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE DIN STYLE COIL — MODEL 23
1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE DIN STYLE COIL

Technical drawing — MODEL 23 MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE DIN STYLE COIL — MODEL 23
MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE DIN STYLE COIL

Technical drawing — MODEL 23 METERING 3WNC EXHAUST TO ATMOSPHERE DIN STYLE COIL — MODEL 23
METERING 3WNC EXHAUST TO ATMOSPHERE DIN STYLE COIL

Series 20 General Purpose Valves Grommet

Technical drawing — MODEL 23 1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE GROMMET WITH LEADS — MODEL 23
1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE GROMMET WITH LEADS

Technical drawing — MODEL 23 1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE GROMMET WITH LEADS — MODEL 23
1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE GROMMET WITH LEADS

Technical drawing — MODEL 23 MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE GROMMET HOUSING WITH LEADS — MODEL 23
MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE GROMMET HOUSING WITH LEADS

Technical drawing — MODEL 23 METERING 3WNC EXHAUST TO ATMOSPHERE GROMMET HOUSING WITH LEADS — MODEL 23
METERING 3WNC EXHAUST TO ATMOSPHERE GROMMET HOUSING WITH LEADS

Series 20 General Purpose Valves Yoke Leads

Technical drawing — MODEL 23 1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE MOLDED COIL WITH YOKE — MODEL 23
1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE MOLDED COIL WITH YOKE

Technical drawing — MODEL 23 1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE MOLDED COIL WITH YOKE — MODEL 23
1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE MOLDED COIL WITH YOKE

Technical drawing — MODEL 23 MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE YOKE WITH LEADS — MODEL 23
MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE YOKE WITH LEADS

Technical drawing — MODEL 23 METERING 3WNC EXHAUST TO ATMOSPHERE MOLDED COIL WITH YOKE — MODEL 23
METERING 3WNC EXHAUST TO ATMOSPHERE MOLDED COIL WITH YOKE

Series 20 General Purpose Valves Yoke Spades

Technical drawing — MODEL 23 1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE YOKE WITH SPADE TERMINALS — MODEL 23
1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE YOKE WITH SPADE TERMINALS

Technical drawing — MODEL 23 1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE YOKE WITH SPADE TERMINALS — MODEL 23
1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE YOKE WITH SPADE TERMINALS

Technical drawing — MODEL 23 MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE YOKE WITH SPADE TERMINALS — MODEL 23
MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE YOKE WITH SPADE TERMINALS

Technical drawing — MODEL 23 METERING 3WNC EXHAUST TO ATMOSPHERE YOKE WITH SPADE TERMINALS — MODEL 23
METERING 3WNC EXHAUST TO ATMOSPHERE YOKE WITH SPADE TERMINALS

Series 20 General Purpose Valves Conduit/Bracket Connection

Technical drawing — MODEL 23 1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION — MODEL 23
1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION

Technical drawing — MODEL 23 1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION — MODEL 23
1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION

Technical drawing — MODEL 23 BODY OPTION "E" 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION — MODEL 23
BODY OPTION "E" 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION

Technical drawing — MODEL 23 MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION — MODEL 23
MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION

Technical drawing — MODEL 23 METERING 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION — MODEL 23
METERING 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION

Series 20 General Purpose Valves Grommet/Bracket Connection

Technical drawing — MODEL 23 1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE GROMMET/BRACKET WITH LEADS — MODEL 23
1/4-18 NPT 3WNC EXHAUST TO ATMOSPHERE GROMMET/BRACKET WITH LEADS

Technical drawing — MODEL 23 1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE GROMMET/BRACKET WITH LEADS — MODEL 23
1/8-27 NPT 3WNC EXHAUST TO ATMOSPHERE GROMMET/BRACKET WITH LEADS

Technical drawing — MODEL 23 MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE GROMMET/BRACKET HOUSING WITH LEADS — MODEL 23
MANUAL OVERRIDE 3WNC EXHAUST TO ATMOSPHERE GROMMET/BRACKET HOUSING WITH LEADS

Series 20 Operators Conduit

Technical drawing — MODEL O23 3WNC EXHAUST TO ATMOSPHERE CONDUIT CONNECTION — MODEL O23 3WNC EXHAUST TO ATMOSPHERE CONDUIT CONNECTION

Series 20 Operators DIN

Technical drawing — MODEL O23 3WNC EXHAUST TO ATMOSPHERE DIN STYLE COIL — MODEL O23 3WNC EXHAUST TO ATMOSPHERE DIN STYLE COIL

Series 20 Operators Explosion Proof

Technical drawing — MODEL O23 3WNC EXHAUST TO ATMOSPHERE EXPLOSION PROOF — MODEL O23 3WNC EXHAUST TO ATMOSPHERE EXPLOSION PROOF

Series 20 Operators Grommet

Technical drawing — MODEL O23 3WNC EXHAUST TO ATMOSPHERE GROMMET WITH LEADS — MODEL O23 3WNC EXHAUST TO ATMOSPHERE GROMMET WITH LEADS

Series 20 Operators Yoke Leads

Technical drawing — MODEL O23 3WNC EXHAUST TO ATMOSPHERE MOLDED COIL WITH YOKE — MODEL O23 3WNC EXHAUST TO ATMOSPHERE MOLDED COIL WITH YOKE

Series 20 Operators Yoke Spades

Technical drawing — MODEL O23 3WNC EXHAUST TO ATMOSPHERE YOKE WITH SPADE TERMINALS — MODEL O23 3WNC EXHAUST TO ATMOSPHERE YOKE WITH SPADE TERMINALS

Series 20 Operators Conduit/Bracket Connection

Technical drawing — MODEL O23 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION — MODEL O23 3WNC EXHAUST TO ATMOSPHERE CONDUIT/BRACKET CONNECTION

Series 20 Operators Grommet/Bracket Connection

Technical drawing — MODEL O23 3WNC EXHAUST TO ATMOSPHERE GROMMET/BRACKET HOUSING WITH LEADS — MODEL O23 3WNC EXHAUST TO ATMOSPHERE 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 23 - Exhaust to Atmosphere

3-Way Normally Closed Valve (Exhaust to Atmosphere)

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)

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