2-WAY NORMALLY OPEN Valve
Complete range of valves particularly suitable when cost and size are major factors. The bodies are constructed of brass (stainless steel is optional). Air, water, and other fluids compatible with standard Buna seals. Hot water, steam, gasoline, and many oils require special seal materials.
- Brass body with stainless steel internal construction.
- A smaller, cost effective alternative to any industry standard.
| MAX. OPER. PRESS. DIFF. | ORIFICE SIZE | CV FACTOR | VALVE NUMBER GROMMET HOUSING | CONDUIT HOUSING | |
|---|---|---|---|---|---|
| AC | DC | 1/8 NPT PORTS | 1/8 NPT PORTS | ||
| 300 | 300 | 1/32 | .024 | 31G5XGM | 31G5XCM |
| 175 | 175 | 3/64 | .052 | 31H5XGM | 31H5XCM |
| 125 | 125 | 1/16 | .095 | 31J5XGM | 31J5XCM |
| 75 | 75 | 3/32 | .160 | 31K5XGM | 31K5XCM |
Ordering Information:
When ordering valves or repair packs add voltage and frequency to complete valve number. for examples: valve (31K5XGM 120/60) repair pack (K31KDX 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 (O31K5DGM 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 30 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 — 8.0 Watts DC — 8.0 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
- Internal Components
- Stainless Steel. Copper – AC Only.
- Elastomers
- Nitrile (Buna) (Std.) Many other elastomers available*
- Orifice Diameter
- See table above.
- Porting
- Standard 1/8" 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: 0.75 lb Conduit Valve: 0.81 lb
- Repair Packs
- See table above.
- Options
- Alternate Port Locations, Metering, Manual Override, Alternate Elastomers, Spade Terminal Coil
Series 30 General Purpose Valves Conduit
MODEL 31
2WNO CONDUIT CONNECTION
Series 30 General Purpose Valves DIN
MODEL 31 1/8-27 NPT
2WNO
DIN STYLE COIL
Series 30 General Purpose Valves Grommet
MODEL 31
2WNO GROMMET WITH LEADS
Series 30 General Purpose Valves Grommet/Bracket Connection
Minimum quantity required. Please contact sales for additional assistance.
sales@peterpaul.com 
MODEL 31 1/8-27 NPT
2WNO
GROMMET/BRACKET WITH LEADS
Series 30 General Purpose Valves Conduit/Bracket Connection
Minimum quantity required. Please contact sales for additional assistance.
sales@peterpaul.com 
MODEL 31 1/8-27 NPT
2WNO
CONDUIT/BRACKET CONNECTION
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.