4000 Series Ball poppet check valves improve cracking and reseals reliability by reducing the likelihood that the poppet will stick in the valve seat.

Specifications

• Pressure: Up to 6000 psig  (413 bar)
• Temperature: Up to 350° F (176° C)
• Body Materials: 316 SS
• Cracking Pressures: 1/3 to 50 psig (0.023 to 3.44 bar)
• Seat Material: FKM
• Ball Material: 316SS, PCTFE
• End Connections: Duolok, Griplok, Unilok, MNPT, FNPT
• Sizes: 1/8 to 3/4
• Orifices: 0.09, .019, 0.28 in.

CH Series check valves offer reliable cracking and resealing in CNG fueling stations, sampling systems, natural gas vehicles and other high-pressure, high-cycle and high-flow applications requiring reliable cracking and resealing in high-pressure and high-flow applications.

Specifications

• MAWP: Up to 6000 psig (413 bar)
• Temperature Range: -40 to 400° F (-40 to 204° C)
• Flow Coefficient: up to 3.25
• Materials: 316 Stainless Steel, Other materials available
• Cracking Pressures: 1/3 to 100 psig (0.023 to 6.89 bar)
• Highly durable metal to metal seal
• End Connections: Tube fitting, MNPT, FNPT, Male and Female BSPT
• ECE R110 Approved

Options
Our website contains the most popular CH Series Check Valve configurations - more configurations are available.  To specify other configurations, please contact SSP Customer Service.  Special ordering instructions for the options below are included in the CH Series Catalog.

Cracking Pressures
(Non-standard items are in bold.  Call for availability)

• 1/3
• 1
• 5
• 10
• 20
• 25
• 50
• 75
• 100

O-ring Materials
SSP offers the following O-ring materials.

• FKM (Standard)
• NBR
• NBR3 - Low-temperature Nitrile
• EP
• FFKM

Tube Fitting End Connections
SSP offer three tube fitting designs. 

• Duolok 2-ferrule end connections (Standard).
• Unilok single-ferrule end connections
• Griplok dual ferrule end connections