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Specifications :
Material:
Body…………..…..Carbon Steel / Stainless Steel (see charts)
Ball……………..…….……………...Type 440C Stainless Steel
Springs…………..…………….………………….Stainless Steel
Maximum Operating Temperature:….……...…..4000F (2040C)
Lubricant:………………Oil or Grease (Petroleum or Synthetic)

Operation (Double Ball Check Valves) :
Flow entering the check valve creates pressure on the smaller diameter ball. If the pressure created is higher than the opposing force of the spring, the smaller ball is moved off its seat. This allows flow to create a similar pressure and action on the larger ball and spring. Flow continues on to the outlet of the check valve. If flow is reversed, flow force and spring cause the large ball to be reseated. Any leakage around the large ball is blocked by the smaller ball that is firmly seated by spring.

Double Ball Check Valve Applications:
Premier double ball check valves are designed for high pressure applications where reverse flow/leakage must be kept to a minimum. Typical applications include engine, pump and compressor cylinder/ packing lubrication and hydraulic systems. A relatively stiff spring in these check valves serves to increase the reliability of the circuit.

Document No.: PLS-1010-A
Premier
PREMIER LUBRICATION SYSTEM - 14105 Packard Street - Houston, Texas 77040 USA
Check Valves
Telephone (713) 462-5255 - Fax (713) 462-7919 - E-mail: sales@premier-lubrication.com - Website: www.premier-lubrication.com

Part No. Max Psi Inlet Outlet Material
90501 3000 1/8” Npt 1/8” Npt Steel

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Document No.: PLS-1010-A
Premier
PREMIER LUBRICATION SYSTEM - 14105 Packard Street - Houston, Texas 77040 USA
Check Valves
Telephone (713) 462-5255 - Fax (713) 462-7919 - E-mail: sales@premier-lubrication.com - Website: www.premier-lubrication.com

Part No. Max Psi Inlet Outlet Material
90040 3000 1/4” Tube 1/8” Npt Steel
90329 3000 1/4” Tube 1/8” Npt Stainless

Part No. Max Psi Inlet Outlet Material
90043 3000 1/4” Tube Flared 1/8” Npt Steel

Part No. Max Psi Inlet Outlet Material
90287 6000 1/4” Tube Flared 1/8” Npt Steel

Part No. Max Psi Inlet Outlet Material
90336 3000 1/4” Npt 1/4” Npt Stainless

Part No. Max Psi Inlet Outlet Material
90731 3000 1/4” Tube 1/4” Npt Steel

In addition to the pictured Check Valves,
Premier manufactures other types and styles;
Call PREMIER. with your requirements!