Premier Check Valves

Single Ball or Double Ball单球或双球止逆结构
Carbon Steel or Stainless Steel碳钢或不锈钢材料
Straight or Angle Type 直型和角型
Pressures to 8,000 PSI 压力可达8000PSI

?Part No. Max Psi Inlet Outlet Material
90023 8000 1/8” Npt 1/8” Npt Steel
90024 8000 1/4” Npt 1/4” Npt Steel
90254 8000 1/8” Npt 1/4” Npt Steel

90255 8000 1/4” Npt 1/8” Npt Steel
90025 8000 1/8” Npt 1/8” Npt Stainless
90026 8000 1/4” Npt 1/4” Npt Stainless
90291 8000 1/8” Npt 1/4” Npt Stainless
90290 8000 1/4” Npt 1/8” Npt Stainless

Part No. Max Psi Inlet Outlet Material
90104 8000 1/8” Npt 1/8” Npt Steel
90103 8000 1/4” Npt 1/4” Npt Steel
90112 8000 1/8” Npt 1/4” Npt Steel
90296 8000 1/4” Npt 1/8” Npt Steel
90105 8000 1/8” Npt 1/8” Npt Stainless
90106 8000 1/4” Npt 1/4” Npt Stainless
90297 8000 1/8” Npt 1/4” Npt Stainless
90108 8000 1/4” Npt 1/8” Npt Stainless

Part No. Max Psi Inlet Outlet Material
90033 8000 1/4” Tube 1/8” Npt Steel
90101 8000 1/4” Tube 1/4” Npt Steel
90034 8000 1/4” Tube 1/8” Npt Stainless
90109 8000 1/4” Tube 1/4” Npt Stainless

Part No. Max Psi Inlet Outlet Material
90107 8000 1/4” Tube 1/8” Npt Steel
90102 8000 1/4” Tube 1/4” Npt Steel
90110 8000 1/4” Tube 1/8” Npt Stainless
90111 8000 1/4” Tube 1/4” Npt Stainless

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

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

Operation (Double Ball Check Valves)
Flow entering the check valve creates pressure on the smaller diameterball. If the pressure created is higher than the opposing force of thespring, 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 pressureapplications 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.