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Vacuum Check Valves

Male NPT Check Valves (MNPT)

Our Male NPT Check Valves are available in sizes up to 12″ in Carbon Steel (Zinc Dichromate plated for added corrosion resistance), 316 Stainless Steel, Brass and Aluminum. Available elastomers include Buna N, EPDM, Viton, Silicon and Teflon. Valve internal components can be customized to fit your exact application requirements.

Full Port Male NPT Non-Return Valves

Our Full Port, Male NPT (MNPT) Check Valves provide more flow and lower pressure drops than conventional check valves. Our elastomer hinge check valve design takes performance to an entirely new level by eliminating the restrictive valve seat and substantially increasing the valve’s open area and flow coefficient (Cv). They are ideal for application in vacuum pumps, compressed air and gas systems as well as in water systems where low head loss and elimination of water hammer are desirable.

Male NPT Check Valves

Features & Benefits

Our Full Port, Male NPT Check Valves offer some impressive advantages.
These valves are suitable for any orientation including vertical up flow and downflow.

Fast Delivery:
We maintain an extensive inventory of valves, parts and components in a wide variety of materials so we can respond to your needs quickly. Valves are typically assembled and tested within 1 to 2 days after receipt of an order.

Male NPT Check Valve Diagram
  • Lowest Pressure Drop
  • High Flow Coefficient (Cv)
  • Easy to Install
  • USA Content
  • ARRA Compliant
  • Alleviates Water Hammer
  • Simple Installation
  • Variety of Configurations
  • Every Valve Tested
  • Performs well with VFD Pumping Systems
Male NPT Check Valves Dimensions
Male NPT Check Valves Table