4 inch Brass Anti Reverse Valve for Vacuum pump NPT with ABS inserts

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Mounts before vacuum pump on  intake to keep vacuum pump from going backwards at shutdown.
  • Fits 4 inch pipe
  • NPT or comes with ABS Inserts to use with Fernco Rubber couplings (recommended to reduce vibration)
  • Brass body
  • Nylon insert
  • Rubber seal
One way valve.  must be installed vertically in correct orientation
Works with Sutorbilt, Gardner Denver, Kaizer, Kaiser, RBS vacuum systems
ARV 400 - VCBL1-400
Made in Italy