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Pair of brass welding torch check valves with left and right hand threads

Harris

Harris 88-6CVT R&L Check Valve Set Brass 2 PC

SKU CH-QQZ9-PTQ5E MPN 88-6CVT

Welding torch check valve pair with brass and stainless steel bodies, 9/16-18 connections and left- and right-hand threads for fuel and oxygen

  • TypeDrain Components
  • MaterialHAWA
  • Brass body resists corrosion for long service life
  • Left and right hand threads fit fuel and oxygen lines
  • Check valves prevent dangerous reverse gas flow
  • Meets OSHA requirements for welding safety
  • Two piece set covers both torch connections

Brass Welding Torch Check Valve Set

The Harris 88-6CVT set supplies a left-hand and a right-hand check valve built from brass with stainless-steel internals. Both valves mount directly on the torch and accept fuel or oxygen through 9/16 in.-18 UNF connections. The pair meets OSHA compliance requirements for gas-flow safety.

For Torch-Mounted Fuel and Oxygen Lines

Welders who need to prevent reverse flow on both fuel and oxygen hoses at the torch will find the matching CGA 023 and CGA 022 inlets ready to install. Installers requiring a different mounting location, alternate thread direction or a single valve should look at other configurations.

9/16 in.-18 UNF Inlet and Outlet Threads

The decisive specification is the 9/16 in.-18 UNF thread size shared by both inlet and outlet on each valve. Confirm that your torch and hose fittings use this exact thread before purchasing.

Highlights

  • Brass body resists corrosion for long service life
  • Left and right hand threads fit fuel and oxygen lines
  • Check valves prevent dangerous reverse gas flow
  • Meets OSHA requirements for welding safety
  • Two piece set covers both torch connections

Specifications

TypeDrain Components
MaterialHAWA
BrandHarris
Model88-6CVT R&L

Questions about this item

Will the 9/16-18 UNF threads on this Harris 88-6CVT set mate with the B-size hose fittings on my older torch?

Yes, the set uses 9/16-18 UNF inlet and outlet threads with B-size hose fittings, matching the common torch connection standard used on many existing setups.

How can I confirm the check valves are sealing properly once installed?

Pressurise the system and apply leak-detect solution around each valve body; no bubbles indicate the brass and stainless-steel seats are holding pressure in both fuel and oxygen lines.

Does the two-piece package include both the left-hand fuel and right-hand oxygen valves, or must I buy them separately?

The box contains one left-hand thread valve for fuel (CGA 023) and one right-hand thread valve for oxygen (CGA 022); no additional parts are required for a standard torch connection.

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