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Brass inline ball valve with aluminum tee handle

Value Brand

Value Brand 1WMG8 3/8" FNPT Brass Ball Valve Inline

SKU CH-HQW4-EW6N7

A brass inline ball valve with 3/8" FNPT connections, full-port flow, 600 psi CWP rating, and PTFE seats for temperatures up to 365°F

  • Full-port design allows unrestricted flow
  • Brass body resists corrosion in water systems
  • Blowout-proof stem prevents accidental ejection
  • PTFE seats seal reliably up to 365°F
  • Rated 600 psi CWP for high-pressure lines

Brass Inline Ball Valve for Small-Bore Piping

This 3/8-inch FNPT brass ball valve is built for inline shut-off in residential and light-commercial plumbing. The two-piece, full-port body keeps flow restriction low while the blowout-proof stem adds safety during pressure spikes. An aluminium tee handle gives positive leverage for quick quarter-turn operation.

Pressure and Temperature Headroom

Rated at 600 psi CWP and 150 psi WSP, the valve handles typical cold-water services and low-pressure steam lines with ample margin. The PTFE seats and brass ball maintain a tight seal across a 0 °F to 365 °F range, so the same fitting can serve chilled-water loops and moderate hot-water circuits. Beyond the stated steam rating the seat material reaches its practical limit.

FNPT Thread Compatibility and Chemical Notice

Female NPT threads on both ends mate with standard 3/8-inch male pipe nipples or adapters, but the connection is limited to tapered-thread sealing methods such as tape or paste. California Proposition 65 warnings apply because the brass alloy contains substances identified by the state as carcinogens and reproductive toxins. Buyers needing lead-free certification or larger pipe sizes must select a different model.

How it compares

Measured against everything we stock in Faucet Valves & Replacement Parts, at today’s prices. Recalculated every night.

Price $5.99
Cheaper than about 96% of the 1,132 comparable items (median $54.99).

Specifications

Product
Brand nameZORO SELECT
Product typeOther

Questions about this item

Will this 3/8" FNPT brass ball valve thread directly onto the existing copper adapters I already have installed?

The valve has FNPT x FNPT connections sized for 3/8 inch pipe threads, so it mates with any matching male NPT fittings on your current plumbing.

How can I verify the blowout-proof stem is functioning correctly after I install the valve?

Operate the aluminium tee handle through its full range; the stem should stay securely retained while the brass ball rotates smoothly between open and closed positions.

Does the package include pipe thread sealant or do I need to buy PTFE tape separately?

The box contains only the valve itself; you will need to supply thread sealant or tape for the FNPT connections.

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