Proline 105-103NL Stop and Waste Valve Brass 1/2 in
A brass stop and waste valve with 1/2 in FNPT connections, 125 psi pressure rating and NSF/ANSI 372 and 61 certification
- Product typePipes, Valves & Fittings
- Brass body resists corrosion for long service life
- 1/2 in FNPT connections fit standard plumbing
- 125 psi rating handles typical residential pressure
- 140 °F maximum temperature suits hot-water lines
- Certified to NSF/ANSI 61 and 372 for safe drinking water
Brass Stop and Waste Valve for Residential Plumbing
This brass stop and waste valve controls water flow and allows system drainage through its integrated waste port. It is designed for residential plumbing installations where a 1/2 inch FNPT connection is required. The wheel handle provides manual operation for shut-off and draining tasks.
Verify Thread Size and Pressure Rating Before
Confirm that the existing piping uses 1/2 inch FNPT threads to match the valve connections. Ensure the system operating pressure does not exceed 125 psi and the water temperature stays below 140 degrees F. The valve meets ANSI B 1.20.1, ASME A 112.4.14, CSA B 125.14, NSF/ANSI 372 and NSF/ANSI 61 standards for potable water use.
Replaces Worn Gate Valves
This valve replaces older shut-off valves that lack a waste function, enabling seasonal draining or maintenance without draining the whole system. The upgrade is worth it when a drain point is needed at a specific fixture or branch line. It is not suited for applications requiring automated actuation or higher pressure ratings.
How it compares
Measured against everything we stock in Faucet Valves & Replacement Parts, at today’s prices. Recalculated every night.
- Price $9.99
- Cheaper than about 93% of the 1,132 comparable items (median $54.99).
Specifications
| Product | |
|---|---|
| Brand name | ZORO SELECT |
| Product type | Pipes, Valves & Fittings |
Questions about this item
Does the valve come with pipe fittings or do I need to buy 1/2 in FNPT adapters separately?
The valve has 1/2 in FNPT x FNPT connections; no fittings are included so you must supply compatible pipe or adapters.
Which standards apply to the 105-103NL model for potable-water use?
It meets NSF/ANSI 61 and NSF/ANSI 372 for drinking-water safety, plus ASME A 112.4. 14 and CSA B 125.14.
What does the 125 psi rating mean when the valve is installed in a household supply line?
The valve can handle up to 125 psi continuous pressure at temperatures up to 140 °F, matching typical residential supply conditions.
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