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Bronze float valve with transparent components, one-inch pipe mount

Watts

Watts ST1000 Float Valve 1 In Bronze Pipe Mount Transparent

SKU CH-RQH3-NCPVW

A bronze float valve with 1-inch MNPT connection rated for 125 psi and 180°F maximum

  • ColorTransparent
  • Bronze body withstands 125 psi maximum pressure
  • Operates up to 180°F for hot water systems
  • Delivers 100 gpm flow at 50 psi pressure
  • Provides 150 gpm flow at 100 psi pressure
  • 1/4-20 brass rod threads ensure secure float attachment

Watts ST1000 Float Valve 1 In Bronze

The Watts ST1000 is a bronze float valve with a 1-inch MNPT threaded outlet and bulkhead mounting. It suits plumbing systems that need automatic liquid-level control in tanks or reservoirs. The brass rod uses 1/4-20 threading for reliable actuation. Installers who want a direct pipe-mounted valve for water supply lines will find it matches standard NPT threads.

Bronze body with transparent finish

The valve body is cast bronze and the unit has a transparent color finish. A bulkhead mounting style lets the valve sit flush against a tank wall or panel with the threaded outlet passing through. Brass rod material resists corrosion during repeated movement. The 1-inch MNPT connection fits common pipe fittings without adapters, simplifying day-to-day installation and maintenance.

Pressure and temperature limits

Maximum working pressure is 125 psi and maximum temperature is 180 degrees F. At 50 psi the valve delivers 100 gpm, and at 100 psi it delivers 150 gpm. Systems that exceed either pressure or temperature rating need a different valve. Buyers who require higher flow at lower pressure or operation above 180 degrees F cannot use this model.

Highlights

  • Bronze body withstands 125 psi maximum pressure
  • Operates up to 180°F for hot water systems
  • Delivers 100 gpm flow at 50 psi pressure
  • Provides 150 gpm flow at 100 psi pressure
  • 1/4-20 brass rod threads ensure secure float attachment

Specifications

ColorTransparent
BrandWATTS

Questions about this item

What thread standard does the 1 in MNPT connection use?

The valve uses a 1 in MNPT threaded outlet that matches standard NPT pipe threads for a direct bulkhead mount.

What clearance is needed for the 1/4 in.-20 brass rod?

The rod has a 1/4 in.-20 thread; allow enough space for the rod to move freely through the bulkhead without binding.

How do I set the float level during installation?

Thread the rod into the valve body, secure the float, then adjust the rod so the valve shuts off at the desired water level before tightening the locknut.

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