User Manual

For Commercial, Industrial and Agricultural Applications
ES-HDV
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ST-500
Series 375, 500,
750, 1000, 1250,
1500 and 2000
Heavy Duty Mechanical Float
Valves (with Threaded or Non-
Threaded Outlets)
Sizes:
3
⁄8" to 2" (10 to 50mm)
Series 375, 500, 750, 1000, 1250, 1500 and 2000 Heavy Duty
Mechanical Float Valves are used in commercial, industrial, and
agricultural applications for controlling high capacity water flow.
This series is ideal for use in air conditioning, refrigeration, and
irrigation systems. These connectors can be tank wall-mount-
ed. All valves in the series have bronze body construction with
machine flanges on the inlet side (sizes 1” to 2” (25 to 50mm)
have female NPT pipe threaded inlet connections), and male
straight-pipe threaded for locknut on the outlet side. The con-
nectors have serrated arms for easy adjustment of water level,
bronze long and short arms, replaceable seals, and no-jam
single lever action.
Features
•Pipe-threadedforpipeconnectionsand
straight-pipe threaded for locknut
•Machinedflangeforsupportagainsttankwall
•Allbronzebodies
•Serratedarmsforquickeasyadjustmentofwaterlevel
•Hightensilemanganesebronzelongandshortarms
•Nojamsingleleveraction
•Replaceableseals
Pressure
Maximum Working Pressure: 165psi (11.4 bar)
Maximum Working Temperature: 180°F (82°C)
Item Qty. Description Material
1 1 Body Bronze
2 1 Plunger Brass
3 1 Long arm Bronze
4 1 Short arm Bronze
5 1 Plunger tip Buna-N
6 1 Leather ring –
7 1 Thumb screw Brass
8 1 Cotter pin Stainless Steel
Materials
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.