Description
Materials
- Body and cover: polyester coated cast iron.
- Diaphragm retainer in and spring: stainless steel.
- Diaphragm: natural rubber; nylon fabric reinforced.
Features
- Sizes 2”, 3” threaded or flanged, 4”, 6”, 8”, 10”and 12” flanged.
- Flow ranges between 18 and 22500LPM.
- Maintains constant outlet pressure.
- Single chamber diaphragm operated.
- Single one moving part design.
Pressure – Temperature
- Max temp 82°C.
- Max shutoff head – 225 psi.
- Pressure ranges 2”:25 – 175psi.
- 3”-12”:15-150psi.
- Max differential pressure – 125psi.
- Min friction loss – 14psi (for low pressure applications the diaphragm spring can be removed, this can drop the friction loss to about 7psi).
Pressure – 30psi, pressure before valve is 42psi – friction loss through valve is 12psi.
The friction loss chart below is for fully open valves (example application; flow – 130gpm.