Back Pressure Valves and Pressure Relief Valves
The Top Valve line of diaphragm style Back Pressure and Pressure Relief valves was designed to ensure accurate pumping and protect your pipeline.
Standard Features include:
- Completely adjustable pressure range to 350 PSIG
- Built-in air release to reduce priming difficulties
- Available in sizes 1/4" through 2"
- 8 different materials of construction
- Four different connection styles
- Competitive 3-year warranty
- Top Valve now certified to NSF/ANSI-61
Standard Top Valve
Standard features:
- Available in 7 sizes, ranging from 1/4" to 2" NPT or BSPT
- 8 materials, including PVC, CPVC Corzan, Polypropylene, PVDF, PTFE, Stainless Steel, Alloy 20, and Hastelloy C276
- Polycarbonate molded top on standard models, -50 series and above.
- Back Pressure (anti-syphon) valve is a two-port flow through device, factory set at 50 PSIG (field adjustable 15-150 PSIG)
- Pressure Relief valve is a three-port flow through design, factory set at 50 PSIG (field adjustable 15-150 PSIG)
- Pressure Relief valve is also available in a two-port, off-line style (model P2)
- Standard diaphragm material is PTFE laminated and EPDM backed (3-year warranty); optional materials available
- Locking pressure adjustable handle is standard on all valves
- Gauge port option available
- CRN certification available on a variety of valves. Please contact us for price and availability.
Flanged
Available in Thermoplastic and Metallic
Our Flanged Top Valves in Plastic incorporate 150# socket-welded flanges on PVC and CPVC valves, and threaded 150# companion flanges on polypropylene, PVDF, and PTFE valves.
Flanges sizes from 1/4" to 2" available.
Our Flanged Top Valves in Metal incorporate 150# socket-welded flanges on fully metal or metal body-only valves.
These flanged valves are also available in our High Temperature and High Pressure series.
Mid-Range
Our Mid-Range valve line offers higher pressure rated thermoplastic valves in PVC, CPVC Corzan, and PVDF.
They are rated to 232 PSIG / 16 BAR.
High Pressure
Our High Pressure series is available only with metallic bodies. Its features include:
- Pressure range from 50 to 350 psig
- This series includes a standard aluminum metallic top, viton diaphragm, and high pressure spring, with three standard choices of metallic wetted bottom
- Standard body materials available are 316L stainless steel, Alloy 20, or Hastelloy C. Other metallic bodies are available upon request.
- Three styles available: BH Back Pressure 2-port design, PH Pressure Relief 3-port in-line design, or P2H Pressure Relief off-line design.
- Valves available in various configurations that include threaded, socket, and flanged
High Temperature
Our High Temperature series is designed for applications above 140°F / 60°C. Its features include:
- Temperature limit of this valve is dependent upon body material selection, to a maximum of 300°F (149°C)
- Standard body materials available are 316L stainless steel, Alloy 20, or Hastelloy C, all rated to the maximum temperature. Other metallic bodies available upon request.
- Option body materials available are CPVC Corzan and PVDF, however these have limited pressure versus temperature ratings, and the factory should be consulted to ensure proper selection
- Valves available in various configurations that include threaded, socket, and flanged
Union Style
Readily available stainless steel union-style connection for Top Valve ensures ease of installation and removal. Its features include:
- Available in 2 sizes, ranging from 1/4" to 1/2" NPT or BSPT.
- This series features a 316 Stainless Steel body, with a standard CPVC Corzan molded top. 316 Stainless Steel and Aluminum tops available upon request.
- Two styles available: BU Back Pressure 2-port design, and P2U Pressure Relief off-line design.
- Readily in stock stainless steel union style connections.
More Information on Top Valve
Instruction Manuals
High Temperature Instruction Manual
High Pressure Instruction Manual