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:


Standard Flanged Mid-Range High Pressure High Temperature More Info

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
  • CPVC Corzan molded top on most models
  • 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.

Standard Top Valve Instruction Manual

Standard Top Valve Exploded View

Top Valve Back Pressure Valve in CPVC

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.

Top Valve Flanged Valve in PVC

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.

Mid-Range Instruction Manual

Top Valve Back Pressure Valve in PVDF Mid-Range Pressure

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 Pressure Instruction Manual

High Pressure Exploded View

Top Valve High Pressure Valve in Stainless Steel

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 factorys hould be consulted to ensure proper selection
  • Valves available in various configurations that include threaded, socket, and flanged

High Temperature Instruction Manual

High Temperature Exploded View

Top Valve High Temperature Valve in Stainless Steel

More Information on Top Valve

Top Valve Brochure

Detailed Ordering Information

Application Worksheet

Instruction Manuals

Standard Instruction Manual

High Temperature Instruction Manual

High Pressure Instruction Manual

Mid-Range Instruction Manual

Price Lists

Top Valve Canadian Price List 2017

Top Valve USA Price List 2017

Parts Catalogue CAD Price List 2017

Parts Catalogue USA Price List 2017