Eco Valve, Clearview Calibration Cylinders, and CS Corporation Stops

Welcome to Eco Valve's e-commerce store.

We offer a variety of metering pump accessories and are currently in the process of updating our online store. If you see something on our main website ( that is not listed here, please contact us for a quote.


ECO Valve Back Pressure / Pressure Relief Valves

Back Pressure / Pressure Sustaining / Anti Syphon:  ECO Valve is a diaphragm style two port back pressure/pressure sustaining valve designed to provide and control a continuous pressure on the discharge side of a positive discharge style pump, such as metering pumps. ECO Valve assists with the proper seating of the valve check assembly and accurate filling of the pump housing chamber for a more efficient and accurate running pump.

Pressure Relief:  ECO Valve is also designed to be used as a two port off line pressure relief valve to help protect the discharge side of positive displacement pumps from system failure due to over pressure caused by a blockage or accidental valve closure on the downstream side of the pump.  

  • available in PVC, CPVC, PVDF, polypropylene and 316L stainless steel
  • long life single sealing diaphragm (laminated PTFE, Viton, EPDM or PVC)
  • field adjustable pressure setting 7 - 150 PSIG (48 - 1034 kPa)
  • CPVC bonnet for higher temperatures and chemical resistance rating
  • no moving parts in wetted chamber; superior choice for "dirty" fluid applications
  • high flow capacity with lower pressure drop
  • sizes 1/4" to 4" (8 DN to 100 DN)
  • configured for gauge port in either flow direction (on upstream side of valve)
  • available in 10 different connection configuration: threaded, socket, union and flanged
Download ECO Valve Brochure (pdf)

Clearview Calibration Cylinders: Clearview calibration cylinders have been developed for the accurate calibration of metering pumps.

Available in polypropylene, PVC and glass

  • exceptional clarity
  • break resistant
  • threaded, socket or flanged
  • removable "O" ring sealed top
  • float level indicator
  • PVC has dual scale USGPH and ml
  • PVC sizes 100- 20000 ml
  • POLY and glass sizes 100 -4000 ml
  • glass cylinders maintenance friendly and fully field serviceable

Download ClearView Calibration Cylinders Brochure

CS Corporation Stops: CS Corporation Stops have been designed to inject chemical into the center stream of the flow.

  • available in 7 materials of construction: brass, PVC, CPVC, PVDF, Stainless Steel, Alloy 20 and Hastelloy C
  • quill diameter sizes range from 1/4" (DN 8) to 2 1/2" (DN 65)
  • sizes available 1/2" (DN 15) to 3" (DN 75)
  • threaded, socket or flanged connections
  • Contact factory for pricing of corporation stops


 Download CS Corporation Stops Brochure