Corken Compressors
Reftec International Systems, LLC. is now handling distribution of the Corken line of industrial compressors.
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Reftec has recently been certified by the American Bureau of Shipping (ABS).  Our products are being utilized in the cruise industry, naval applications as well as onboard tankers and freight liners.  Please contact us for your ocean going vessel HVAC needs. 


“As a service provider in the HVAC and Commercial Recovery Recycling Equipment repair industry for over 19 years, we realize the value of quality designed and well built equipment. Time is money and most recovery recycling equipment is built with the smaller systems in mind, primarily having portability be the prerequisite to build. Reftec has always been ahead of the curve with equipment designs that almost double the recovery rates of competitive units of there class with very little sacrifice in weight. A few pounds in weight is well worth the hours saved on a rooftop or chiller job.”

Sincerely, David Loika, Century Tool & Equipment

Item Details
ZV200 Bypass Valve
Item Name:
ZV200 Bypass Valve
Item #:

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The two-inch ZV200 is a low pressure build-up bypass valve designed for applications requiring protection for positive displacement pumps. Specifically designed for protecting pumps with capacities up to 250 gpm (946 L/min). The continuous internal bleed will assist in the operation of systems with "air" or "electric" operated internal valves. Typical applications include bobtail, transport and stationary loading and unloading of LPG, NH3 and other light liquids.


Used for both truck and stationary applications for loading and unloading.

Features and Benefits

  • Dimensionally interchangeable with commonly used two-inch bypas valves; no need to change piping configuration.
  • Ductile iron construction offers maximum strength for higher pressures.
  • Flow rates up to 250 gpm (946 L/min) at 120 psi (8.3 bar) differential.
  • Continuous bleed helps equalize pressure to assist remote operated internal valves.
  • Multiple spring options enable you to select the pressure required for your truck or stationary application.
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