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Varec Biogas

Varec (VApor RECovery Specialty Company) began business in the 1930's at its manufacturing plant in Compton, California. Varec was there in the infancy stage of the biogas market in the early 1950's. From the onset, Varec's focus was to deliver Biogas Handling products that suited customers' specific requirements, even if it meant creating the product off the drawing board. Varec initially sold direct to end-users and in the 1970's instituted a Sales Representative Network that catered to Municipal Wastewater Treatment Plants. A select number of Sales Representatives in the United States helped Varec acquire approximately 90% installed base from the 2,500 Wastewater Treatment Plants that utilize Anaerobic Digesters for Biosolids Treatment built between the mid-60's to late 70's. Today, Varec Biogas is 100% dedicated in providing total solutions to the biogas market. In February, 2003, Westech Industrial Inc. acquired the biogas portion of the Varec business from Tyco Valves and Controls, LP Inc.

Limit Switch Assembly

Varec Biogas 2557 Limit Switch Assembly

The Varec Model 2557 Limit Switches are designed to mount directly to the Varec Model 2500. The cam operated switches can be used to activate alarms or relays at any level selected by the user. The Model 2557 bolts directly to the back of the Model 2500 Gaugehead or to the Model 2520 High Pressure Gauge fitted with a Model 2581 Oil Tight Adapter. Adapters are also available for mounting to other float gauges. When used with the Model 6700 Indicator, the Model 2557 is bolted to the Elbow Drive Assembly located at the top of the tank. The Elbow Drive may also be used with the Model 2500 and the 2557 used as secondary output.



  • Mounts Directly to Model 2580 Gaugehead
  • Mounts to Model 6700 with elbow drive accessory kit
  • Two, four or six SPDT cam operated switches
  • UL/CSA approved/certified actuates alarms or relays
  • Cast aluminum enclosure with O-ring seal
  • Switches operable in any desired sequence
  • Independent adjustment of each switch in unit