2010B / 2020B Relief Valve
Varec 2010B/2020B Series Pressure Vacuum Relief Valve protects anaerobic digesters against physical damage caused by routine increases in internal pressure or vacuum.

220 Roof Manhole Cover
The Varec 220 Series Roof Manhole or Entrance Hatch Covers are used on digester covers or roofs to allow for quick and easy personnel access during cleaning or maintenance of the digester.

221P / PV Emergency Access Relief Manhole Cover
Tank roof vents are fitted to low pressure storage tanks containing non-volatile products where vapor conservation is unnecessary.

2557 Limit Switch Assembly
The Varec Model 2557 Limit Switches are designed to mount directly to the Varec Model 2500.

2592 Cover Position Indicator
The Varec 2592 Series Cover Position Indicator is designed for use with vertically- guided or spirally-guided floating digester and gas storage/holder covers.

42 Gauge Hatch Cover
Varec 42 Series are installed on tanks to provide access for gauging, temperature measurement or sampling. The Hatch Covers are provided with a lockdown device that allows for a gas-tight seal up to 3 psig [20.7 kPa].

4310 Gauge Hatch Cover
The Varec 4310 Series Sampling and Gauging Hatch Covers are designed to provide quick access for product gauging, temperature measurement or sampling. They are installed on tank roofs or roof flanges.

5000 / 5010 Flame Arrester
Available in a wide range of sizes and materials, this valve is suitable for most common applications encountered in petroleum, chemical, and petrochemical tank farms.

5810B / 5820B Flame Arrester
The Varec 5810B/5820B Series Relief Valve and Flame Arrester is a combination of the Varec 2010B/2020B Series Pressure and Vacuum Relief Valve and the Varec 5000 Series Flame Arrester.

8200 Current Output Transmitter
The Varec Model S200 Current Output Transmitter is a precision analog instrument designed to mount directly to Varec's 2500 Series Automatic Tank Gaugeheads, 2592 Series Cover Position Indicators, and provide a 4-20 mA or 10-50 mA signal which varies indirect proportion to the liquid 1cvel.