180 Series Double Port Pressure Regulators The 180 series regulators are designed for use on vapor recovery systems where sensitive control at low pressures is required.		2010B/2020B Pressure and Vacuum Relief Valve The Varec 2010B/2020B protects tanks from damage or deformation, and minimizes emissions to the environment, as well as loss of product due to evaporation.		220 Series Roof Manway Cover The 220 Series is designed for use on tanks where quick and easy personnel access is desired.
221 Series Emergency Pressure Relief Manway Covers The 221 Series is designed to provide emergency venting of low pressure storage tanks and vessels.		2440 and 2450 Series Pressure and Vacuum Relief Valve 2440 and 2450 Series are used on liquid storage tanks, vessels, and vapor recovery systems where excess pressure or vacuum may cause damage or permanent deformation and leakage of product must be minimized.		3500B, 3600B and 3650B Series Vacuum and Pressure Relief Valves The 3500B, 3600B, and 3650B vacuum breakers are designed to provide superior seat tightness while protecting liquid storage vessels, vapor recovery systems, and process systems from excess vacuum.
4110A, 3610 and 3660 Series Vacuum Relief Valves 4110A, 3610 and 3660 Series, used to protect tanks and vessels from damage or deformation caused by changes in process pressure and vacuum conditions.		42 Series Sampling and Gauging Hatch Cover The 42 Series is designed to provide quick access to tanks for product gauging, temperature measurement and sampling.		4210A Series Emergency Pressure Vent and Manway Cover The 4210A Series is designed to provide emergency venting of low pressure storage tanks and vessels.
4310 Series Sampling and Gauging Hatch Cover 4310 Series is designed to provide quick access for product gauging, temperature measurement or sampling.		5000 and 5010 Series Flame Arresters The 5000 and 5010 Series end-of-line flame arresters are used in gas piping systems, petroleum storage tank roofs and digester covers to prevent the propegation of a flame into the system.		5400A Series Flame Arrester The 5400A Series, Group "D" end-of-line flame arrester is designed to prevent the propagation of flames into a storage vessel.
5700 Series Detonation Flame Arresters Varec 5700 Series Detonation Flame Arresters meet industry demand for the arrest of in-line, bi-directional flame propagation within gas piping systems.		5810B and 5820B Series - Relief Valve with Flame Arrester The 5810B/5820B Series Relief Valve and Flame Arrester is a combination of the 2010B/2020B Series Pressure and Vacuum Relief Valve and the 5000 Series Flame Arrester.		5910B and 5920B Series - Relief Valve with Flame Arrester The 5910B/5920B Series Relief Valve and Flame Arrester is a combination of the 2010B/2020B Series Pressure and Vacuum Relief Valve and the 5400A Series Flame Arrester.
7000 Series Mushroom (Free) Vents 7000 Series free vents are typically used on atmospheric tanks which contain non-volatile liquids.		7100B Series Pressure Relief Valve The 7100B Series is designated to protect low pressure storage tanks and systems from being over pressured.		711 Series Pressure Relief Vent The 711 Series is designed to protect low and medium pressure storage tanks, gas headers, process vessels and waste gas collection systems from being over pressured.
7700 Series Floating Suction Unit 7700 Series, designed for use on storage tanks where there is a need to draw off product from just below the surface liquids stored in bulk.		In-Line Detonation Flame Arresters Manufactured by Westech Quenching of the flame is accomplished by using a device which breaks the flame into small 'flamelets' that are passed through small flame channels in the arrester element.