Butterfly Valve for Gas and Air BVG

The butterfly valves BVG, BVH, BVHM and BVHS are designed to adjust volumes of gas, cold and hot air, and flue gas on various appliances and flue gas lines. They are designed for control ratios up to 1:10, and with the mounted actuator IC 20 or IC 40 they are suitable for regulating flow rates for modulating or stage-controlled combustion processes.

Flow rates can be set and fixed using a lever, for example to limit the high-fire rate on the burner. A scale indicates the set angle of opening.

The BVG is a butterfly valve with reduced nominal diameter (reduced by one or two nominal sizes) and can be used to achieve higher control accuracy. This will mean that complex reducing fittings will no longer be required.

Features

• For gas, air, hot air and flue gas
• Low leakage rate and pressure loss
• High control accuracy
• Reduced nominal diameters
• Can be mounted directly onto the actuators IC 20 or IC 40
• Suitable for intermittent operation
• Low-maintenance operation
• EC type-tested and certified

	Documentation Manufacturer's Product Brochure Manufacturer's Operating Instructions Manufacturer's Technical Sheet
	Ordering Information Model Bore Diameter Max inlet pressure Connection Fitting Price (US List) Order Now BVG 40TW05 1½" 500 mbar (7.25 psig) between two ANSI flanges (1½") $206 BVG 50TW05 2" 500 mbar (7.25 psig) between two ANSI flanges (2") $219 BVG 65TW05 2½" 500 mbar (7.25 psig) between two ANSI flanges (2½") $238 BVG 80TW05 3" 500 mbar (7.25 psig) between two ANSI flanges (3") $270 BVG 100TW05 4" 500 mbar (7.25 psig) between two ANSI flanges (4") $290 BVG 40/32TW05 1¼" (reduced bore) 500 mbar (7.25 psig) between two ANSI flanges (1½") $277 BVG 50/40TW05 1½" (reduced bore) 500 mbar (7.25 psig) between two ANSI flanges (2") $309 BVG 65/50TW05 2" (reduced bore) 500 mbar (7.25 psig) between two ANSI flanges (2½") $332 BVG 80/65TW05 2½" (reduced bore) 500 mbar (7.25 psig) between two ANSI flanges (3") $379 BVG 100/80TW05 3" (reduced bore) 500 mbar (7.25 psig) between two ANSI flanges (4") $407 BVG 40/25TW05 1" (2 × reduced bore) 500 mbar (7.25 psig) between two ANSI flanges (1½") $277 BVG 50/32TW05 1¼" (2 × reduced bore) 500 mbar (7.25 psig) between two ANSI flanges (2") $309 BVG 65/40TW05 1½" (2 × reduced bore) 500 mbar (7.25 psig) between two ANSI flanges (2½") $332 BVG 80/50TW05 2" (2 × reduced bore) 500 mbar (7.25 psig) between two ANSI flanges (3") $379 BVG 100/65TW05 2½" (2 × reduced bore) 500 mbar (7.25 psig) between two ANSI flanges (4") $407 BVA models are no longer sold - the BVG replaces all BVA parts. BVG valves are rated for both gas and air. Accessories Model Description Price (US List) Order Now BVG ACC 01 Adapter set BVG with square shaft /B $65 BVG ACC 02 Adapter set BVG with free shaft end /B $63 BVG ACC 03 Adapter set BVG with manual adjustment /B $54
	Applications Click on images for close-up view. BVG, lambda correction If the burner is to be operated with excess gas or air for reasons of the process operation, the butterfly valve BVG can be used to correct the lambda value. The butterfly valve with manual adjustment is used to adjust the high-fire rate.
	Specifications General Types of Gas: Natural gas, town gas, LPG and other non-aggressive fuel gas Construction materials: AlSi Valve disc: Aluminium Drive shaft: Stainless steel Seals: HNBR Inlet pressure pe: max. 500 mbar (7.25 psi) Pressure differential between inlet pressure pe and outlet pressure pa: max. 150 mbar (2.16 psi) Medium temperature: -20 to 60 °C (-4 to +140 °F) Ambient temperature: -20 to +60 °C (-4 to +140 °F) Certification: EC type-tested and certified pursuant to Gas Appliances Directive (90/396/EEC) on the basis of EN 13611/EN 161. Maintenance cycles: We recommend a function check once a year.