Kromschroder BVG Butterfly Valves for Gas Flow Rate Control

Kromschroder's high accuracy BVG butterfly valves adjust and control flow rates for natural gas, town gas, LPG and other non-aggressive fuel gases. Flow rates can be set and fixed using a lever to limit the high-fire rate on the burner. A scale indicates the set angle of opening.

When paired with the mounted IC20 or IC40 valve actuator, they can also regulate flow rates for modulating or stage-controlled combustion processes.

Key Specifications

  • Applications with gas, air, hot air, and flue gas
  • Low leakage rate and pressure loss
  • Can be mounted directly to Kromschroder IC20 and IC40 actuators
  • Suitable for intermittent operation
  • EC type-tested and certified

Specifications, Manuals, and Supporting Literature

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Model Selection Guide

Use this table to find the right model for your application.  Don't see the option you need? Call a Lesman sales specialist at 800-953-7626

Model Temperature
Range
Bore
Size
Nominal
Diameter
Reduced
Nominal Diam.
Compatible
Actuator
Catalog
Number
Butterfly valve for continuous control of gas flow rates, ratio of 10:1. Maximum inlet pressure 7.25 PSI
BVG 40TW05
BVG 65TW05
BVG 50TW05
BVG 80TW05
BVG 100TW05
-4° to 140°F
-4° to 140°F
-4° to 140°F
-4° to 140°F
-4° to 140°F
Full
Full
Full
Full
Full
1 1/2"
2 1/2"
2"
3"
4"
IC 20 or IC 40
IC 20 or IC 40
IC 20 or IC 40
IC 20 or IC 40
IC 20 or IC 40
74105790
74105792
74105791
74105793
74105794
BVG 40/32TW05
BVG 50/40TW05
BVG 65/50TW05
BVG 80/65TW05
BVG 100/80TW05
-4° to 140°F
-4° to 140°F
-4° to 140°F
-4° to 140°F
-4° to 140°F
1X Reducing
1X Reducing
1X Reducing
1X Reducing
1X Reducing
1 1/2"
2"
2 1/2"
3"
4"
1 1/4"
1 1/2"
2"
2 1/2"
3"
IC 20 or IC 40
IC 20 or IC 40
IC 20 or IC 40
IC 20 or IC 40
IC 20 or IC 40
74214264
74214263
74214262
74105783
74105784
BVG 40/25TW05
BVG 65/40TW05
BVG 50/32TW05
BVG 80/50TW05
BVG 100/65TW05
-4° to 140°F
-4° to 140°F
-4° to 140°F
-4° to 140°F
-4° to 140°F
2X Reducing
2X Reducing
2X Reducing
2X Reducing
2X Reducing
1 1/2"
2 1/2"
2"
3"
4"
1"
1 1/2"
1 1/4"
2"
2 1/2"
IC 20 or IC 40
IC 20 or IC 40
IC 20 or IC 40
IC 20 or IC 40
IC 20 or IC 40
74214267
74214265
74214266
74105875
74105782

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