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an Olsträd Engineering Company

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Industrial Butterfly, Solenoid, & Control Valves

Precision Performance, Reasonable Rates

Butterfly Valves | Solenoid Valves | Ball Valves | Vent Valves | Safety Relief Valves | Safety Shut-off Valves

Kromschröder gas and air valves are perfect for nearly every situation. Designed for rigorous use and the maximum amount of open/close cycles, these valves make economical sense for pulse-firing and modulating systems alike.

BVHM butterfly valves mount to Kromschröder's MB actuators with the help of our TPS Attachment set. Field operation of BVHM butterfly valves has been reported at over 20 million cycles – making them the top choice for pulse-fire operation! The MB actuator features a blue LED which indicates the operating state of the BVHM, and is incredibly easy to set for low- and high-fire positions. With a variety of BVHM sizes and MB actuating speeds, you're guaranteed to find the perfect combination for your process!

BVG butterfly valves are perfect for regulating gas or air flow rates for continuous control and pulse-fire processes. Engineered to mount directly onto IC 20 and IC 40 actuators, accessories are also available which allow manual manipulation. Available in 1x and 2x reduced nominal diameters, BVGs can deliver higher control accuracy, without complex reducing fittings!

BVH and BVHS butterfly valves are used for processes that require the very precise adjustment of the flow rate or low leakage. Once the BVH is mounted to the IC 40 actuator, the valve disc may be moved to the required angle with almost zero hysteresis! The BVHS has all the features of the BVH, but with the added bonus of a safety closing function. Used with the IC 40S, this valve ensures that, in the event of a main power failure, the valve closes to prevent air streaming into the furnace.

VGP solenoid valves are for automatic shut-off, and are normally closed. All models are quick opening and closing and for use with gas and air. Available in threaded sizes 3/8″ to 1″ NPT.

VR solenoid valves are for the pulse-firing of industrial burners in cold-air operating mode. VRs are available in quick opening/closing and slow opening/closing versions, and with threaded sizes 1 ½″, 2″, and 2 ½″ NPT. Versions featuring a proof of closure switch and versions with a bypass plug are available upon request.

VAN magnetic relief valves are solenoid valves for blowing off excess or leakage gas on valve proving controls. Normally open for use with gas and air, the VAN is available in threaded sizes ½″, ¾″, 1″, and 1 ½″ NPT.

RV control valves and RVS control valves (with built-in solenoid valve) are part of the Moduline family of components. RV and RVS control valves are used for the control of continuously regulated burner processes, can be used with either gas or air, and feature a control ratio of 100:1. These valves are available with a wide variety of options, in either Moduline 2 and Moduline 3 sizes (for use with Moduline flanges) or ANSI flange sizes (RV: 2″ to 4″; RVS: 2″ & 2 ½″).

Butterfly Valves

Butterfly Valve BVG

Butterfly Valve BVG
The butterfly valve BVG is designed to adjust volumes of gas, cold and hot air, and flue gas on various appliances and flue gas lines. 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.

Butterfly Valve BVH

Butterfly Valve BVH
The butterfly valve BVH is designed to adjust volumes of gas, cold and hot air, and flue gas on various appliances and flue gas lines. The butterfly valve BVH is used for processes that require very precise adjustment of the flow rate or low leakage. In conjunction with the stop bar, the valve disc ensures very low leakage rates.

Butterfly Valve BVHM

Butterfly Valve BVHM
The butterfly valve BVHM is well suited to intermittent operation due to the large number of operating cycles in conjunction with the solenoid actuator MB 7.

Butterfly Valve BVHS

Butterfly Valve BVHS
The butterfly valve BVHS with safety closing function is used with the actuator IC 40 in systems where it is important that in the event of a main voltage failure, the valve closes preventing air streaming into the furnace without being under control.

Butterfly Valve DKR

Butterfly Valve DKR

Butterfly valve DKR is designed to adjust volumes of hot air and flue gas on various appliances and flue gas lines. It can be used for a control ratio of up to 1:10.

Solenoid Valves

Industrial Solenoid Valve VMR, VML

Solenoid Valves VMR, VML

The Elektrogas Solenoid Valve for Gas VMR, VML is designed for use as air or gas blocking and releasing controls.

Industrial Solenoid Valve VMR..OTN

Solenoid Valves VMR..OTN

The Elektrogas Solenoid Valve for Gas VMR..OTN is designed for use as air or gas blocking and releasing controls.

Industrial Solenoid Valve VMM

Solenoid Valves VMM

The Elektrogas Double Solenoid Valve for Gas VMM is designed for use as air or gas blocking and releasing controls.

Solenoid Valves for Gas VAS

Solenoid Valves for Gas VAS
Solenoid Valve VAS is designed for safeguarding and controlling the air and gas supply to gas burners and gas appliances.

Double Solenoid Valves for Gas VCS

Double Solenoid Valves for Gas VCS
Double Solenoid Valve VCS is designed for safeguarding and controlling the air and gas supply to gas burners and gas appliances.

Gas/Air Ratio Control with Solenoid Valve VAG

Gas/Air Ratio Control with Solenoid Valve VAG
Gas/Air ratio control with solenoid valve VAG maintains a constant air/gas pressure ratio for modulating-controlled burners or with VAS 1 bypass valve for stage-controlled burners

Gas Regulator with Solenoid Valve VAD

Gas Regulator with Solenoid Valve VAD
The gas regulator with solenoid valve VAD with high control accuracy, is for excess air burners, atmospheric burners, or single-stage forced air burners. Pressure preset via setpoint spring.

Variable Gas/Air Regulator with Industrial Solenoid Valve VAV

Variable Gas/Air Regulator with Industrial Solenoid Valve VAV

Variable air/gas ratio control with Solenoid valve VAV is designed to maintain a constant gas/air pressure ratio for modulating-controlled burners. Pressure preset by the air control line.

Flow Regulator with Industrial Solenoid Valve VAH

Flow Regulator with Industrial Solenoid Valve VAH

Flow rate regulators VAH are used to maintain a constant gas/air ratio for modulating-controlled and stage-controlled burners.

Solenoid Valve for Air VR

Solenoid Valve for Air VR
VR solenoid air valves are for on/off or high/low control of air flow for combustion systems. Their continuous duty capability makes them especially well suited to withstand the continuous cycling of frequency firing combustion control systems.

Ball Valves

Ball Valves

Ball Valves
Lever handle operated, hot forged brass, economical ball valves.

Vent Valves

Vent Valve VAN

Vent Valve VAN
The VAN vent valve is for venting the area between the main shut-off valve and the block valve in the main gas train.

Safety Relief Valves

Safety Relief Valve VSBV

Safety Relief Valve VSBV
The VSBV reduces temporary pressure surges caused by fluctuations in system operation downstream from the pressure reducing regulator. It is required for use with the Regulator JSAV Overpressure Shut-off Valve.

Safety Shut-off Valves

Solenoid Valves for Gas VAS

Safety Shut-off Valve VAS
Solenoid Valve VAS is designed for safeguarding and controlling the air and gas supply to gas burners and gas appliances.

Gas/Air Ratio Control with Solenoid Valve VAG

Safety Shut-off Valve VAG
Gas/Air ratio control with solenoid valve VAG maintains a constant air/gas pressure ratio for modulating-controlled burners or with VAS 1 bypass valve for stage-controlled burners

Gas Regulator with Solenoid Valve VAD

Safety Shut-off Valve VAD
The gas regulator with solenoid valve VAD with high control accuracy, is for excess air burners, atmospheric burners, or single-stage forced air burners. Pressure preset via setpoint spring.

Gas Pressure Regulator with Overpressure Shut-off Valve JSAV

Gas Pressure Regulator with Overpressure Shut-off Valve JSAV

Use the JSAV regulator to protect against high pressure for valves downstream from a gas regulator.

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