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Stinger Deflagration Isolation Valve

Stinger Deflagration Isolation Valve

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Our Price: $4,385.55

Product Code: STINGER

Stinger Size & Capacity:

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To purchase a Stinger explosion isolation valve,  please fill in the fields below, and check the box to acknowledge you've read the application parameters.





Stinger Acknowledgment*:
I've read, understand, and agree to the terms and conditions for installing the Stinger isolation valve according to the application parameters below, and understand the need for regular inspection and maintenance according to the installation, operation, and maintenance manual. I agree to the standard Camfil terms and conditions.

Application Parameters

The Stinger isolation valve can be used for:

  • Dry organic dust
  • Dust with a Kst of 50≤ Kst ≤200 bar m/s

The stinger isolation valve cannot be used for:

  • Combustible metal dust
  • Dust with a Kst higher than 200 bar m/s
  • Hybrid mixtures of dust and gas
  • Flammable gases
  • Abrasive dusts
  • High dust-load applications

Guidelines & Data

  • The Stinger must be regularly inspected and maintained to ensure safe operation.
  • The National Fire Protection Association (NFPA) has strict guidelines concerning the commissioning, operating, maintenance and inspection for explosion isolation devices. Please consult NFPA 652, NFPA 654 and NFPA 69 for further information.
  • This valve has been tested per the guidelines found in NFPA 69 section per EN 16647, and is certified as tested. Its application must adhere to the application guidelines to assure the valve operates as designed. Failure to do so could result in loss of life and property or citations and fines from OSHA.
  • Failure to install this device within the tested limits could result in injury, loss of life and property damage.
  • Pred of collector - Reference the installation, operation and maintenance manual
  • Pmax of valve: 14.5 psi

Description Technical Specs Installation & Operations Manual
Stinger™ Deflagration Isolation Valves isolate dust collector deflagrations, preventing the deflagration from traveling back through the inlet pipe into the workspace.

Get full information about the Stinger by downloading the brochure.

Flow Activated Flap Valve

During normal operation, the airflow holds the blade open. A back stop makes sure the blade is in the approved and tested position.

If a deflagration occurs in the dust collector, a pressure wave will travel through the pipe faster than the flame front and close the flap valve, protecting downstream personnel and equipment form injury and damage.

When the valve is fully closed, a latching mechanism keeps it shut. The closed valve prevents the transmission of flame past the valve.

The valve also prevents smoke, dust and burning debris from traveling through the inlet pipe into the factory.

Composite Blade Advantages

The blades are made from a composite material for strength and minimum weight. Low weight is necessary for the valve to close with the highest possible speed. The design also eliminates the need for stiffeners on the back of the blade. Stiffeners allow dust build up on the blade, which increases the weight and thus, pressure required to hold the blade open. Dust on the back of the blade is also undesirable because it would provide additional fuel for the deflagration.

The front side of the blade is covered with a 3 mil abrasion resistant rubber sheeting. This does not contribute to the strength of the blade, but maintains it by protecting it from wear. Wear on a blade reduces its strength and could contribute to failure during a deflagration. The wear liner also acts as a wear indicator. If the metal behind the liner is seen during routine inspections, it will indicate that the blade needs to be replaced. The valve seat is also replaceable but did not sustain damage during dozens of tests. The blades bolt to the square pivot shaft and are replaceable.

The blade provides the following advantages:
  • Low weight
  • Lower pressure drop
  • Wear resistant liner
  • High strength to weight ratio
  • Smooth back
  • No dust accumulation
  • Easily replaceable