符合 NFPA 要求的进气保护
Stinger 防爆隔离阀 prevents a deflagration (explosion) that could occur in the dust collector from traveling back down the inlet pipe back into the workspace/process.
Composite Blade Advantages (Patent Pending)
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 Stinger explosion isolation valve features a fast acting composite blade that provides the following advantages:
- Low weight
- Lower pressure drop
- Wear resistant liner
- High strength to weight ratio
- Smooth back
- No dust accumulation
- Easily replaceable
- Absorbs damage evenly and protects main valve components from damage during activation