2.5 Inch 304 Stainless Steel Diesel Generator Exhaust Rain Cap

The gravity counterweight flapper opens automatically under exhaust pressure when the engine runs, bringing unobstructed exhaust flow and no power loss. Once the equipment shuts down, the flap closes by its own weight instantly. It effectively blocks rain, snow, leaves, dust and small animals from entering the muffler and exhaust pipe, avoiding internal water accumulation, rust and blockage.

• Made of SUS304 stainless steel, rust & salt spray resistant
• 
  
  Gravity flapper design, auto open/close, low backpressure
• 
  
  Blocks rain, snow, leaves and debris when equipment stops
• 
  
  No negative impact on engine exhaust and power

Q1: What is this exhaust rain cap for?
A: 304 stainless steel exhaust flapper rain cap / muffler rain cap flap for vertical exhaust stacks of diesel generators, trucks and tractors. Gravity flap closes to block rain, snow and debris when off, opens automatically for exhaust when running.

Q2: Does it impact engine performance?
A: No. The flapper fully opens under exhaust pressure, low backpressure, no power loss.

Q3: Will it rust?
A: SUS304 stainless steel, good corrosion & salt spray resistance for outdoor and coastal use.

Q4: How to install?
A: Clamp-on mounting, no welding needed.

Q5: Available sizes?
A: 2”,3”,4”,5”,6”; custom sizes acceptable.

Q6: Can it be used for wading?
A: No. It only stops rain at rest, not for deep water crossing.

Q7: Will the flapper rattle?
A: Precisely balanced counterweight, normally quiet. Pick the correct size to avoid vibration.

Q8: Item condition?
A: Brand new. Neutral or custom packing.

Keywords:

Exhaust Rain Cap ,Exhaust Weather Cap,Exhaust Stack Rain Cap,Exhaust Flapper Rain Cap,Truck Exhaust Pipe Rain Cap,Muffler Rain Cap Flap