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   Home / Vent Pipe Main Page / Simpson Dura Vent Type B Vent Pipe / Buy

Simpson Dura Vent Type B Gravity Vent Pipe
For Gravity Heaters such as Bosch Aquastar 1600H, 1600P, 125B, 125HX, 125BS, 1000P, 38B and non-power vented heaters


Simpson Dura-Vent Type B gas vent system features our "no equal" twist-lock connections. Precision swedged fittings offers a superior positive-lock connection that is fast and easy to assemble. When necessary, the system may also be disconnected without damage to the product.

Type B gas vent is for venting listed natural gas or liquid propane Category I appliances. Check the install manual of the appliances you are venting to be sure that it uses Type B gas vent systems.


Simpson Dura-Vent Type B Vent Pipe
Simpson Dura-Vent Type B Features & Benefits
  • HEAVY GAUGE ALUMINUM LINER provides fast warm-up for a quick, strong draft and corrosion resistance for safe, trouble-free performance
  • MALE & FEMALE ENDS ARE HEMMED to add structural integrity, preventing ovalization. Hemmed edges also eliminate sharp edges that can cause job site injuries. The inner liner is recessed to avoid damage in handling
  • DIE FORMED ENDS provide consistent fit, easy twist-lock assembly, and proper alignment
  • INVERSE BEADS add rigidity and ensure proper spacing between the inner liner and the outer wall. The inverse beads also serve to seal the air chamber between the inner and outer walls. As a result, the inner liner heats up rapidly and remains hot during the operation of the appliance, minimizing the effects of condensation
  • Do not use Type B Vent for Category II, III, or IV gas appliances
  • Always refer to gas appliance manual and all local and national codes!
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