Pressure Relief Valve
	Used to relieve venting pressures should an engine backfire occur. CAUTION!! Extreme care must be used when determining the location of this valve.If explosion pressures are significant enough to activate this valve, extremely hot gases (flame) and toxicants will be released into the air. NOTE: Actual part may appear different than illustration depending upon required diameter.	Parts include: One Pressure Relief Valve One Generator Adapter Conforms to NFPA 37 PIPE ID A B 6 9.50 10.75 8 12.25 10.75 10 14.00 10.75 12 16.75 10.75 14 19.25 10.75 16 20.25 10.75 18 22.25 10.75

Stack Base Drain
	Used at bottom of stack to permit drainage of rain or condensation. Completely closes stack. Supplied with 1" N.P.T. nipple. Supplied in I.D. sizes 6" to 48". Used only at base of stack.	Parts include: One Base Drain Section One Containment Band Set Length = 18".

Drain Section
	Used with open stack terminations or in instances where water or condensate removal is critical. Should be located below the roof line, preferably as close to the appliance as possible, to prevent freezing. Part contains 1" N.P.T. nipple. Flow resistance factor: K = .25	Parts include: One Drain Section One Containment Band Set Part is supplied in I.D. sizes 6"-48"and is 18" in length.

Drain Plug
	Used as a drain at the lower end of a vertical run.	Parts include: One Drain Plug One Containment Band One Outer Wall Closure Band

Inspection Plug
	Used to close the end of a horizontal run and/or to provide a clean out or inspection access port.	Parts include: One Inspection plug One Containment Band One Outer Wall Closure Band

Slip Joint
	Used to transition to a flangeless appliance. Flow resistance factor: K = same as pipe	Parts include: One Slip Joint One Containment Band

Stack Closure Ring
	Shields air gap from weather and allows free flow of air from insulated air space.	Parts include: One piece component

Stepped Increaser
	This part is used when a change in pipe diameter is required. A stepped increaser also maintains a low flow resistance.	Parts include: One Stepped Increaser One Containment Band (Larger Diameter) One Containment Band (Smaller Diameter) One Outer Jacket Set

Other VSI Components