Regulator vents opposite pressure tap ports Offers a compact integral two-stage regulator design perfect for lower BTU applications and confined spaces. They feature an adjustment range from 9-13” WC (factory set @ 11” WC). Stainless steel integral components, fluorocarbon (FKM) seat discs, molded lip fabric reinforced diaphragms, and large precision machined aluminum orifices providing superior downstream regulation and maximum corrosion resistance against weather or contaminated gas. Type: Integral Two-Stage Max. Inlet Pressure: 250 PSIG Exterior Finish: Gray Powder Coat Orifice Size: .17” (Compact) & 7/32” (Full) Seat Material: Fluorocarbon (FKM) Diaphragm: Fabric Reinforced NBR/Molded Lip O-Ring Bonnet/Body Seal Relief Type: Internal Relief - Spring Loaded Bonnet / Body Material: Die Cast Aluminum Listings: CULUS / UL 144 Mounting Holes: Standard 3-1/2” Center Pressure Taps: #54 Orifice 1/8” FNPT Plugged (3) Relief Travel Stop: Molded in Adjustment Cap -   Gray (Compact), Black (Full Size)