Overview Solenoid-operated diaphragm valves provide slow opening and fast closing suitable for controlling natural, LP or manufactured gases. They are normally used on atmospheric boilers, commercial water heaters, and rooftop heaters. Features V48 for line voltage service; V88 for 24Vac service. Close firmly with diaphragm that is both weight and spring loaded. Two second maximum closing time. Valve closes on power failure; recommended for final shutoff service. Set opening time with various sized bleed orifices or adjustable bleed valve. Use with LP, natural or manufactured gases. Made with cast aluminum in straight-through valve pattern. Valve position indicator available for 1-1/4 in. V48A2227. Product Specifications Dimensions (in.)6 1/16 in. high x 4 5/16 in. wide x 5 in. deepDimensions (mm)154 mm high x 127 mm wide x 109 mm deepMaterialsBody–AluminumMountingUpright (horizontal)Frequency60 HzApprovals, Underwriters Laboratories Inc.File No. MH1639, Guide No. YIOZApprovals, Canadian Standards AssociationCertificate No. 158158-2500005576 (Z21.21-CSA 6.5)Electrical Connections6 in. LeadwiresPower Consumption9 W; 15 VA maxVoltage24 VacOperating Temperature Range (F)32 F to 125 FOperating Temperature Range (C)0 C to 52 CCurrent Ratings0.62 max amps at rated Vac/HzBody PatternStraight-throughPressure Ratings (psi)1/2 psiPressure Ratings (kPa)3.4 kPaType of FuelNatural; LP; ManufacturedPipe Size (inch)1 in.Pipe Size (DN)DN25Bleed Tapping1/8-27 NPTPilot Tapping1/8-27 NPTValve Opening Time5 sec maxValve Closing Time2 sec max