SIZES GLOBE/ANGLE Screwed Ends: 1 1/4" - 3" Grooved Ends: 1 1/2" - 6" Flanged Ends: 1 1/4" - 24" (globe); 1 1/4" - 16" ( angle) TEMPERATURE RANGE ( Valve Elastomers) Buna-N -40° F - 180°F Viton 0° F - 400°F SPRING RANGES ( inlet setting) 5-30 psi, 20-80 psi, 65-180 psi, 100-300 psi MATERIALS Consult factory for others. Body/Bonnet: Ductile Iron (epoxy coated), Carbon Steel (epoxy coated), Stainless Steel, Aluminum Seat Ring: Stainless Steel, Bronze Stem: Stainless Steel, Monel Spring: Stainless Steel Diaphragm: Buna-N, Viton, ( Nylon reinforced) Seat Disc: Buna-N, Viton Pilot: Stainless Steel, Bronze Other pilot system components: Stainless Steel, Bronze/Brass Tubing & Fittings: Stainless Steel, Copper/Brass The back pressure control valve shall function to prevent the upstream pressure from falling below a predetermined minimum while closing to prevent reverse flow. DESIGN The back pressure control valve shall be a single-seated, line pressure operated, diaphragm actuated, pilot controlled globe valve. The valve shall seal by means of a corrosion-resistant seat and a resilient, rectangular seat disc. These, and other parts, shall be replaceable without removing the valve from the line. The stem of the main valve shall be guided top and bottom by integral bushings. Alignment of the body, bonnet and diaphragm assembly shall be by precision dowel pins. The diaphragm shall not be used as a seating surface, nor shall the pistons be used as an operating means. The pilot system shall be furnished complete, installed on the main valve and include a needle valve, inline strainer and solenoid valve. The back pressure control valve shall be operationally and hydrostatically tested prior to shipment. MATERIALS OF CONSTRUCTION The main valve body and bonnet shall be ductile iron per ASTM A536, Grade 65-45-12. All ferrous surfaces shall be coated with 4 mils of epoxy. The main valve seat ring shall be CF8M stainless steel. Elastomers (diaphragms, resilient seats and O-rings) shall be Buna-N. The control pilot, needle valve and control line tubing shall also be Stainless Steel. OPERATING CONDITIONS The back pressure control valve shall be suitable for controlling the inlet pressure at <X> psi and flow rates ranging from <X to X> gpm. ACCEPTABLE PRODUCTS The back pressure control valve shall be a <size> Model 108-3, <globe pattern, angle pattern>, with <150# flanged, 300# flanged, threaded, grooved> end connections, as manufactured by OCV Control Valves, Tulsa, Oklahoma, USA. Model 108-3 (Fueling Service) Global performance. Personal touch. TOLL FREE 1.888.628.8258 phone: (918)627.1942 fax: (918)622.8916 7400 East 42nd Place, Tulsa, Oklahoma 74145 email: [email protected] website: www.controlvalves.com SPECIFICATIONS ( Typical Fuel Application) Represented by: For maximum efficiency, the OCV control valve should be mounted in a piping system so that the valve bonnet (cover) is in the top position. Other positions are acceptable but may not allow the valve to function to its fullest and safest potential. In particular, please consult the factory before installing 8" and larger valves, or any valves with a limit switch, in positions other than described. Space should be taken into consideration when mounting valves and their pilot systems. A routine inspection & maintenance program should be established and conducted yearly by a qualified technician. Consult our factory @ 1-888-628-8258 for parts and service. How to order your Model 108-3 valve When ordering please provide: Fluid to be controlled - Model Number - Size Globe or Angle - End Connection - Body Material Trim Material - Elastomer Material - Pressure Setting or Spring Range - - Special Requirements / Installation Requirements REVISED 1/12/11
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