The pressure reducing valve shall function to reduce a higher upstream pressure to a constant, lower downstream pressure regardless of fluctuations in supply or demand. DESIGN The pressure reducing 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 and installed on the main valve, and include an opening speed control and an inline strainer. The pressure reducing 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 shall be CF8M stainless steel. The opening speed control and control line tubing shall be stainless steel. OPERATING CONDITIONS The pressure reducing valve shall be suitable for reducing inlet pressures of <X to X> psi to a constant outlet pressure of <X> psi at flow rates ranging from <X to X> gpm. ACCEPTABLE PRODUCTS The pressure reducing valve shall be a <size> Model 127-3, <globe pattern, angle pattern>, with <150# flanged, 300# flanged, threaded, grooved> end connections, as manufactured by OCV Control Valves, Tulsa, Oklahoma, USA. Model 127-3 (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 127-3 valve When ordering please provide: Fluid to be controlled - Model Number - Size Globe or Angle - End Connection - Body Material Trim Material - Pilot Options Pressure Setting or Spring Range - Elastomers -Special Requirements/ Installation Requirements REVISED 05/18/11 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( outlet 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
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