Series 2700 - Pacific Controls

1 197 CSeries 2700 pressure Relief ValvesTable of ContentsIntroductionGeneral Description ..IFCO rdering Information & Numbering System ..1 Bill of Materials-Conventional ..2 Bill of Materials-Balanced Design ..3 Selection Table: O-Ring Design ..4 Selection Tables Conventional Customary Units Threaded Connections ..4 Flanged Connections ..5 Selection Tables Balanced Customary Units Threaded Connections ..6 Flanged Connections ..6 Special Materials ..7 Capacity Tables Customary Units Air ..8 Steam ..8 Water ..9 Selection Tables Conventional DesignMetric Units Threaded Connections ..10 Flanged Connections ..11 Selection Tables Balanced DesignMetric Units Threaded Connections ..12 Flanged Connections ..12 Capacity Tables Metric Units Air ..13 Water ..13 Steam ..14 Cap Constructions ..14 Dimensions & Weights.

2 15-16 Other Farris Engineering Valves ..17 General Notes:1. Blowdown on liquid service may slightly exceed 15% in certain is a registered trademark of the DuPont is a registered trademark of Inco Alloys International and Hastelloy C are registered trademarks of Haynes International to provide customers with the widest selection of sizes, orifices and construction materials, Series 2700 meets the exacting demands of the process Design A single design handles air, steam, vapor and liquid services. Maximum interchangeability of parts affords easy maintenance and lower costs. Fixed blowdown design simplifies testing and repair. Maximum blowdown of 5% to 15% regardless of A built-in lift stop ensures stable performance. Balanced design in C and D orifices nullifies the effects of back pressure on set point.

3 ASME Code Certification Manufactured in conformance to Section VIII of the ASME Boiler and pressure Vessel Code for air, steam, and water service. Capacities certified by The National Board of Boiler and pressure Vessel O-Ring Seat Design O-ring seat design available for maximum seat tightness. Teflon available at higher pressures to provide the same zero bubbles per minute leakage as elastomer O-ring Product Line Set pressures from 15 psig to 6500 psig with orifice areas from to sq. in. Standard valves have MNPT inlet X FNPT outlet. Optional female inlet thread, flanged, socket weld, welding nipple, and sanitary connections Selection of Materials Standard construction includes 316 stainless steel body, trim and spring, with carbon steel bonnet. Optional materials include Monel , Hastelloy C , and materials suitable for NACE products manufactured by Farris Engineering are warranted free of defects in material and workmanship when used within the range recommended for a period of one year after installation or eighteen months from delivery.

4 When authorized, any defective product may be returned to the factory and if found defective will be repaired or replaced free of charge, solely at the discretion of Farris Engineering, ex-works our factory. No charge for labor or other expense incurred will be allowed, as the liability of Farris Engineering is measured by the refund price of the defective product only. All warrantees are based on the product being used within the range recommended and does not cover damages or defects due to normal wear and tear, misuse, alteration or neglect. The purchaser shall determine the suitability of the product for use and assumes all risks and liabilities in connection warranty does not cover the performance of valves tested at site on test equipment that is not to the same technical standard as that used by the SystemOrdering Information27DA23H M20/S4 Series NumberOrifice AreaSeat ConstructionInlet Size1 Outlet Size1 Special VariationsInlet ConnectionsCap ConstructionTest Gag2 Special Materials27US Customary Units Sq.

5 Mm2C Metal SeatC Soft SeatT Teflon Seat1 1/2"2 3/4"3 1"4 1-1/2" 3 1"4 1-1/2"5 2"6 2-1/2"H High pressure variations of standard typesB Balanced design3D Heat transfer fluid standard pressureE Heat transfer fluid high pressureM MNPTF FNPT1 Flanged-150RF2 Flanged-300RF3 Flanged-600RF4 Flanged-900RF5 Flanged-1500RF6 Flanged-2500 RFO SpecialS Socket WeldT SanitaryW Welding Nipple2 Plain4 Packed Lever7 Open Lever0 No Gag1 Test GagS4 Complete 316 St. NACE Trim: StandardN4 NACE Trim: All St. Monel Body & DiscM2 Monel InternalsM4 Complete MonelH1 Hastelloy C Body & DiscH2 Hastelloy C InternalsH4 Complete Hastelloy CSelecting and specifying Farris pressure relief valves is simple using the numbering system that follows. Each digit of the type number has a distinct significance. The digits describe the basic valve Series , orifice, seat design, inlet temperature range, body, bonnet and spring material, inlet type and pressure Quantity.

6 *2. Inlet and outlet Farris type number.*4. Inlet and outlet connections: MNPT, FNPT, flanged, socket weld, sanitary inlet or welding Materials of construction if other than O-ring seat pressure seal material, if Set pressure .*Please specify the following so that we may process your order as quickly as Operating and relieving temperatures.*9. Allowable overpressure.*10. Fluid and fluid state.*11. Backpressure, superimposed constant and/or variable, and built-up.*12. Required capacity.*13. Accessories: open or packed lever if required; test Code requirements, if Notes:1. Not all combinations of inlet and outlet sizes shown are available. Consult the selection tables of pages 4 and Test gag option is not available with open lever Available in O-ring seat design only. Consult the Farris Factory.

7 *As a customer service, we verify your selection and sizing. In order to do this, we must have this Series ConventionalBill of Materials ConventionalItemPart NameStandard Material1 BodySA-351, Gr. CF8M St. St. or SA-479 Type 316 St. , Gr. WCB, Carb. St. St. Holder316 St. St. Adj. Screw316 St. Nut316 St. , Plain ScrewedCarbon Steel10 Cap Gasket316 St. Gasket316 St. Gasket316 St. (-50 F to +750 F)Stainless Steel14 Spring Buttons316 St. SealSt. St. Wire / Lead Seal16 Nameplate (Not Shown)Stainless Steel17 Welding Nipple (Inlet)316 St. Nipple (Outlet)Carbon Steel19 Lap Joint Stub End (Inlet)316 St. Joint Stub End (Outlet)Carbon Steel21 Lap Joint Flange (Inlet)Carbon Steel22 Lap Joint Flange (Outlet)Carbon SteelComplies with ASME Boiler & pressure Vessel Code, Section VIII987641211532110131514O-Ring Design (Optional)O-Ring RetainerO-Ring Seat Seal181720221921 Retainer Lockscrew32700 Series Balanced DesignSeries 2700 Back pressure Correction Factors Balanced DesignBill of Materials Balanced DesignItemPart NameStandard Material1 BodySA-351, Gr.

8 CF8M St. St. or SA-479 Type 316 St. , Gr. WCB, Carb. Retainer316 St. Seat SealViton 5 Retainer Lock Screw304 St. St. SealViton8 Disc Holder316 St. Holder SealViton10 Stem316 St. Adj. Screw316 St. Nut316 St. , Plain ScrewedCarbon Steel14 Cap Gasket316 St. Gasket316 St. Gasket316 St. Steel18 Spring Buttons316 St. SealSt. St. Wire/Lead Seal20 Nameplate (Not Shown)Stainless SteelComplies with ASME Boiler & pressure Vessel Code, Section VIIIG eneral Notes:1. Other O-ring materials available. Consult the Flanged, socket weld, welding nipple and female inlet threaded designs Temperature for balanced or O-ring seat design is limited by the elastomer selected. See page is a registered trademark of DuPont you have variable back pressure ? Can t use a balanced bellows design? Farris has the solution with the Series 2700 Balanced Design pressure relief valve.

9 The balanced effect is achieved by isolating the upper valve chamber and eliminating any back pressure build-up in the bonnet effecting valve set valves are available in 1/2", 3/4" and 1" inlet sizes with a 1" outlet and two orifice areas. pressure ranges from 15 to 1480 psig, standard soft seat design. Flanged and welded inlet and outlet connections are available with the same material options as the standard Vent0% Back PressureKb (Gas) Kw (Liquid)Back pressure Correction Factor5%10%15%20%25%30%40%50%60%70%80%35 %45%55%65%75%4O-Ring SelectionSelection Table Conventional Design (see notes on page 5)Threaded Connections MNPT X FNPT, Customary UnitsOrifice Area Sq. Size Inlet x OutletType NumberMaximum Set pressure , psigMax. Back pressure psig at 100 FMaterials-50 F to 750 FBody / x 1 3/4 x 1 3/4 x 1 1 x 1 1 x 127CA13-M20 27CA23-M20 27CA23H-M20 27CA33-M20 27CA33H-M201600 2500 5000 2500 6500400316 St.

10 Carb. x 1 3/4 x 1 3/4 x 1 1 x 1 1 x 127DA13-M20 27DA23-M20 27DA23H-M20 27DA33-M20 27DA33H-M201600 1600 5000 1600 5000400316 St. Carb x 1-1/227EA34-M202500400316 St. Carb. x 227FA45-M201600400316 St. Carb. x 2-1/227GA46-M201000400316 St. Carb. SteelO-Ring Seat Valve pressure & Temperature LimitsOrificePressure Range, psig1 pressure Range, barg1 Elastomer SeatTeflon SeatElastomer SeatTeflon SeatC High Pressure15 to 1480 800 to 2500 2501 to to 102 to 172 to 345D High Pressure15 to 1480 800 to 1600 1601 to to 102 to 110 to 345E15 to 1480600 to to to 172F15 to 1480600 to to to 110G15 to 1000200 to to 6914 to 69 Material AvailabilityMaterialTemperature Range2 F CViton -20 to +450 -29 to +232 Buna N-20 to +250 -29 to +121 EPR0 to +350 -18 to +177 Silicone-150 to +450 -101 to +232 Kalrez -20 to +550 -29 to +289 Teflon-300 to +500 -184 to +260 Kalrez is a registered trademark of DuPont 2700 Series is available with an optional O-ring seat which minimizes fugitive emissions and costly product loss.