Transcription of GRESSWELL G55 RELIEF VALVES
1 G55 RESSWELL VALVES Bronze RELIEF ValvesSIZE RANGEDN1520253240506580in 1 1 1 2 2 3 PIPE CONNECTIONSINLET:Threaded G (BSP) Maleto BS EN ISO 228/BS 2779 OUTLET: Threaded Rp Parallel Female to BS 21/BS EN 10226/ISO 7 Alternative thread standards, R x Rc (BSPT) or ANSI (NPT) are available upon :Most flange standards can be accommodated, EN 1759 (Class designated), BS EN 1092 (PN designated) orBS 10 (Table designated) - please Dome TopCu Alloy BS EN 12164 CW614N 6 Spring PlateCu Alloy BS EN 12164 CW614N2 BodyCu Alloy BS EN 1982 CC491K7 SpindleCu Alloy BS EN 12164 CW614N3 Base (Metal Seat)Cu Alloy BS EN 1982 CC491K8 BallSt.
2 Steel AISI 4203P PTFE SeatVirgin PTFE9 ValveCu Alloy BS EN 12165 CW602N3V Viton SeatViton 85 Brown10 LabelMetallised Polymer3S Silicone SeatSilicone 50 Blue11 Spring 15 - 50mmSt. Steel BS2056 302 S263FL Flanged InletCu Alloy BS EN 1982 CC491 KSpring 65 & 80mmCarbon Steel BS5216 ND34 Adjusting ScrewCu Alloy BS EN 12164 CW614N 12 Flanged OutletCu Alloy BS EN 1982 CC491K5 Lock NutCu Alloy BS EN 12164 CW614N 13 WasherFibreGRESSWELL G55 RELIEF VALVESSide Outlet discharge with leak proof Dome Cover over theadjusting screw.
3 These VALVES are commonly used for preventing asafe pressure being exceeded in pressurised lift is proportional to the system with stainless steel trim, PTFE, viton and silicon soft Top - Screwed or FlangedConnectionsGRESSWELL VALVESH alesfield 21, Telford, Shropshire, TF7 4 NXTel: 01952 580946 Fax: 01952 582546email: VALVES and the G device are registered trademarks of GRESSWELL VALVES Limited. GRESSWELL VALVES are precision engineers within the Wrekin Shell are subject to review and improvement. Data in this publication is for information only, and does not form part of any CHARTSizeABCDW eight (kg) dimensions in millimetres (mm).
4 Flange dimensions varyaccording to specification (available upon request).FEATURES & BENEFITSG resswell VALVES are quality assurance approved to BS EN ISO 9001: 2008. Certificate No. in accordance with BS 6759 Parts 1, 2 & 3 andcompliant with BS EN ISO 4126 Part 1 with full Cat IV 3 springs are needed to cover the full pressure operating and maintenance instructions are supplied witheach or a combination of both are available leaflet Ref: DC G55 & G90 for Discharge GRESSWELL RELIEF VALVES are given a hydraulic seattightness test before leaving the factory and theadjustment range is clearly VALVES are supplied VALVES are pressure tested to ensuresoundness of tests or witness testing can be arranged atextra TYPES - SPRING/PRESSURE RANGESSeatHousingValveDiscPressureRangeT emperatureRangeSpring Ranges (bar & )A(Low)B(Medium)C(High)BronzeBronzeto bar(300 )-15 to +225 - (7 - 50) - (50 - 150)
5 - (150 - 300)BronzePTFE insertBronzeto bar(300 )-15 to +225 - (7 - 50) - (50 - 150) - (150 - 300)BronzeVITON seal Bronzeto bar(300 )-15 to +200 - (7 - 50) - (50 - 150) - (150 - 300) SILICON seal also available on request - available set pressures will be confirmed at time of
