TI-P001-07CH Issue 4Cert. No. LRQ 0963008ISO 9001LRV2B and LRV2SGunmetalPressure Reducing Valves19221The LRV2B and LRV2S are direct acting pressure reducing valvessuitable for liquid applications.Available typesLRV2BPhosphor bronze/brass bellowsLRV2SStainless steel (316 Ti/316L) bellowsLRV2B and LRV2S pressure reducing valves are supplied with oneof three colour coded springs which are identified by the disc (19)located on the adjustment handwheel:GreyGreenOrangeFor downstream pressure control: 0.35 to 1.7 bar gFor downstream pressure control: 1.40 to 4.0 bar gFor downstream pressure control: 3.50 to 8.6 bar gDescription3471Note: where control spring ranges overlap always use the lowerrange to give better control.Sizes and pipe connections10075502500½\¾\Pressure/temperature limitsTemperature °C695206810Pressure bar gThis product must not be used in this region.2412141081211161415131817Body design conditionsPN25PMAMaximum allowable pressure @ 120°C25 bar gTMAMaximum allowable temperature @ 17 bar g100°CMinimum allowable temperature0°CPMOMaximum operating pressure14 bar g @ 75°CTMOMaximum operating temperature75°C @ 14 bar gMinimum operating temperature0°CNote: For lower operating temperatures consult Spirax Sarco.DPMXMaximum differential pressure is limited to the PMOMaximum recommended turndown ratio 10:1 at maximum flowDesigned for a maximum cold hydraulic test pressure of 38 bar gNote: With internals fitted, test pressure must not exceed 17 bar gMaterialsNo.Part123456789Spring housingAdjustment handwheelTop spring platePressure adjustmentspringBellows assemblyMaterialsAluminium epoxy coatedPolypropyleneCast ironSilicon chromespring steelStainless steelDIN 1691 GG 20BS 2803 685 A55Range 2316Ti/316LLM 24No.Part10Push rod11Valve seat12Valve seat gasket13Piston14Valve head15Piston return spring16Strainer screen17Cap18Cap gasket19Spring range ID disc20Bulkhead plate21Tamper-proof pinMaterialsStainless steelStainless steelStainless steelStainless steelNitrile rubberStainless steelBS 2056 Gr. 302 S26Stainless steelBrassBS 1449 316 S16BS 2872 CZ 122ASTM A276 316LBS 970 431 S29BS 1449 316 S11BS 970 431 S29Phosphor bronzeBS 2872 CZ 122Stainless steel reinforcedBellows assembly gasketexfoliated graphiteHex. bolt (M8 x 25 mm)BodyCone shaped washerSteel zinc platedGunmetalStainless steelBS 3692 Gr. 8.8BS 1400 LG2ASTM A276 316LStainless steel reinforcedexfoliated graphitePolypropyleneStainless steelMild steel copper plated316LLocal regulations may restrict the use of this product to below the conditions quoted.
In the interests of development and improvement of the product, we reserve the right to change the specification. © Copyright 2004
CapacitiesSizeKvsFull lift capacity for safety valve sizing purposes are shown below:½\"2.1¾\"3.61\"4.3The spare parts available are shown in heavy outline. Partsdrawn in broken line are not supplied as spares.Available spares*PressureadjustmentspringGreyGreenOrange0.35 to 1.7 bar g1.40 to 4.0 bar g3.50 to 8.6 bar gStainless steel orphosphor bronze4, 194, 194, 195, 6, 976, 11, 12, 13, 14, 15, 16, 206, 12, 1816Spare partsFor conversion: Cv (UK) = Kv x 0.963Cv (US) = Kv x 1.156Dimensions / weight (approximate) in mm and kgSizeA½\"¾\"1\"8396108B323232C626262D130130130E252525F404040Weight2.02.12.4*Bellows assembly specify type*Spring housing hex. bolts (set of 4)Valve and seat assembly*Gasket set*Strainer screenE Withdrawal distance*Common to all sizes.How to order sparesAlways order spares by using the description given in the columnheaded 'Available spares' and state the size, type and pressurerange of the reducing valve.Example: 1 off Pressure adjustment spring (orange), having adownstream pressure range of 3.5 to 8.6 bar g for a Spirax Sarco½\" LRV2S pressure reducing valve.19D7Spring housinghex. boltsPressureadjustmentspringC4BAF Withdrawal distance9Bellows assembly566For full details see the Installation and Maintenance Instructions(IM-P001-08) supplied with the product.Safety information, installation and maintenance6201112Valveand seatassemblyInstallation note:The valve should be installed in a horizontal pipeline with thedirection of flow as indicated by the arrow on the valve body.Example: 1 off Spirax Sarco ½\" LRV2S pressure reducing valvewith gunmetal body, screwed BSP connections, stainless steelbellows and fitted with an orange spring for downstream pressurecontrol of 3.5 to 8.6 bar g.12How to orderGasket set13, 14, 151816Recommended tightening torquesItem no.71116PartHex. boltsValve seatBottom cap13 A/F32 A/F32 A/FormmM8 x 25N m13 - 15108 - 13265 - 75LRV2B and LRV2S Gunmetal Pressure Reducing ValvesTI-P001-07 CH Issue 4
