Si 910. Engineering GREAT Solutions. Safety Valves acc. to ASME Sec. I, Sec. III and Sec. VIII
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1 Engineering GREAT Solutions Safety Valves acc. to ASME Sec. I, Sec. III and Sec. VIII
2 Features IMI Bopp & Reuther steam safety valve acc. to ASME Sec. I > High capacity > Fixed overpressure and blowdown acc. ASME Sec. I with no rings hence no requirement for adjustment > Full nozzle design > Nozzle and disc seat hard faced is standard > Special disk spring design for high pressures and large sizes ensures optimum operation Complete range of sizes and pressures High performance steam safety valve > Stable position at full lift by mechanical lift stop Inlet sizes NPS 1.5 to NPS 12 Overpressure 3% Inlet pressure rating ASME Cl 150 to Cl 2500 Blow down 4%-7% Set pressures 3 bar g to 330 bar g 44 psig to 4785 psig Allowable built-up back pressure 25% of the set pressure Temperature range 650 C / 1202 F Applications > Steam boiler > Superheater > Industrial steam generation > Process steam systems ASME I compliance without rings > Power plants Forged full nozzle inlet Approvals and standards ASME capacity certification - ASME Boiler & Pressure Vessel Code Section I and VIII - ASME Boiler & Pressure Vessel Code Section I, restricted lift - ASME Boiler & Pressure Vessel Code Section III - Capacity certification by The National Board of Boiler and Pressure Vessel Inspectors EC type examination - Pressure Equipment Directive 97 / 23 / EC - DIN EN ISO AD 2000-Merkblatt A2 - VdTÜV Merkblatt Sicherheitsventil 100 The design, manufacture, testing and labelling meet the requirements of DIN EN ISO , DIN EN / -2 (insofar as applicable to safety valves), DIN EN 1092 parts I and II Flanges, AD 2000-Merkblatt A4, AD 2000-Merkblatt HP0, technical rules for steam boiler TRD 110, TRD 421 2
3 Type code Type code Order example 1 Series Si 9 Steam safety valve acc. ASME Sec. I Si 9 2 Design 1 Conventional, open bonnet 1 3 Characteristic 0 High capacity High Flow 0 4 Pressure class 1 ASME class 150 x ASME class 300 x ASME class 600 x ASME class 900 x ASME class 1500 x ASME class 2500 x 600 up to orifice P ASME class 1500 x 600 from orifice P2 7 ASME class 2500 x 600 up to orifice P ASME class 1500 x 600 from orifice P2 5 Cap AB Lifting lever with test gag AB AK Pneumatic actuator 6 Material code 00 up to 800 F/427 C ) SA-217 WC9 up to 1094 F/590 C 21 SA-217 C12A up to 1202 F/650 C 7 Options.09 Locking sleeve (government ring) a Lift indication with inductive proximity switch in the cap.14b Lift indication with inductive proximity switch in the auxiliary housing.14c Lift indication with inductive proximity switch for exposed spindle with actuator AK.22a Weld end inlet.22b Weld end outlet.25 Block body design.35 Lift restriction ring.59 2) Stellited disc.60 2) Stellited seat.83a 3) Yoke column and coil spring.83b 3) Yoke column and disc spring 1) The standard materials of the material code 11 can be modified by selecting the trim code T1. The trim code T1 increases the temperature application range of the selected safety valve and therewith enable its use in high operating and discharge temperatures. Please see IMI Bopp & Reuther High Flow Safety Valves page 44 for information. on our trim code T1. Type Please state 2) Stellited disc and stellited seat is a standard for valves. 3) Design options.83a for yoke column design and.83b for yoke column with disk spring are dedicated for high pressures and large sizes. The IMI Bopp & Reuther sizing software Si-Tech 4 automatically uses these option codes. 5 AB Set pressure 12.0 MPa g Relief temp. 410 C Fluid Steam and state Superheated Inlet NPS 2, Cl. 2500RF Outlet NPS 3, Cl. 300 RF Flow diameter 40 mm / J2 Approval ASME I (V) 3
4 Coefficient of discharge and capacity calculation Orifice designator Flow area [in²] Flow area [mm²] Orifice diameter [in] Orifice diameter [mm] Full rated lift [mm] F G H J J K K L M N N P P P Q Q Q R R T T T V W W The certified coefficient of discharge acc. to ASME Section I and VIII is K = The coefficient applies for the orifice sizes given above and set pressure ranges starting 3.0 bar g / 44 psig up to the maximum set pressures detailed on page 10. The same certified coefficient of discharge K = and design limits apply for the PED approval. Steam capacity calculation acc. ASME Sec. I Capacity formula for Si units: W C = certified flow capacity [kg/hr] 4 W C = K x 5.25 x A x P x K N x K SC x K SH A = flow area [mm²] P = (1.03 set pressure ) MPa or (set pressure ) MPa, whichever is greater K = coefficient of discharge K N = Correction factor for the Napier equitation for pressures over 10.3 MPa g and up to 22.1 MPa g, which shall be used only if it is 1.0 or greater. K SH K SC K N = 27.6 P P = Superheat correction factor, from ASME Sec. I Table PG-68.7M = Supercritical correction factor, from ASME Sec. I Table PG M Capacity formula for USCS Units: W C = certified flow capacity [lb/hr] A P K K N W C = K x 51.5 x A x P x K N x K SC x K SH = flow area [in²] = (1.03 set pressure ) psia or (set pressure ) psia, whichever is greater = coefficient of discharge = Correction factor for the Napier equitation for pressures over 1500 psig and up to 3200 psig, which shall be used only if it is 1.0 or greater. K N = P P K SH = Superheat correction factor, from ASME Sec. I Table PG-68.7 K SC = Supercritical correction factor, from ASME Sec. I Table PG Formula for restricted lift calculation W RL = W C x / L FR (acc. to ASME Sec. I, PG (f)) = W RL / W C x L FR > L FR x 0.3 or > 0.08 in or 2 mm W RL = = restricted relieving capacity [kg/hr] or [lb/hr] restricted lift [mm] or [in] L FR = full rated lift [mm] or [in]
5 Restricted lift The lift of a valve may be restricted to prevent oversizing. Oversizing may cause valve chattering. IMI Bopp & Reuther recommends a lift restriction, if the relieving capacity is more than 15% above the required capacity. The restricted capacity can also be beneficial for silencer sizing. Valves shall not have their lifts restricted to a value less than 30% of the full rated lift, but limited to a minimum lift of 0.08 in or 2 mm. 1,0 Coefficient of Discharge K d [...] 0,9 0,8 0,7 0,6 0,5 0,4 0,3 The lift shall not restricted to a value less than 30% of full rated lift or 0.08 (2,0 mm). (The larger value shall be used) Full rated lift: max. coefficient of discharge: K d = ,2 0,1 0, Lift [%] Sample size calculation acc. to ASME Sec. I Fluid Saturated steam Set pressure 10.0 MPa g Relieving pressure P at 3% accumulation (10.0 x 1.03) = MPa a Required capacity kg/hr For saturated steam K SC and K SH are not applicable and not K N with the given set pressure. A required = W C / (K x 51.5 x P) = / (0.826 x 51.5 x ) = 1020 mm² The nearest suitable Si 9 series flow area is 1257 mm² and the possible valve selection: 4 A NPS 2 Cl. 900 x NPS 3 Cl. 300 Orifice J2 The certified flow capacity for this valve is kg/hr. In order to limit the 23% overcapacity a lift restriction is recommended. L FR = 12.0 mm for the selected valve = W RL / W C x L FR = kg/hr / kg/hr x 12 mm = 9.74 mm = 10.0 mm > L FR x 0.3 > 2 mm The Lift of the valve may be restricted to 10.0 mm to better meet the required capacity. The restricted capacity W RL = kg/hr. 5
6 Material code B Test gag: Blocking of the safety valve for pressure testing the pressure system.
7 Material code Temperature application range 800 F /427 C 1094 F /590 C 1202 F /620 C Part Name Spare part Material Material Material 1 Body Carbon steel 2 Inlet nozzle flanged Carbon steel SA-105 1) 3 Stud SA-193 Gr. B7 SA-217 WC9 SA-182 F22 Cl.3 1) SA-193 Gr. B16 SA-217 C12A SA-182 F91 1) SA-193 Gr. B16 4 Hexagonal nut Steel SA-194 Gr. 2H Steel SA-194 Gr. 2H Steel SA-194 Gr. 2H 5 Guide bushing *1 Stainless steel Stainless steel Stainless steel 6 Lift collar *3 Stainless steel Stainless steel Stainless steel 7 Disc *2 Stainless steel 1) SA-182 F22 Cl.3 1) SA-182 F91 1) 9 Vent plug Stainless steel Stainless steel Stainless steel 10 Circlip Spring steel Spring steel Spring steel 11 Intermediate piece Carbon steel SA-105 SA-182 F2203 SA-182 F91 12 Sliding bushing *1 Stainless steel Stainless steel Stainless steel 13 Spring washer, bottom Carbon steel Carbon steel Carbon steel 14 Spring washer, top Carbon steel Carbon steel Carbon steel 15 Yoke Carbon steel Carbon steel Carbon steel 16 Adjusting screw Carbon Steel Carbon Steel Carbon Steel 17 Adjusting screw nut Steel Steel Steel 18 Spindle *3 Stainless steel Stainless steel Stainless steel 19 Holding ring Stainless steel Stainless steel Stainless steel 20 Cylinder screw Steel Steel Steel 21 Thrust bearing Steel Steel Steel 22 Guiding cap Carbon steel 23 Lifting lever (cap) Carbon steel Carbon steel Carbon steel 24 Lifting nut Steel Steel Steel 25 Cylinder screw Steel Steel Steel Carbon steel Carbon steel 26 Trim spring washer, bottom Carbon steel Carbon steel Carbon steel 27 Trim spring washer, top Carbon steel Carbon steel Carbon steel 28 Adjusting screw Stainless steel Stainless steel Stainless steel 29 Adjusting screw nut Stainless steel Stainless steel Stainless steel 30 Spring *3 31 Trim spring *3 34 Drain plug Stainless steel Stainless steel Stainless steel Notes: 1) Part is hardfaced Spare Parts: *1 Expendable parts, should be replaced as part of any revision if a damage is visible. *2 Rework spare parts, should be replaced if a rework is no longer possible. *3 Long life spare parts, replacement may be required after several years of operation. IMI Bopp & Reuther reserve the right to technical changes or application of higher quality materials without prior notice. The material design can be tailored to customer specifications at any time upon request. 7
8 x.83b Material code
9 x.83b Material code Temperature application range 800 F /427 C 1094 F /590 C 1202 F /620 C Part Name Spare part Material Material Material 1 Body Carbon steel SA-217 WC9 SA-217 C12A 2 Inlet nozzle flanged Carbon steel SA-105 1) SA-182 F22 Cl.3 1) SA-182 F91 1) 3 Stud SA-193 Gr. B7 SA-193 Gr. B16 SA-193 Gr. B16 4 Hexagonal nut Steel SA-194 Gr. 2H Steel SA-194 Gr. 2H Steel SA-194 Gr. 2H 5 Guide bushing *1 Stainless steel Stainless steel Stainless steel 6 Lift collar *3 Stainless steel Stainless steel Stainless steel 7 Disc *2 Stainless steel 1) SA-182 F22 Cl.3 1) SA-182 F91 1) 9 Lift stop Stainless steel Stainless steel Stainless steel 10 Circlip Spring steel Spring steel Spring steel 11 Intermediate piece Carbon steel SA-105 SA-182 F2203 SA-182 F91 12 Sliding bushing *1 Stainless steel Stainless steel Stainless steel 13 Guide bushing *1 Stainless steel Stainless steel Stainless steel 14 Intermediate bottom plate Carbon steel SA-105 SA-182 F2203 SA-182 F91 15 Intermediate top plate Carbon steel SA-105 Carbon steel SA-105 SA-182 F91 16 Pressure ring Steel Steel Steel 18 Spindle *3 Stainless steel Stainless steel Stainless steel 19 Hexagonal nut Steel SA-194 Gr. 2H Steel SA-194 Gr. 2H Steel SA-194 Gr. 2H 20 Adjusting screw Steel Steel Steel 21 Top plate Carbon steel SA-105 Carbon steel SA-106 Carbon steel SA Intermediate column Carbon steel SA-105 Carbon steel SA-106 Carbon steel SA Lifting lever Carbon steel Carbon steel Carbon steel 24 Lifting nut Steel Steel Steel 25 Rod Stainless steel Stainless steel Stainless steel 26 Trim spring washer, bottom Carbon steel Carbon steel Carbon steel 27 Trim spring washer, top Carbon steel Carbon steel Carbon steel 28 Adjusting screw Steel Steel Steel 29 Adjusting screw nut Steel Steel Steel 30 Spring *3 31 Trim spring *3 32 Cylinder screw Steel Steel Steel 33 Hexagonal nut Steel Steel Steel 34 Drain plug Stainless steel Stainless steel Stainless steel Notes: 1) Part is hardfaced. Spare Parts: *1 Expendable parts, should be replaced as part of any revision if a damage is visible. *2 Rework spare parts, should be replaced if a rework is no longer possible. *3 Long life spare parts, replacement may be required after several years of operation. IMI Bopp & Reuther reserve the right to technical changes or application of higher quality materials without prior notice. The material design can be tailored to customer specifications at any time upon request. 9
10 Valve data: Maximum set pressure Inlet size Orifice designator Outlet size Maximum Set Pressure [bar g] Inlet class Maximum Set Pressure [psig] Inlet class NPS d 0 NPS F F G G H H J J K K K K L M N N P P P Q Q Q R R T T T V W W Valve data: Flange pressure rating Inlet size Orifice designator Outlet size ASME Inlet class ASME Outlet class NPS d 0 NPS F F G G H H J J K K K K L M N N P P P Q Q Q R R T T T V W W
11 Valve data Inlet size Orifice designator Outlet size Center to face dimension Height Dismantling height Weight S2 S1 [mm] [in] H [mm] [in] Inlet class NPS d 0 NPS F F G G H H J J K K K K L M N N P P P Q Q Q R R T T T *1 - *1 - - * V W * W *1 subject to detail engineering Hd [mm] [in] [kg] [lb m ] x.83b S2 S2 H1 H1 Hd Hd S1 S1 11
12 IMI Bopp & Reuther Bopp & Reuther Sicherheitsund Regelarmaturen GmbH Carl-Reuther-Straße Mannheim Deutschland Tel: +49 (0) Fax: +49 (0) imibur.sales@imi-critical.com MECESA - Mecánica Egarense S.A. Joan Monpeó , Barcelona Spain Tel: Fax: mecesa@mecesa.com dturmo@mecesa.com
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