DRV4 and DRV4G Cast Steel Pressure Reducing Valves

Transcription

1 Local regulations may restrict the use of this product to below the conditions quoted. n the interests of development and improvement of the product, we reserve the right to change the specification without notice. opyright 2013 RV4 and RV4G ast Steel Pressure Reducing Valves T-P H ssue 16 escription The RV4 is a cast steel direct acting bellows sealed pressure reducing valve. The standard version has an PM diaphragm and is suitable for steam, water and air applications. The RV4 is available with a Nitrile rubber diaphragm (suffix 'N') for oil applications. Nitrile rubber soft seated version (suffix 'G', limited to 90 ) is also available for applications that require tight shut-off. t is recommended that for these applications, a maximum pressure turndown ratio of 10:1 is observed. Note: To protect the actuator diaphragm on steam applications a WS4 water seal pot must be installed in the downstream pressure signal line to the actuator. Refer to T-S12-03 for details. vailable types RV4 and RV4G are available in 6 pressure ranges (suffix 1-6). ownstream pressure ranges: Range Valve type ctuator Spring Pressure range PN type colour rating (bar) 1 RV4(G)1(N) 1 or 1N Yellow * RV4(G)2(N) 2 or 2N Yellow ** RV4(G)3(N) 3 or 3N lue RV4(G)4(N) 4 or 4N lue RV4(G)5(N) 5 or 5N lue RV4(G)6(N) 5 or 5N Red * N32 to N50 Range , Range ** Range Sizes and pipe connections N15, N20, N25, N32, N40, N50, N65, N80 and N100 langed N 1092 PN40. JS and SM 150 and SM 300 flanges are also available on request. Pressure / temperature limits Temperature Steam saturation curve Pressure bar g The product must not be used in this region. -- langed N 1092 PN40 and SM langed SM The RV4G is limited to 90. ody design conditions PN40 Maximum design pressure 40 bar 50 Maximum design RV bar g temperature RV4G 37.3 bar g Minimum design temperature 0 Maximum operating RV bar g temperature RV4G 37.3 bar g Minimum operating temperature 0 Note: or lower operating temperatures consult Spirax Sarco Maximum differential pressure N15 - N50 25 bar N65 - N bar esigned for a maximum cold hydraulic test pressure of 60 bar g Note: With internals fitted, test pressure must not exceed 40 bar g Kvs values Size N K vs Note: The K vs values shown above are full capacities and should be used for safety valve sizing purposes where they are required. Page 1 of 6

2 Materials No. Part Material 1 ody ast steel GP 240 GH 2 onnet ast steel N GS 25 3 Valve seat Stainless steel S S29 N15 Stainless steel 4 Seat gasket N20 and N25 Mild steel 5 Valve head N32 to N50 Reinforced exfoiliated graphite RV4 Stainless steel S S29 RV4G (soft seated) Stainless steel / Nitrile S S29 6 Valve head screw N15 and N20 Stainless steel S Valve head seal rlon ush N15 and N20 Stainless steel S S29 9 ush (part of item 10) N25 to N100 Stainless steel S S29 10 alancing bellows assembly N25 to N100 Stainless steel S 316 (L) 11 alancing bellows gasket N25 to N100 Reinforced exfoiliated graphite 12 onnet gasket Reinforced exfoiliated graphite 13 onnet nuts Steel N 267 Pt13 Gr. 8 N15 to N40 M10 14 onnet studs N50 and N65 M12 Steel N 267 Pt13 Gr. 8.8 N80 and N100 M16 15 Pillars Steel zinc plated S M07 16 Pillars nuts Steel zinc plated S 3693 Gr Spring adjuster ast iron zinc plated N 1691 GG Spring(s) hrome Vanadium 19 ush (part of 20) PT / steel composite 20 Sealing bellows assembly Stainless steel S 316(L) 21 Sealing bellows gasket N15 and N20 N25 to N100 Stainless steel 'S' type Reinforced exfoiliated graphite 22 lamp nut N25 to N100 Steel zinc plated S M07 25 Lock-nut N32 to N50 Steel zinc plated S M07 N15 to N25, Steel zinc plated S 3692 Gr Spring plate Steel zinc plated S 1449 Pt1 HR14 27 Needle bearing Steel 28 Setting nut Steel zinc plated S M07 29 earing plate N32 to N50 Steel zinc plated S 1449 Pt1 HR14 30 irclip N32 to N50 Steel zinc plated 31 Mounting plate Steel zinc plated S 1449 Pt1 HR14 32 Housing 33 Housing screws 34 Housing nuts 35 iaphragm iaphragm suffix 'N' Types 1(N) to 4(N) Steel N 1514 St W24 Type 5(N) Steel S N S355 J2G3 Types 1(N) and 2(N) Steel zinc plated S 3692 Gr. 5.6 Types 3(N), 4(N) and 5(N) Steel zinc plated S 3692 Gr. 8.8 Types 1(N) and 2(N) Steel zinc plated S 3692 Gr. 5 Types 3(N), 4(N) and 5(N) Steel zinc plated S 3692 Gr. 8 PM fabric reinforced Nitrile fabric reinforced 36 Hex. headed bolt Stainless steel S Sealing washer ibre 38 iaphragm clamp Stainless steel STM 351 8M 39 Piston Steel zinc plated S 1449 Pt1 HR14 40 Spindle Steel zinc plated S M07 41 Mounting nuts Steel zinc plated S 3692 Gr oupling Steel zinc plated 43 Thread insert N15 and N20 Stainless steel T Self-locking nut N25 to N100 Stainless steel S lamp plate Stainless steel STM L 46 lamp plate gasket Reinforced exfoliated graphite T-P H ssue 16 RV4 and RV4G ast Steel Pressure Reducing Valves Page 2 of 6

3 6 (N15 and N20 only) (N25 to N100) N15 and N N25 (parts 15 and 16 not shown) N32 to N50 T-P H ssue 16 RV4 and RV4G ast Steel Pressure Reducing Valves Page 3 of 6

4 Spare parts for the N15 and N20 valves The spare parts available for sizes N15 and N20 valves are detailed below. No other parts are supplied as spares. The listed parts are for the following valve types: Valve assemblies ctuator assemblies RV4 RV4G Types 1 to 5 Types 1N to 5N Stainless steel seated Nitrile soft seated PM diaphragm Nitrile diaphragm vailable spares oupling iaphragm set iaphragm and sealing washer., Needle bearing Sealing bellows set Sealing bellows assembly, sealing bellows gasket and bonnet gasket.,, G ontrol spring(s) Seat/head set Seat, seat gasket, head, bonnet gasket and head seal. J, K, L, G, H Gasket set Sealing bellows gasket, bonnet gasket and seat gasket., G, K How to order spares lways order spares by using the description given in the column headed 'vailable spares' and state the size and type of valve. xample: 1 - Gasket set for a Spirax Sarco N15 RV41 pressure reducing valve. How to fit spares ull fitting instructions are given in the nstallation and Maintenance nstructions supplied with the spare(s). K L J H G N15 to N20 T-P H ssue 16 RV4 and RV4G ast Steel Pressure Reducing Valves Page 4 of 6

5 Spare parts for the N25 to N100 valves The spare parts available for sizes N25 to N100 valves are detailed below. No other parts are supplied as spares. The listed parts are for the following valve types: Valve assemblies ctuator assemblies vailable spares oupling RV4 RV4G Types 1 to 5 Types 1N to 5N Stainless steel seated Nitrile soft seated PM diaphragm Nitrile diaphragm iaphragm set iaphragm and sealing washer., Needle bearing Sealing bellows set ontrol spring(s) Sealing bellows assembly, sealing bellows gasket, and clamp plate gasket.,, R Seat / head set N25 to N50 Seat, seat gasket, head, self-locking nut, head seal and bonnet gasket. J, K, L, W, H, G Head set alancing bellows set Gasket set N25 to N50 N25 to N50 Head, self-locking nut, head seal, bonnet gasket and balancing bellows gasket. alancing bellows assembly, balancing bellows gasket, bonnet gasket, head seal, self-locking nut, and sealing bellows gasket. alancing bellows assembly, balancing bellows gasket, bonnet gasket, self-locking nut and head seal. Sealing bellows gasket, bonnet gasket, seat gasket and balancing bellows gasket. Sealing bellows gasket, bonnet gasket, balancing bellows gasket and clamp plate gasket. How to order spares lways order spares by using the description given in the column headed 'vailable spares' and state the size and type of valve. xample: 1 - Gasket set for a Spirax Sarco N25 RV41 pressure reducing valve. How to fit spares ull fitting instructions are given in the nstallation and Maintenance nstructions supplied with the spare(s). L, W, H, G, M N, M, G, H, W, N, M, G, W, H, G, K, M, G, M, R J L M K W H W H L G N G N25 to N50 M N R T-P H ssue 16 RV4 and RV4G ast Steel Pressure Reducing Valves Page 5 of 6

6 imensions (approximate) in millimetres langed ctuator type Size N 1092 SM SM PN N N N N N N N N N RV with Type 1 / 1N or Type 2 / 2N actuator 1 Type 3 / 3N and 4 / 4N actuator arrangement Type 5 / 5N actuator arrangement Valve weight (kg) Valve size N15 N20 N25 N32 N40 N50 N65 N80 N100 Yellow spring Weight lue spring Red spring ctuator weight (kg) ctuator type 1 or 1N 2 or 2N 3 or 3N 4 or 4N 5 or 5N Weight Safety information, installation and maintenance or full details see the nstallation and Maintenance nstructions (M-S12-04) supplied with the product. nstallation note: aution - To protect the actuator diaphragm on steam applications a WS4 series water seal pot must be installed in the downstream pressure signal line to the actuator. Refer to T-S12-03 for details. The valve should be mounted vertically downwards in a horizontal pipeline with the direction of flow as indicated by the arrow on the valve body. or applications with downstream temperatures below 125 the valve can alternatively be mounted vertically upwards. How to order xample: 1 off Spirax Sarco N40 RV43 direct acting pressure reducing valve flanged PN40. Note: dd suffix 'N' if the Nitrile rubber diaphragm is required. i.e. RV43N. Note: To calculate the total product weight add the valve and actuator weights together. T-P H ssue 16 RV4 and RV4G ast Steel Pressure Reducing Valves Page 6 of 6