VD.HC.M1.02 © Danfoss 11/03. 1. Data sheet. Seated valves. VRB 3, VRG 3 ... Suitable for use with AMV(E) 15, 16, 25, 35,. AMV(E) 25 SU/SD and AMV 323, 423,.
Data sheet Seated valves VRB 3, VRG 3 Description VRB, VRG valves provide a quality, cost effective solution for most water and chilled applications. These valves may be used with glycol concentrations of up to 50% . VRG 3 valves: Grey cast iron (GG-25) with external thread. VRB 3 valves: Red bronze (Rg 5) with internal or external thread. Main data: · PN 16 · DN 15 - 50 · Connection: internal or external thread · Suitable for water or glycolic water 2 (-10*) ... 120 °C * At temperatures from -10 oC till +2 oC use stem heater. · Suitable for use with AMV(E) 15, 16, 25, 35, AMV(E) 25 SU/SD and AMV 323, 423, 523 actuators · Compliance with PED directive 97/23/EC. Ordering ** The 3-way valve can be used as a 2-way valve by using the: - closing plug (int. thread) or - closing nut (ext. thread) (see accessories below) 3 - way valves (2-way valves**) Dimensions DN kvs m3/h Int. thread - VRB 3 0.63 065B1411 1.0 065B1412 15 1.6 065B1413 2.5 065B1414 4.0 065B1415 20 6.3 065B1420 25 10 065B1425 32 16 065B1432 40 25 065B1440 50 40 065B1450 Code No. Ext. thread - VRB 3 065B1311 065B1312 065B1313 065B1314 065B1315 065B1320 065B1325 065B1332 065B1340 065B1350 Ext. thread - VRG 3 065B1211 065B1212 065B1213 065B1214 065B1215 065B1220 065B1225 065B1232 065B1240 065B1250 Accessories** Closing plug with gasket for VRB int. thread (GG 25) Type Code No. Closing plug with gasket DN 15 065Z7025 Closing plug with gasket DN 20 065Z7026 Closing plug with gasket DN 25 065Z7027 Closing plug with gasket DN 32 065Z7028 Closing plug with gasket DN 40 065Z7029 Closing plug with gasket DN 50 065Z7030 Closing nut with gasket for VRB / VRG ext. thread (GG 25) Type Code No. Closing nut with gasket DN 15 065Z7001 Closing nut with gasket DN 20 065Z7002 Closing nut with gasket DN 25 065Z7003 Closing nut with gasket DN 32 065Z7004 Closing nut with gasket DN 40 065Z7005 Closing nut with gasket DN 50 065Z7006 SIBC VD.HC.M1.02 © Danfoss 11/03 1 Data sheet Seated valves VRB 3, VRG 3 Ordering (continued) 1) At temperatures from -10 oC till +2 oC use stem heater. 2) - Stuffing box - Gland ring - Instructions Accessories - 3 tailpieces internal thread for VRB / VRG ext. thread (GGG 50) Rp DN Code No. ½ 15 065B4107 ¾ 20 065B4108 1 25 065B4109 1 ¼ 32 065B4110 1 ½ 40 065B4111 2 50 065B4112 Accessories - stem heater 1) Type Stem heater 24 V (AMV/AME 15, 16, 25, 35 and valves DN 15 - 50) Spare parts - stuffing box 2) Type For valves VRB / VRG DN 15 - 50 Code No. 065B2171 Code No. 065B0008 Technical data Nominal pressure Control characteristic Medium Medium temperature Control range Connection PN 16 LOG: port A-AB; LIN: port B-AB Circulation water / Glycolic water up to 50 % 2 (-10) ... 120 °C (from -10 oC ... +2 °C with stem heater) kvs 0.63: min. 30:1 / kvs 1.0 - 4.0: min. 50:1 / DN 20 - DN 50: min. 100:1 VRB 3: internal thread DIN 2999, VRB 3, VRG 3: external thread DIN ISO 228/1 Material: VRG 3 Body Spindle Cone Gasket Grey cast iron EN-GJL-250 (GG-25) Stainless steel Brass EPDM VRB 3 Body Spindle Cone Gasket Red bronze 2.1096.1 (RG5) Stainless steel Brass EPDM Leakage loss at closed valve 2 - way valves (A-AB) 3 - way valves (A-AB) (B-AB) Max. 0.05% of kvs Max. 0.05% of kvs Max. 1% of kvs Pressure temperature diagram PN 16 120 Maximum allowed operating pressure as a function of medium temperature. 2 VD.HC.M1.02 © Danfoss 11/03 SIBC Data sheet Seated valves VRB 3, VRG 3 Max. closing pressure and recommended p (VRB / VRG) Valve Int. Ext. AMV(E) 15 AMV(E) 16 DN thread thread Stroke 500 N 300 N ISO 7/1 ISO 228/1 mm 15 Rp 1/2 G 1 10 16 9 20 Rp 3/4 G 11/4 15 11 4 25 Rp 1 G 11/2 15 6 2 32 Rp 11/4 G 2 15 3 1 40 Rp 11/2 G 21/4 15 2 - 50 Rp 2 G 23/4 15 1 - Actuator type AMV(E) 25 - 1000 N AMV(E) 35, AMV 323 AMV(E) 25 SU/SD - 450 N 600 N max. closing pressure (bar) 16 [16] 16 16 [10] 13 16 [5] 8 9.0 [2.5] 5 6.0 [2] 3 3.0 [0.5] 2 AMV 423, 523 1200 N 16 16 16 12 8 5 NOTE: Max. p is the physical limit of differential pressure the valve will close against. pressure is smaller than 4 bar than the recommended p is the same as closing p. The recommended p is based on the generation of noise, plug erosion etc. Max. recommended p is 4 bar. If max. closing Values in parantheses [ ] are based on the force of the actuator AMV(E) 25 SU/SD only. Valve characteristics Valve characteristics log (2-way) Valve characteristics log/lin (3-way) SIBC VD.HC.M1.02 © Danfoss 11/03 3 Data sheet Installation Disposal Seated valves VRB 3, VRG 3 Hydraulic connections Mount according to flow direction as indicated on valve body, AB is always the outlet port; inlets are A (two port) or A and B (three port). Valve mounting Before mounting the valve be sure that the pipes are clean and free from swarf. It is essential that the pipes are lined up squarely with the valve at each connection and that they are free from vibrations. Install the motorized control valves with the actuator in a vertical or horizontal position but not upside down. Leave sufficient clearance to facilitate the dismantling of the actuator from the valve body for maintenance purposes. The valve must not be installed in an explosive atmosphere or at an ambient temperature higher than 50 °C or lower than 2 °C. It must not be subject to steam jets, water jets or dripping liquid. Note that the actuator may be rotated up to 360° with respect to the valve body by loosening the retaining fixture. After this operation retighten. Hydraulic diagrams for applications of 3-way mixing valves Note the valve must only be used as a mixing valve, and is not suitable for diverting (with one inlet and two outlet ports). Where this function is required, the valve should be mounted in the return line, as Fig. 2. Note that if the pump is installed before the A port of the below valve arrangement, then excessive valve hammering will occur thus causing an overload of the actuator. ð ) )* * ð Fig. 1 Mixing valve used in mixing application. ð * )* ) ð ð Fig. 2 Mixing valve used in diverting application. The valve must be dismantled and the elements sorted into various material groups before disposal. 4 VD.HC.M1.02 © Danfoss 11/03 SIBC Data sheet Seated valves VRB 3, VRG 3 Control valve sizing diagram for fluids SIBC VD.HC.M1.02 © Danfoss 11/03 5 Data sheet Control valve sizing diagram for fluids (continued) Seated valves VRB 3, VRG 3 Examples 1 For fluids with specific gravity of 1 (e.g. water) 2 For fluids with specific gravity different from 1 Design data: Flow rate: 6 m3/h System pressure drop: 55 kPa Locate the horizontal line representing a flow rate of 6 m3/h (line A-A). The valve authority is given by the equation: p1 Valve authority, a = p1 + p2 Where: p1= pressure drop across the fully open valve p2= pressure drop across the rest of the circuit with a full open valve Design data: Flow rate: 6 m3/h of fluid, S.G. 0.9 System pressure drop: 10 kPa For this example, the left hand axis of the diagram must be ignored. Starting from the RH axis, the flow rate of 6 m3/h is located (point E). The intersection of the diagonal line from point E with a vertical line from S.G. = 0.9 gives the starting point for the effective flow rate line F-F. The process then continues as for Example 1, so 10 kPa intersects F-F nearest to the kvs 16 diagonal. The intersection of F-F with kvs 16 gives a valve pressure drop of 12.7 kPa (point G). The ideal valve would give a pressure drop equal to the system pressure drop (i.e. an authority of 0.5): If p1 = p2, a = p1/2* p1 = 0.5 In this example an authority of 0.5 would be given by a valve having a pressure drop of 55 kPa at that flow rate (point B). The intersection of line AA with a vertical line drawn from B lies between two diagonal lines; this means that no ideally-sized valve is available. The intersection of line AA with the diagonal lines gives the pressure drops stated by real, rather than ideal, valves. In this case, a valve with kvs 6.3 would give a pressure drop of 90.7 kPa (point C): 90.7 hence valve authority = 90.7 +55 = 0.62 The second largest valve, with kvs 10, would give a pressure drop of 36 kPa (point D): 36 hence valve authority = 36+55 = 0.395 Generally, for a 3 port application, the smaller valve would be selected (resulting in a valve authority higher than 0.5 and therefore improved controlability). However, this will increase the total pressure and should be checked by the system designer for compatibility with available pump heads, etc. The ideal authority is 0.5 with a preferred range of between 0.4 and 0.7. 6 VD.HC.M1.02 © Danfoss 11/03 SIBC Data sheet Seated valves VRB 3, VRG 3 Dimensions VRB / VRG + AMV(E) 15, 16, 25, 35 G ** G ** Rp * G** Rp (see ordering, part accessories, page 2) VRG 3 / VRB 3 (as 2-way valves) Type DN VRB 15 VRB 20 VRB 25 VRB 32 VRB 40 VRB 50 VRB / VRG 15 VRB / VRG 20 VRB / VRG 25 VRB / VRG 32 VRB / VRG 40 VRB / VRG 50 Connection L L1 H H1 H2 H3 Weight mm mm mm mm mm mm kg *int. Rp 1/2 *int. Rp 3/4 *int. Rp 1 *int. Rp 11/4 *int. Rp 11/2 *int. Rp 2 **ext. G 1 80 - 47 214 - 202 0.7 80 - 55 215 - 203 1.1 95 - 60 215 - 203 1.4 112 - 66 222 - 210 2.0 132 - 75 226 - 214 2.9 160 - 85 232 - 220 4.3 80 128 40 214 64 202 1.0 **ext. G 11/4 80 128 55 215 79 203 1.2 **ext. G 11/2 95 151 60 215 88 203 1.4 **ext. G 2 112 178 66 222 99 210 1.8 **ext. G 21/4 132 201 75 226 110 214 2.5 **ext. G 2 3/4 160 234 85 232 122 220 3.7 * Rp ... internal thread DIN 2999 ** G ... external thread DIN ISO 228/1 VRB / VRG + AMV 323/423/523 Type DN VRB 15 VRB 20 VRB 25 VRB 32 VRB 40 VRB 50 VRB / VRG 15 VRB / VRG 20 VRB / VRG 25 VRB / VRG 32 VRB / VRG 40 VRB / VRG 50 Connection L mm L1 H mm mm H1 mm H2 mm *int. Rp 1/2 80 - 47 266 - *int. Rp 3/4 80 - 55 266 - *int. Rp 1 95 - 60 266 - *int. Rp 11/4 112 - 66 272 - *int. Rp 11/2 132 - 75 276 - *int. Rp 2 160 - 85 282 - **ext. G 1 80 128 40 266 64 **ext. G 11/4 80 128 55 266 79 **ext. G 11/2 95 151 60 266 88 **ext. G 2 112 178 66 272 99 **ext. G 21/4 132 201 75 276 110 **ext. G 2 3/4 160 234 85 282 122 Weight kg 0.7 1.1 1.4 2.0 2.9 4.3 1.0 1.2 1.4 1.8 2.5 3.7 SIBC VD.HC.M1.02 © Danfoss 11/03 7 Data sheet Seated valves VRB 3, VRG 3 8 VD.HC.M1.02 © Danfoss 11/03 SIBCAcrobat Distiller 5.0 (Windows)