2 - way valve (NO), pressure relieved (PN 25) VG - external thread VGF - flange
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1 Data sheet 2 - way valve (NO), pressure relieved (PN 25) VG - external thread VGF - flange Description VG and VGF are pressure relieved 2-way normally open (NO) valves, designed to be combined with: - AVT thermostatic actuators - STM safety temperature monitors - STL safety temperature limiters VG In combination with AVT thermostatic actuators, valves can be used primarily: for domestic hot water (DHW) production - Hot water tanks - Storage charge systems - Instantaneous domestic hot water production and in mixing loops and room heating systems as well. VGF Main data: DN -50 k VS 0,4-25 m 3 /h PN 25 Temperature: - Circ. water / glycolic water up to 30 %: C Connections: - Ext. thread (weld-on, thread and flange tailpieces) - Flange Flow and return mounting Ordering Example: Valve DN ; k VS 1,6; PN 25; T max 0 C; ext. thread - 1 VG DN valve Code No: 065B0772 Option: - 1 Weld-on tailpieces Code No: 003H6908 VG, VGF valve Picture DN k VS Connection Code No. (mm) (m 3 /h) 0,4 065B0770 1,0 065B0771 1,6 G ¾ A 065B0772 2,5 065B0773 4,0 Cylindrical external thread acc. to 065B ,3 ISO 228/1 G 1 A 065B ,0 G 1¼ A 065B ,5 G 1¾ A 065B G 2 A 065B G 2½ A 065B0779 4,0 065B ,3 065B ,0 065B0782 Flanges PN 25, acc. to EN ,5 065B B B0785 DEN-SMT/SI VD.HD.U3.02 Danfoss 04/2013 1
2 Ordering (continuous) Accessories Picture Type designation DN Connection Code No. 003H H6909 Weld-on tailpieces H H H H6913 R ½ 003H R ¾ 003H6903 External thread tailpieces 25 Conical ext. thread acc. to EN R 1 003H R 1¼ 003H R 1½ 065F R 2 065F H69 Flange tailpieces 20 Flanges PN 25, acc. to EN H H6917 Service kits Picture Type designation DN (mm) k VS (m 3 /h) Code No. 0,4 003H6869 1,0 003H6870 1,6 003H6871 Valve insert 2,5 003H6872 4,0 003H ,3 003H ,0 003H / 40 / / 16 / 20 / H6876 Technical data Nominal diameter DN k VS value m 3 /h 0,4 1,0 1,6 2,5 4,0 6,3 8 12,5 16/20 1) 20/25 1) Stroke Control ratio > 1:50 Control characteristic Cavitation factor z 0,6 0,55 0,5 Leakage acc. to standard IEC 534 % of k VS 0,02 0,05 Nominal pressure PN 25 Max. differential pressure bar linear Medium Circulation water / glycolic water up to 30 % Medium ph Min. 7, max. 10 Medium temperature C 2 0 Connections Materials Valve body valve tailpieces thread External thread - Flange Weld-on and external thread Flange - Red bronze CuSn5ZnPb (Rg5) Ductile iron EN-GJS LT (GGG 40.3) flange - Ductile iron EN-GJS LT (GGG 40.3) Valve seat Stainless steel, mat. No Valve cone Sealing Dezincing free brass CuZn36Pb2As EPDM Pressure relieve system Piston 1) Flange valve body 2 VD.HD.U3.02 Danfoss 04/2013 DEN-SMT/SI
3 Application principles Installation positions Valves can be installed in any position. Note! Installation positions for AVT thermostatic actuators, STM safety temperature monitors and STL safety temperature limiters have to be observed as well. Please see relevant Data Sheet. Pressure temperature diagram EN-GJS LT (GGG 40.3) PN 25 CuSn5ZnPb (Rg5) PN 25 working area Maximum allowed operating pressure as a function of medium temperature (according to EN and EN ). DEN-SMT/SI VD.HD.U3.02 Danfoss 04/2013 3
4 Sizing Given data: P max = 14 kw t = 20 K p v = 0, bar P max - heating power (kw) t -temperature difference (K) p v - differential pressure across the valve Maximum flow Q max (m 3 /h) through the valve is calculated according to formula: P max 0, ,86 Qmax t 20 Q max = 0,6 m 3 /h k v value is calculated according to formula: Qmax 0, 6 k v p 0, 1 5 V k v = 1,5 m 3 /h Chosen k VS = 1,6 m 3 /h or read from the sizing diagram by taking a line through Q scale (0,6 m 3 /h) and p v scale (0, bar) to intersect k v -scale at 1,5 m 3 /h Chosen k vs = 1,6 m 3 /h Solution: The example selects 1) ext. thread valve VG DN, k VS value 1,6 or 2) flange valve VGF DN, k VS value 1,6 4 VD.HD.U3.02 Danfoss 04/2013 DEN-SMT/SI
5 Design 1. Valve body 2. Valve insert 3. Pressure relieved valve cone 4. Valve stem VG VGF Dimensions L L L L H 2 H H 1 H 1 H 2 H 2 H 2 H H H 1 H H 1 VG DN -25 VG DN VGF DN -25 VGF DN VG DN L H H1 H2 Weight (kg) mm , , , , , ,8 VGF DN L H H1 H2 Weight (kg) mm , , , , , ,1 Note: other flange dimensions - see table for tailpieces L 1 d 2 L 3 L 2 d R k DN R 1) SW d L 1 2) L 2 L 3 k d 2 n mm 1/2 32 (G 3/4A) /4 41 (G 1A) (G 11/4A) /4 63 (G 1¾A) /2 70 (G 2A) (G 2½A) ) Conical ext. thread acc. to EN ) Flanges PN 25, acc. to EN DEN-SMT/SI VD.HD.U3.02 Danfoss 04/2013 5
6 6 VD.HD.U3.02 Danfoss 04/2013 DEN-SMT/SI
7 DEN-SMT/SI VD.HD.U3.02 Danfoss 04/2013 7
8 8 VD.HD.U3.02 Produced by Danfoss A/S 04/2013
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Revision 12 2015 Externally threaded 2- and 3-way zone valves Valves used for control of hot and cold water in climate, heating and ventilation systems. They can also control glycol-mixed water in for
Series 02: DN40 and DN50 Series 01: DN Three-port slipper valves PN6
4 241 Series 02: DN40 and DN50 Series 01: DN 65...150 Three-port slipper valves PN6 VBF21... Three-port slipper valves, PN6, flanged Grey cast iron EN-GJL-250 DN 40...150 k vs 25...820 m 3 /h Angle of
VALFONTA PRESSURE REGULATOR WITHOUT AUXILIARY ENERGY EXCESS PRESSURE VALVE (PRESSURE RELIEF VALVE) MODEL S1 MAIN CHARACTERISTICS
PRESSURE REGULATOR WITHOUT AUXILIARY ENERGY EXCESS PRESSURE VALVE (PRESSURE RELIEF VALVE) MODEL S1 MAIN CHARACTERISTICS The S1 model is self-operated bellows sealed pressure excess valve. This series of
Series 240 Type 3351 Pneumatic On/off Valve
Series 240 Type 3351 Pneumatic On/off Valve Application Shut-off valve with tight shut-off for liquids, gases and vapors according to DIN or ANSI standards Valve size DN 15 to 100 NPS ½ to 4 Pressure rating
Angle Seat Control Valve 7020
Angle Seat Control Valve 72 DN 8 up to DN 8 PN 4 Pneumatically operated control valves for neutral through to highly aggressive media. Integrated positioner Compact design All parts contacting the fluid
Data Sheet T EN
Data Sheet T 8015-1 EN Series 240 Types 3241 1 PSA, -7 PSA, -9 PSA Pneumatic Control Valves Type 3241 PSA Globe Valve Application Control valves for PSA plants (Pressure Swing Adsorption) Valve sizes DN