DIFFERENTIAL PRESSURE REGULATING VALVE

Transcription

1 Y- DIFFERENTIAL PRESSURE REGULATING VALVE zon body material pressure diameter max. temperature brass 6 bar -50 according to the pressure equipment directive 4/68/UE does not require E marking FEATURES compact construction environment - friendly balancing disc adjustable differential pressure measurement differential pressure movement of the locking function ranges of settings: 0- kpa, -70 kpa for kpa, kpa for face to face dimension according to DIN32 M4 APPLIATION heating refrigeration and air conditioning industrial water neutral fluids /8

2 Y- MATERIALS body material 55,,65,66 body uzn36pb2as 2 disc uzn36pb2as 3 seal of the disc EPDM 4 retaining ring uzn36pb2as 5 measuring nipples uzn36pb2as 6 o-ring 7 diaphragm 8 support SPETOBAR BAS bonnet uzn36pb2as 0 o-ring EPDM hand-wheel - scale 2 nut spring 3 hand-wheel 4 retaining ring stem uzn36pb2as 6 spring X7rNi6-2 EPDM EPDM + X5rNi8-0 polyamide uzn36pb2as polyamide A2 max. temperature 2/8

3 Y- DIMENSIONS G A B L S Dk kg G/2 7, ,05 G3/4 7 6, , G 7 9, ,40 32 G ¼ 06 2, , 40 G ½ 06 2,4 2 2,60 50 G2 06, , 3/8

4 Y- SELETION AND RANGE OF DPRV The lowest pressure drop required for proper work of DPRV minimal pressure drop on DPRV [bar],2 0,8 0,6 0,4 0, Flow rate [m /h] The lowest pressure drop required for proper work of DPRV minimal pressure drop on DPRV [bar], ,8 0,6 0,4 0, Flow rate [m3/h] 4/8

5 Y- SELETION AND RANGE OF DPRV For calculation of DPRV the graphs listed above should be used, based on flow rate and pressure difference. For calculation make sure that at any point of the installation maximum flow in the circuit does not exceed the recoended value. The scale on the hand-wheel indicates the pressure drop ΔPLnom. Kv min Kv nom Kv max 0,,4 2,5 0,2 2,0 3,5 0,4 3,0 6,0 32 0,5 7,5 4,5 40 0,65 9,5 9,7 50,0,0 3,2 To guarantee sufficient authority of DPRV, available pressure ΔPdyspoz should be at least.5 times greater than the pressure drop in circulation ΔPinstal 5/8

6 Y- INSTALLATION AND REGULATION DPRV is mounted on the return pipe, according to the flow direction arrow Pinstal heating installation Fig.22 Supply Return Fig. Setting the DPRV with the presetting valves :. Fully open all balancing valves 2. Set all valves at the end receivers on the design flow. 3. Set the differential pressure using of hand-wheel - number of rotations is given in Table Measure the pressure difference Δpinstal - using the Balancing Measuring Device T550, connecting it to the measuring nipples in Fig.22, item. 2, and the measuring nipples item. 4 of DPRV. 5. If the flow rate on a balancing valve Fig.22 is different from the design value, reset ΔPinstal to get on the valve in Fig.22 design value of flow rate. Because the installation has of the inertia, wait a few minutes to read the measured values. 6/8

7 Y- INSTALLATION AND REGULATION For For - Turn Pinstal {kpa} 0-kPa 0 0,0 3,0 6,0 9,0 0,0 2,0,3-70kPa Turn Pinstal {kpa} -60kPa 0,0,3 2,5 3,8 40 5,0 0,0 45 6,3, kPa 2,7 50 7,5 2,0 40 4,0 55 8,8 3,0 45 5,3 60 0,0 4,0 50 6,7 55 8,0 60 9,3 65 0,7 70 2,0 65 5,0 70 6,0 75 7,0 80 8,0 85 9,0 90 0,0 Pressure [bar] PRESSURE - TEMPERATURE RATINGS Temperature [ ] 7/8

8 Y- TYPES body material brass diameter pressure PN - 6 bar Tmax 90 differential pressure 0, - 0,7 bar, disc with EPDM rings uzn36pb2as - 6 bar bar bar 66 Tmax Tmax Tmax 90 differential pressure 0, - 0,3 bar, disc with EPDM rings differential pressure 0,4-0,9 bar, disc with EPDM rings differential pressure 0,2-0,6 bar, disc with EPDM rings ORDERING To place an odrer please use our product number ( Index) Body material diameter pressure PN 0 ORDER EXAMPLE 0 differential pressure regullating valve,y-, brass uzn36pb2as 0 diameter pressure PN6 differential pressure 0, - 0,7 bar, disc with EPDM rings 8/8