DIFFERENTIAL PRESSURE REGULATING VALVE zcon

Transcription

1 DIFFERENTIAL PRESSURE REGULATING VALVE zon Body material pressure diameter Max. temperature Brass DN according to the pressure equipment directive 2014/68/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: kpa, kpa for Dn kpa, kpa for DN32-50 face to face dimension according to DIN3202 M4 APPLIATION industries EATING REFRIGERATION AND AIR ONDITIONING media INDUSTRIAL WATER NEUTRAL FLUIDS 1 / 7

2 MATERIALS, DIMENSIONS Body material Type 55,56,65,66 1 Body uzn36pb2as 2 over uzn36pb2as 3 Disc uzn36pb2as 4 Seal of the disc EPDM 5 Stem uzn36pb2as 6 Diaphragm EPDM 7 O-ring EPDM 8 Spring X17rNi and wheel ABS 10 Measuring nipples G 1 /4 uzn36pb2as Max. temperature 120 DN /2 3 / /4 1 1 /2 2 L () () G (inch) G 1 /2 G 3 /4 G 1 G1 1 /4 G1 1 /2 G 2 A () B () () 15,0 16,5 19,5 21,4 21,4 25,7 S () Dk () Weight (kg) 1,05 1,20 1,40 2,25 2,60 3,25 2 / 7

3 PRESSURE-TEMPERATURE RATINGS Acc. EN PN -10⁰ 120⁰ uzn36pb2as 16 SELETION AND RANGE OF DPRV 1,2 The lowest pressure drop required for proper work of DPRV Min. pressure drop on DPRV [bar] 1 0,8 0,6 0,4 0,2 DN15 DN20 DN Flow rate [m3/h] The lowest pressure drop required for proper work of DPRV 1,2 Min. pressure drop on DPRV [bar] 1 0,8 0,6 0,4 DN32 DN40 DN50 0, Flow rate [m3/h] 3 / 7

4 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 PLnom ( nom). DN Kvmin (m 3 /h) 0,1 0,2 0,4 0,5 0,65 1,0 Kvnom (m 3 /h) 1,4 2,0 3,0 7,5 9,5 15,0 Kvmax (m 3 /h) 2,5 3,5 6,0 14,5 19,7 31,2 To guarantee sufficient authority of DPRV, available pressure ΔPdyspoz should be at least 1.5 times greater than the pressure drop in circulation Pinstal 4 / 7

5 INSTALLATION AND REGULATION Install the valve so that the direction of flow of the medium matches the arrow on the body - correct operation of the valve requires the appropriate length of straight sections: 5 x DN before and 2 x DN after the regulator, 10 x DN before if there is a pump - regulators can be mounted in any position In the drawing above, the pressure drop over the balance valve Fig. 221 is not taken into account in the stabilized cycle. 5 / 7

6 INSTALLATION AND REGULATION Setting the DPRV with the presetting valves : 1. 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.221, item. 2, and the measuring nipples item. 4 of DPRV. 5. If the flow rate on a balancing valve Fig.221 is different from the design value, reset ΔPinstal to get on the valve in Fig.221 design value of flow rate. Because the installation has of the inertia, wait a few minutes to read the measured values. Due to the inertia of the system, wait a few minutes to read the measured values. For DN For DN Pinstal [ kpa ] 10 0,0 15 3,0 20 6,0 Turn [ kpa ] [ kpa ] 25 9,0 0, ,0 1,3 35 2,7 40 4,0 45 5,3 50 6,7 55 8,0 60 9, , ,0 Pinstal [ kpa ] 20 0,0 25 1,3 30 2,5 35 3,8 Turn [ kpa ] [ kpa ] 40 5,0 0,0 45 6,3 1,0 50 7,5 2,0 55 8,8 3, ,0 4,0 65 5,0 70 6,0 75 7,0 80 8,0 85 9, ,0 6 / 7

7 TYPE Figure Body material diameter pressure Type 223 Brass uzn36pb2as differential pressure 0,25-0,7 bar, disc with EPDM rings differential pressure 0,1-0,3 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 Figure Body material diameter pressure Type 223 Brass uzn36pb2as differential pressure 0,25-0,7 bar, disc with EPDM rings Order example acc. index Differential pressure regulating valve, Y-type, threaded 223 Brass uzn36pb2as diameter () 025 pressure PN 16 Differential pressure 0,25-0,7 bar, disc with EPDM rings 56 7 / 7