Size Range : 2″ to 24″ Flanged

Features

  • Pressure relief valve is installed on the outlet pipe of water supply pipeline. It can maintain safe water supply pressure inside the pipe and prevent pipeline and equipment damage caused by accidental escalation of water pressure.
  • When water pump stops functioning or pipeline gate suddenly closes, abnormal pressure forms inside the pipe. As the pressure gets over a certain the water high pressure. When pressure returns to safety value, pressure relief valve will auto-matically close to ensure the safety of equipment.
  • Pressure Adjusting Range : 0.5 kgf/cm2 ~ 10 kgf/cm2 7 kgf/cm2 ~ 20 kgf/cm2
  • Applied Temperature : -15 ~ 100 OC 100 ~ 180 OC ( For Steam )
  • Valve Body Testing Pressure : 35 kgf/cm2 ( 1 kgf/cm2 = 14.2 psi )
  • Maximum Applied Pressure : 25 kgf/cm2   the outlet opens, the valve of the pressure gauge will decrease.
No. Description Material Qty.
1 Body WCB / C.I. / D.I. / CF8 / CF8M 01
2 Cover Stainless Steel 304 / 316 01
3 Plug Stainless Steel 304 / 316 01
4 Piston Stainless Steel 304 / 316 01
5 Piston Guide Stainless Steel 304 / 316 01
6 Spring For Piston S. S. 304 01
7 Piston Cover Lock Bolt S. S. 01
8 V – Seal For Piston NBR / Viton / EPDM 01
9 Piston Seat Ring NBR / Viton / EPDM 01
10 Flat Ring NBR / Viton / EPDM 01
11 O – Ring For Piston Guide NBR / Viton / EPDM 01
12 O – Ring For Piston Lock Bolt NBR / Viton / EPDM 01
13 Pilot PLV Valve STD. 01
Dimensions : (All Dimensions are in mm)
Valve Model Valve Size Port A L CV Weight (Approx.)
MM Inch
DRF – 50 50 2″ 60 186 190 75 12
DRF – 65 65 2.1/2″ 69 196 210 105 15
DRF – 80 80 3″ 84 211 225 140 18
DRF – 100 100 4″ 110 223.5 250 260 24
DRF – 125 125 5″ 134.5 242 280 390 32
DRF – 150 150 6″ 158.5 256.5 309.5 550 44
DRF – 200 200 8″ 208.5 303 419 1000 87
DRF – 250 250 10″ 257 336 473 1699 152
DRF – 300 300 12″ 302 370 532 2200 202
DRF – 350 350 14″ 324 415 598.4 3000 265
DRF – 400 400 16″ 345 413 634 4000 279
DRF – 450 450 18″ 472 497 766 5300 457
DRF – 500 500 20″ 472 493 772.7 6100 492
DRF – 600 600 24″ 589 533 900 9200 —–