Size Range : 2″ to 24″ Flanged

Features

  • Pressure sustaining valve is utilized when installing pipes for users. It primarily matches up with the minimum working pressure inside the tap water pipe, balancing up-stream and down-stream pressure during normalcy and emergency, and maintains constant pressure inside the pipe.
  • Pressure sustaining valve can sustain the maximum working pressure inside the pipe when installed in water supply areas.
  • Pressure adjusting range : 0.2 ~ 4 kgf/cm ,3 ~ 10 kgf/cm , (1 kgf/cm  = 14.2 psi)
  • The working pressure should be greater than 0.3 kgf/cm2 and gate fully open with 1.5 kgf/cm2, please check the pressure before installation.
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 Sustaining Valve STD. 01
Dimensions :(All Dimensions are in mm)
Valve Model Valve Size Port A L CV Weight (Approx.)
MM Inch
DSF – 50 50 2″ 60 186 190 75 9.180
DSF – 65 65 2.1/2″ 69 196 210 105 11.960
DSF – 80 80 3″ 84 211 225 140 17.580
DSF – 100 100 4″ 110 223.5 250 260 23.340
DSF – 125 125 5″ 134.5 242 280 390 49.560
DSF – 150 150 6″ 158.5 256.5 309.5 550 49.560
DSF – 200 200 8″ 208.5 303 419 1000 92.300
DSF – 250 250 10″ 257 336 473 1699 124.320
DSF – 300 300 12″ 302 370 532 2200 196.840
DSF – 350 350 14″ 324 415 598.4 3000 264.900
DSF – 400 400 16″ 345 413 634 4000 278.600
DSF – 450 450 18″ 472 497 766 5300 457.000
DSF – 500 500 20″ 472 493 772.7 6100 491.450
DSF – 600 600 24″ 589 533 900 9200 —–