Size Range : 2″ to 24″ Flanged
- 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.
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- 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.
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| 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 | —– |
