PRESSURE RELIEF
VALVE

The Hydrocore™ Symmetrical (area-ratio) Pressure Relief Valve is a unique development as it enables the use of the valve in high pressure applications as well as low pressure applications, without changes to the valve.

The Pressure Relief Valve prevents excessive pressure conditions by discharging fluid from a fluid transfer system into a reservoir or a drain. The valve's piston is in equilibrium state when the opening forces resultant 'Fw' equals the nitrogen gas closing force 'FG' or the spring’s Fuo Fuc force.

HCS PRESSURE RELIEF VALVE.png
PRESSURE RELIEF VALVE - CUT.png
FEATURES
  • Enables the use of the valve in high pressure applications as well as low pressure applications, without changes to the valve.

  • Can suit all valve sizes and pressure ratings.

  • No actuators, pilots or instruments needed.

  • Suitable for low flow (high velocity).

  • Improved anti-cavitation on valve seat area.

  • Increased longevity of valve lifespan.

  • Requires minimal maintenance, consisting of an annual cleaning and greasing of the sealing surfaces inside the valve’s bore. 

  • The pressure relief valves are fully compatible with the isolating valves and can be converted with minimal cost and time.

  • Stainless steel moving internals parts

  • Cast steel body 

  • Low pressure drop across valve

  • Flanges and face-to-face dimensions to customer specification

SPECIFICATIONS
FLOW COEFFICIENTS & FLOW RATES

Pressure rating

Sizes 50NB ~ 100NB: 250 bar (max)

Sizes 150NB ~ 300NB: 160 bar (max)

Temperature rating

Up to 85ºC with standard seals.

Media

Liquid and gas with low content of suspended solids.

Pipe sizes

2” (50 NB) to 16” (400 NB)

Flanges

SABS 1123, BS4504, BS10, ASME B16.34, ANSI B16.5

pH levels & chlorides

Parts of the valve are made from stainless steel and can withstand a low level of chlorides.

Installation position

The valve can be installed in any position

 

Seating

Seat Leakage - B16.104 class III, IV, V or VI, depends on valve type and application.

50 NB

Cv/Kv: 50 | Flow (max): 9 ℓ/sec

80 NB

Cv/Kv: 97 | Flow (max): 25 ℓ/sec

100 NB

Cv/Kv: 132 | Flow (max): 38 ℓ/sec

150 NB

Cv/Kv: 325 | Flow (max): 117 ℓ/sec

200 NB

Cv/Kv: 648 | Flow (max): 152 ℓ/sec

250 NB

Cv/Kv: 871 | Flow (max): 233 ℓ/sec

300 NB

Cv/Kv: 1500 | Flow (max): 337 ℓ/sec

DIMENSIONS AND WEIGHTS
HydrocoreT Specifications - HCS CTRL.png

SIZE

 

50 NB

80 NB

100 NB

150 NB

200 NB

250 NB

300 NB

A (mm)

121

173

202

262

310

378

425

B (mm)

120

172

183

282

329

378

425

#150 F-T-F

 

203mm / 16kg

267mm / 23kg

292mm / 31kg

356mm / 109kg

495mm / 245kg

622mm / 465kg

699mm / 705kg

#300 F-T-F

 

267mm / 18kg

318mm / 28kg

356mm / 41kg

445mm / 131kg

559mm / 275kg

622mm / 498kg

711mm / 755kg

#600 F-T-F

 

292mm / 19kg

356mm / 31kg

432mm / 53kg

559mm / 162kg

660mm / 316kg

787mm / 585kg

838mm / 839kg

#900 F-T-F

368mm / 33kg

381mm / 41kg

457mm / 64kg

610mm / 187kg

737mm / 358kg

838mm / 636kg

965mm / 954kg

#1500 F-T-F

368mm / 33kg

470mm / 51kg

546mm / TBD

705mm / TBD

832mm / TBD

991mm / TBD

1130mm / TBD

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