TIMER OPERATED
VALVE
The Hydrocore™ timer operated valve opens or closes the water and compressed air lines to allow for mining operations to resume, on a predetermined weekly timing schedule. The valve can be actuated by various means: hydraulically, pneumatically or electrically.
Saving
The implementation of the timer activated valves has a three month payback period when applied as air/water isolating valves in the gold and platinum mining industries.
Preventing mud rush
Automatic isolation of the water lines in the workings prevents the occurrence of mud rush in the ore-passes, which is typical to pipe bursts during blast shifts or off-mining shifts.


Principles of Operation
The control system consists of two timer switches, operating as follows:
START - Within Normal Shift
Pressing the START button causes both valves to open from this moment to the end of the shift as programmed by timer T1.
START - Out of Normal Shift
Pressing the START button causes both valves to open from this moment to a fixed duration as pre-programmed by timer T2.
STOP - At any time
Pressing the STOP button causes both valves to close at any time
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 â„“/sec
​
80 NB
Cv/Kv: 97 | Flow (max): 25 â„“/sec
​
100 NB
Cv/Kv: 132 | Flow (max): 38 â„“/sec
​
150 NB
Cv/Kv: 325 | Flow (max): 117 â„“/sec
​
200 NB
Cv/Kv: 648 | Flow (max): 152 â„“/sec
​
250 NB
Cv/Kv: 871 | Flow (max): 233 â„“/sec
​
300 NB
Cv/Kv: 1500 | Flow (max): 337 â„“/sec
DIMENSIONS AND WEIGHTS

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