WM Diaphragm Valve
Rolling Stone Idler
Valves
Locomotives
Pumps
We specialize in the manufacturing, repairing and designing valves, locomotives and mining equipment.
Tel: 011 412 4536
Cell: 082 821 1910
Email: info@minetrack.co.za
Applicat ions: Water Chemicals
Epwin Wafer Check Valves are now 100% locally manufactured. The Epwin
Wafer Check Valve provides a most reliable and effective method to check
Back Flow in fluid lines. The compact design provides considerable space
saving compared to conventional non-return valves. Wafer Check Valves
are easily installed between two flanges. Epwin Wafer Check Valves are
designed generally to meet the requirements of API 6 D for the ANSI size
range, and DIN 3202 and ISO 5752 for the metric size range, with metal to
metal drip tight sealing. The design incorporates a unique torsion spring
which ensures quick closing of the clapper at the instant of flow loss, so
preventing flow reversal build up and resultant water hammer. Excellent
sealing, minimized pressure loss and low opening pressures are features
of Epwin Wafer Check Valves which are manufactured under a rigorous
Quality Assurance Program. Single door action ensures full flow of media
with less working parts and less points of failure, which lengthen the life
span of the valve.
Mater ials of construct ion (Minimum Specifications)
Component | Specificat ion |
Body | SABS 936-SG42 (S,G, Iron) • Stainless Steel 316 |
Cast Steel • Alloy 20 | |
Clack | Stainless Steel 316 • Alloy 20 |
Spindle | Stainless Steel 316 • Alloy 20 |
Seat | Stainless Steel 316 • Alloy 20 • Stelite |
Soft seal ‘O’-Ring | Butyl • Nitrile • PTFE • Natural Rubber • Neoprene |
EPDM (Ethylenepropylene terpolymer) |
Size |
ANSI 150 |
ANSI 300 |
PN 10 |
PN 16 |
PN 40 |
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D |
D |
d |
F |
D |
d |
F |
D |
d |
F |
D |
d |
F |
D |
d |
F |
50 | 110 | 38 | 60 | 110 | 38 | 60 | 110 | 38 | 43 | 108 | 38 | 60 | |||
80 | 148 | 52 | 73 | 148 | 52 | 73 | 148 | 52 | 49 | 143 | 52 | 73 | |||
100 | 174 | 75 | 73 | 180 | 75 | 75 | 163 | 75 | 56 | 169 | 70 | 64 | |||
150 | 220 | 120 | 98 | 248 | 120 | 98 | 219 | 120 | 70 | 255 | 110 | 76 | |||
200 | 278 | 165 | 127 | 274 | 160 | 71 | 292 | 155 | 89 | ||||||
250 | 338 | 205 | 146 | 330 | 190 | 76 | 354 | 190 | 114 | ||||||
300 | 406 | 240 | 181 | 384 | 230 | 83 | 417 | 225 | 114 |