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OUR SERVICES

WM Diaphragm Valve
Rolling Stone Idler
Valves
Locomotives
Pumps

REPAIRING

We specialize in the manufacturing, repairing and designing valves, locomotives and mining equipment.

CONTACT US

Tel: 011 412 4536
Cell: 082 821 1910
Email: info@minetrack.co.za

KNIFE GATE VALVES

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Valve Information

  • Cost saving - Low maintenance.
  • Top works protected for robust applications.
  • Double flanged.
  • Supporting seal fitted to gland seal for longer life on gland seal.
  • Valves do not need to be removed from the line as the gland seal allows for ad justment and replacement while in the line.
  • All resilient seal linings offer ‘no’ leakage on gas , powders and liquids .
  • Our design offers positive seating at all times preventing ‘cavity’ on the bottom where solids accumulate.
  • The self cleaning section prevents slurry or solid build up that allows free movement of the blade at all times.

TAP VALVE MANUFACTURERS VALVES have been designed for higher pressures.

SPECIFICATIONS SHEET

Size

Unlined
Std face

Lined
Std Face

Length
(mm)

Pressure Rat ing
(bar)

Mass
(kg)

           
50 40 46 430 12 10
80 44 50 430 12 10
100 59 62 460 12 12
150 70 78 560 12 25
200 72 80 740 12 32
250 76 84 900 10 48
300 80 88 1050 10 78
350 96 104 1170 8 89
400 100 108 1320 8 120
450 100 112 1460 7 225
500 110 122 1630 7 260
600 110 122 1850 7 320
700 110 122 2050 7 410
750 120 132 2160 7 455
800 120 132 2270 7 510
1000 130 142 2750 7 720

REPLACEMENT OF GLAND PACKING:

  • Depressurise the circuit and place the valve in close position.
  • Rising stem valves. Release the spindle or stem from the gate.
  • Loosen the screws of the yoke and remove it.
  • Loosen the nuts of the gland follower and remove it.
  • Remove the old packing rings and clean the stuffing box.
  • Insert the new packing rings making sure that the ring joints alternate.
  • Once the necessary packing rings have been inserted, proceed with a steady initial tightening of the gland follower.
  • Fix the stem to the gate.
  • Remount the gate guards.
  • Carry out some operations with a loaded circuit and then retighten the gland follower to prevent leakage.
Body Cast Iron • Carbon Steel • Stainless Steel
Blade Stainless Steel 304/314
  Rocklast Hardened Material
Hand Wheel Cast Iron
Lining Natural Rubber • EP DM • Polyurethane
Gland Cast Steel
Pillar Cast Steel
Spindle 304 Stainless Steel
Rev Nut Bronze Lg2
   
Lubrication Recommendation - twice yearly.
  Remove protection cap, fill stem protector cap half way with calcium
based grease.
   
Grease Characteristics High water resistant, low ash content and excellent adherence.
   
Storage Store in well ventilated room.
  Valves should not be exposed to temperatures higher than 300 C.
  If stored outside, cover valve and protect from heat and direct sunlight.

Information required to quote.

Size of Bore • Working pressure • Temperature • Table drilling • Operation (Handwheel, Gearbox or Actuator) Media (Chemical, slurry etc.)


Enquiries

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