| 
 ‘s
Pinch Valve supports the rubber sleeve at all
times. When the valve is in open or closed position,
the
sleeve is fully supported by the metal housing and
can’t
be punctured in the fully stretched closed position.
The
pressure is therefore taken up by the valve body and
not
the sleeve. This provides a greatly improved response
curve. The mechanical advantage
gained reduces the thrust
required to operate the valve.
- The Dual Pinch Valves have enclosed
bodies with easily
replaceable, flexible rubber sleeves.
- Thrust bearing for ease of opening
and closing.
- Long operating life.
- Full bore, low friction loss.
- 100% drip tight closure even
with solids in the
medium.
- Rising Spindle.
- Seals in both directions.
- High flexibility sleeve design
reduces closing forces,
improves recovery to full open position.
- The sleeve is covered by the
body which protects the sleeve from the environment
and sunlight.
- Indicator to show open or closed.
- Dust covers to protect
Spindle.
| Size Range: |
Fabricated Carbon
Steel or Stainless
Steel. |
| Pressure Rating: |
50mm - 800mm pressures please
consult our factory. |
| Temperature: |
to 80°C |
| Body Materials: |
Plate, pipe, flanges, stainless
steel
and rubber.
All valve parts have certified
chemical and physical test reports. |
| Parts: |
Yokenut - Brass.
Spindle - 304 stainless steel.
Sleeve - Linatex or all other types of
rubber.
Body - Mild steel or Stainless steel
(fabricated).
Bonnet - Mild steel or Stainless steel
(fabricated).
Flanges - Mild steel or Stainless steel. |
| Face-to-face: |
Can be varied to accommodate
different lengths of other valves. |
| Lifting Lugs: |
Valves have lifting lugs/holes
sized
and located for safe hoisting of valve
assembly. |
| Testing: |
Valves are tested per SABS
specification certified. |
Showing the sleeve in the closed
position.
|
Dimensions and weights are for guidance only - detailed
dimension drawings available on request. All dimensions
are in millimetres, unless stated.
All types of actuators can be fitted, electric, gearbox,
hydraulic, pneumatic and handwheel.
Dual offers the following alternative sleeve materials,
providing chemical and abrasive resistance to most
media such as:
- Linatex rubber.
- Natural black rubber.
- Neoprene rubber.
- Nitrile rubber.
- EPDM rubber.
- Reduced port sleeve for throttling applications.
Applications:
- Mining and mineral processing
- Power generation
- Sand and gravel
- Chemical and soda ash
- Pulp and paper
- Environmental and Effluent
|
