Mucon Disc Valve - The Ultimate Shut-off and Isolation Valve

Mucon Disc Valves are proven high quality isolation valves, with the ability to shut-off against a flow of powder without jamming or leaking.

Mucon Disc Valve

Mucon Disc Valve

- 12" cast aluminum with pneumatic operation

Mucon Double Disc Valve

Mucon Double Disc Valve

Double Disc Valve on IBC

Mucon Disc Valve

Mucon Disc Valve

- 12" cast aluminum with pneumatic operation

Mucon Disc Valve

Mucon Disc Valve

- 8" pneumatically operated on hopper discharge

Mucon Disc Valve

Mucon Disc Valve

- shown partially open capability

Mucon Disc Valves

The Mucon Disc Valve is available in a range of sizes from 4" to 12" diameter and with both manual and powered operation.

Features Include:

  • Non-jamming action
  • Total shut-off against a flow of material
  • Capable of 40psig below the disc
  • Capable of full vacuum above the disc
  • Full bore opening
  • Dust-tight operation
  • Manual and pneumatic valves available
  • Size range - 4" to 12" diameter
  • Cast iron, aluminum and stainless steel body options


Disc Valve in ActionHow It Works

A free-floating stainless steel disc, supported on a radially acting arm swings across the underside of the orifice through which product flows.  Disposed around the orifice is an angled seat face.  Thus as the disc closes onto the seat it adopts the same angle, resulting in a mild wedging action providing an excellent seal even to the finest of powders.  Disc Valves can either be manually or pneumatically operated.

Since the sliding of the disc over the angled seat is only the minimum required to achieve a seal, mechanical wear is substantially reduced. The absence of any slideways and the use of a radial action ensure that product cannot jam the valve during operation.

The only component breaching the valve body casting is the shaft, which rotates the operating arm.  This is easily sealed by ‘O’ rings or, for high temperature applications, by a stuffing box arrangement and accordingly, no product can escape to atmosphere.

A dovetail groove is machined into the seat face to accept an ‘O’ ring of a material best suited to the application.  ‘O’ rings are particularly required when there is a different pressure across the valve.  Their use is not essential for many applications and metal to metal sealing is used for those involving the highest of temperatures.

The seat face is out of the product flow and the outlet is at least 50mm larger than the inlet diameter.  Both of these features ensure minimum wear to the valve even when used on the most abrasive product.

Disc Valve DrawingManual Operated Mucon Disc Valves

 

Operation:

Hand lever

Size:

100mm (4in), 150MM (6in), 200mm (8in), 300mm (12in).

Body Materials:

Standard - Cast corrosion resistant LM25 Aluminum Alloy, Cast Iron grade 14 or Stainless Steel grade 316 (not 300mm).

Body Finish:

Standard - Aluminum or Stainless Steel are natural finish.  Cast Iron grey primed externally.

Options - Electroless Nickel Plating. Fluorocarbon coating.

Flanges:

Standard - BS 4504 NP 10 (Hole positions only) Equivalent to DIN 2532 (Hole positions only).

Option - Alternative to standard on application.

Disc Material:

Standard - Stainless Steel 316 S12 Grade.  Machine finished.

Radial Arm Material:

Standard - Cast Stainless Steel 316 S17 grade.

Operating Lever and Stop Plate:

Standard - Mild Steel with plated finish (First Generation). Cast Aluminum / Plastic (Second Generation).

Seat Seal:

Standard - Nitrile Rubber O-ring.

Options - Silicone, Viton or PTFE encapsulated Viton Rubber O-ring.

Shaft Seals:

Standard - Nitrile Rubber O-ring.

Options - Viton Rubber O-ring or packed stuffing boxes for high temperature applications.

Temperatures:

Standard - The Disc Valve to the standard specification is suitable for temperatures up to 100°C (212°F).

Option - When fitted with cast iron bearings and silicone seals, the valve is suitable for temperatures of up to 200°C (392°F).  Higher temperatures are possible for certain applications where a face seal is not required.  Consult KEMUTEC for a specific recommendation for any high temperature application.  Valves have been supplied to operate intermittently up to 500°C (1175°F).

Pressure:

Standard - The Disc Valve to standard specification is suitable for differential pressures and vacuums of up to 0.35 Bar (5PSIG) across the seat face provided that pressure relief is possible before the valve is operated in applications where the pressure is on the underside of the disc.

Option - Pressure tested valves available against special request up to a maximum operating pressure 2.7 Bar (45 PSIG) depending upon direction of effective differential pressure and nature of product concerned.  Always consult KEMUTEC for advice.

Air Purge Facility:

Standard - Plugged air purge tappings into Disc recess area.

Weights:

Size Aluminum Cast Iron Stainless Steel
100mm (4in) 10.5kg (23lbs) 24.5kg (54lbs) 30kg (66lbs)
150mm (6in) 15kg (33lbs) 35kg (77lbs) 42kg (92lbs)
200mm (8in) 20kg (44lbs) 45kg (99lbs) 54kg (119lbs)
300mm (12in) 75kg (165lbs) 145kg (319lbs)  

 

 

 

 

 

 

Hand Operated Valve Size Chart

Pneumatically Operated Mucon Disc Valve

Pneumatic Disc Valve Drawing

Operation:

Pneumatic cylinder mounted on a zinc coated steel plate and covered by a glass reinforced plastic cover.

Supply and Consumption: Air Supply: 5.5 Bar (80 PSIG). Clean  lubricated compressed air.

Size:

100mm (4in), 150MM (6in), 200mm (8in), 300mm (12in).

Consumption*:
Size cc/s ft3/min
100mm (4in) 20 0.014
150mm (6in) 60 0.13
200mm (8in) 100 0.22
300mm (12in) 460 1.0
  *The figures are for continuous operation of the valve.
Electric Supply: 110V or 240V 1ph 50Hz or 60Hz depending upon voltage of solenoid valve fitted.

Body Materials:

Standard - Cast corrosion resistant LM25 Aluminum Alloy, Cast Iron grade 14 or Stainless Steel grade 316 (not 300mm).

Body Finish:

Standard - Aluminum or Stainless Steel are natural finish.  Cast Iron grey primed externally.

Options - Electroless Nickel Plating. Fluorocarbon coating.

Flanges:

Standard - BS 4504 NP 10 (Hole positions only) Equivalent to DIN 2532 (Hole positions only).

Option - Alternative to standard on application.

Disc Material:

Standard - Stainless Steel 316 S12 Grade.  Machine finished.

Radial Arm Material:

Standard - Cast Stainless Steel 316 S17 grade.

Operating Spindle: Standard - Stainless Steel 316 S12 grade. Machined finished
Bearings:

Standard - Cast Molybdenum filled Nylon. Machined finished

Options - Cast iron grade 12 for high temperature applications.  PTFE where temperature and corrosive considerations both apply.

Operating Lever and Stop Plate:

Standard - Mild Steel with plated finish (First Generation). Cast Aluminum / Plastic (Second Generation).

Seat Seal:

Standard - Nitrile Rubber O-ring.

Options - Silicone, Viton or PTFE encapsulated Viton Rubber O-ring.

Shaft Seals:

Standard - Nitrile Rubber O-ring.

Options -Silicone, Viton Rubber O-ring or packed stuffing boxes for high temperature applications.

Temperatures:

Standard - The Disc Valve to the standard specification is suitable for temperatures up to 100°C (212°F).

Option - When fitted with cast iron bearings and silicone seals, the valve is suitable for temperatures of up to 200°C (392°F).  Higher temperatures are possible for certain applications where a face seal is not required.  Consult KEMUTEC for a specific recommendation for any high temperature application.  Valves have been supplied to operate intermittently up to 500°C (1175°F).

Pressure:

Standard - The Disc Valve to standard specification is suitable for differential pressures and vacuums of up to 0.35 Bar (5PSIG) across the seat face provided that pressure relief is possible before the valve is operated in applications where the pressure is on the underside of the disc.

Option - Pressure tested valves available against special request up to a maximum operating pressure 2.7 Bar (45 PSIG) depending upon direction of effective differential pressure and nature of product concerned.  Always consult KEMUTEC for advice.

Air Purge Facility:

Standard - Plugged air purge tappings into Disc recess area.

 

Weights:

Size Aluminum Cast Iron Stainless Steel
100mm (4in) 17.5kg (39lbs) 31.5kg (69lbs) 38kg (84lbs)
150mm (6in) 25kg (55lbs) 45kg (99lbs) 54kg (119lbs)
200mm (8in) 30kg (66lbs) 55kg (121lbs) 66kg (145lbs)
300mm (12in) 90kg (198lbs) 160kg (352lbs)  

 

 

 

 

 

Pneumatic Valve Size Chart