Hygienic Stainless Steel Composite Valve

The ideal choice for the discharge and volumetric dosing of powders, particularly in pack-off system

The Mucon range of stainless steel hygienic composite valves offers an outstanding technological solution to the handling and control of powders and granules. The Mucon range is manufactured to exacting tolerances and finished to the highest, most stringent hygienic requirements.

Mucon stainless steel hygienic composite valves have been specifically designed for use in the Pharmaceutical, Food and Dairy sectors, where the utmost level of hygiene is paramount.

Principle of Operation

The Mucon Oyster Composite valve is designed to dispense product volumetrically in order to achieve accurate feed weights. Product discharge occurs in two phases:

  1. The bulk discharge phase during which the main leaf is opened by a pneumatic actuator and the valve works like a butterfly valve. As the target weight is approached, the main leaf is closed.
  2. The fine dosing phase during which the main leaf remains closed and the dosing ball is operated by means of a pneumatic 180° actuator. As the ball rotates back and forth, it’s lobed surface dispenses product volumetrically in small amounts, enabling a very accurate target weight to be achieved.


  • Valve Body – 316L stainless steel Gasket Seals – Silicone, EPDM, FKM (Viton®), PTFE, MFKM and other FDA approved elastomers
  • Other components are produced in AISI 304
  • Internal High Polish Finish – RA <0.4µm or to specific customer requirements
  • External Polish Finish – RA <1.2µm or to specific customer requirements


  • ATEX certification to II 2GD c IIB T4/T135°C (Ask for other zones)
  • Suitable for CIP and SIP
  • Wide variety of connections available including; TC BS 4825-3, TC ASME BPE, TC DIN32676, TC ISO2852, TC OSAME A, Weld End, Mounting Collar, Compact Series


  • Ideal for packing and weighing systems where a high level of accuracy and hygiene is a necessity
  • Any fine dosing application


  • All Mucon Oyster hygienic valves are designed according to cGMP standards, for trouble free operation and easy maintenance.
  • The valve design ensures optimal hygienic and functional characteristics and eliminates recesses with hard-to-clean corners.
  • Mucon not only provides a wide range of standard sizes, but is equally willing to work with customers to design and build bespoke products. It is possible to choose materials, dimensions and sealing arrangements to specifically meet our customers exacting requirements.
  • Available in sizes (leaf/ball) DN150/65, DN200/80, DN250/80 and DN300/80
  • A variety of seal materials is available to suit your application
  • The ball can be fitted with a ‘bridge breaker’ to help promote the flow of material into the lobes and through the valve
  • Dosing ball can be co-molded to achieve an improved seal when the valve leaf is closed, and the ball is at rest.

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