Cora Double Valve ®

Patent pending – Cora Double Valve

The Cora Double Valve is a dosing valve, composed of two intercepting elements. The butterfly is suitable to execute a rough dosing while the small rotor carries out a fine dosing. The maximum accuracy achievable is +/- 20 grams, the valve can be interfaced with dosing and weighing systems. The Cora Double Valve can be supplied with a sealing gasket between the vane and the dosing rotor (DVG). This solution allows the valve to work in applications with pressure up to 0,5 bar. The overall dimensions of the valve remain the same.

Rotor and Dosing Accuracy:

The dosing accuracy of the DOUBLE VALVE and VALVE GASKET is ± 50 grams with 90% of pharmaceutical products. CO.RA. has found a solution to obtain higher dosing accuracy to meet customer requirements. The solution consists of customizing the volume and number of pockets so it can reach a dosing accuracy of ± 10. In these cases, it is necessary to “fine tune” the process by running tests using the customer’s product. These tests can be carried out using either a DOUBLE or a DOUBLE VALVE GASKET that are available as CORA’s Technology Center.


  • No lubricants Sterilizable in autoclave
  • Minimum friction between butterfly valve and seal due reduced contact surface

Technical Features:

  • Satin finish half-bodies in Aisi 316L (DIN 1.4404) polished upon request, butterfly and rotor in mirror Aisi 316L (DIN 1.4404), other components in Aisi 304
  • Gaskets: platinum cured silicone, black silicone, EPDM, PTFE core with white or black silicone, stainless steel mesh
  • Materials: stainless steel and silicone (certificates request) Anodized aluminium pneumatic actuator, stainless request
  • Compressed Air: 6 bar
  • NO O-ring on the shaft
  • Easy to disassemble, inspect and clean
  • Interchangeability with the SANITARY ROTARY (SRF) Very lightweight and compact
  • Ideal for granules and powders
  • Manufactured according to G.M.P.
  • Each valve bears the CO.RA. trademark and identification batch number (ex.: CO.RA. I/00/298/1)

Contact our Valve Specialist Team:

Brendan Merrigan (External) – Mob: 087 2598124                           

Internal Team

Brian Barry – Tel: 021 461 7211

Darragh Rodgers- Tel: 021 461 7241

Miriam Adair- Tel: 021 461 7235

Ross O’Donovan – Tel: 021 461 7230 

Shauna O’Connor – Tel: 021 461 7237

Tim Quigley – Tel: 021 461 7209

Vicki McGrath – Tel: 021 461 7207

Tel: 021 461 7200