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Keofitt® Sampling Bags Select your Keofitt valve Keofitt® Classic M4™ Sampling Valve Keofitt® Classic W9™ Sampling Valve Keofitt® Classic Type I “INGOLD” Sampling Valves Keofitt® Classic W15™ Sampling Valves Keofitt® Classic W25™ Sampling Valves Keofitt® Simplex™ Sampling Valve Keofitt® Sesame™ Dual-Seat Sampling Valve Keofitt® Bottle Sampling Systems Keofitt® Micro Port


W9™ sampling valve

The W9™ is the standard Keofitt® sampling valve, the valve others are measured to. Designed for sampling medium viscosity products, with particles up to 3 mm in diameter, if fitted with PTFE membrane and 2mm when fitted with silicone or EPDM membrane. W9™ valves are mostly used for products that have about 0-1,000cP in viscosity.

Sampling Sterilization

Keofitt valve - sampling

Keofitt valve - sterilizing

The W9 valve is used in a range of applications such as breweries, dairies, pharmaceutical and biotechnological industries, with wide range of products such as:


The W9 valves come with a variety of valve bodies and heads that fit most situation. The bodies come with welded or clamp connection, the heads come with diffrent operations and membranes.

Technical Data

Temperature range: Rubber membrane: 0 to 130ºC / 32 to 266ºF
PTFE membrane: 0 to 150ºC / 32 to 302ºF
Process line pressure 
(inside tank or pipe):
Valve head type H, Q, K and N: 0 to 6 bar(g) / 0 to 87 psi
Valve head type B: 0 to 12 bar(g) / 0 to 174 psi (g)
Material:  Steel parts: 316L*
Membranes: PTFE, Silicon and EPDM
FDA approved
Dimensions: Process dimension In-/outlet dimension
Body surface:  Inner surface Ra < 0,5 μm/20 μinch Electropolished in- and outside
Material certificate: 3.1
*Other materials available on request