Keofitt W9, User Manual, Page: 26 / 50

KEOFITT W9 USER MANUAL V.4 PAGE 26
6. TECHNICAL DATA
6.1 Material
Valve body: AISI 316L (1.4404 or 1.4435 depending on version. Please refer to corresponding
datasheet)
Valve head: AISI 316L (1.4404)
Membrane: Silicone (grey)
EPDM (black)
PTFE (white)
FFKM (white)
6.2 Certificate
Valve body: 3.1
*
)
*
A 6-digit code is marked on the valve body. This code refers to a 3.1 certificate
which accompanies every consignment of valve bodies. The 3.1 certificate
is available at the Keofitt Online Service Center on www.keofitt.dk. Click
Certificates and then 3.1.
Membrane: Silicone acc. to FDA, 3A, EC1935, USP88 Class VI, BfR XV, EC2023
EPDM acc. to FDA, 3A, EC1935, USP88 Class VI, EC2023
PTFE acc. to FDA, EU10, EC1935, USP88 Class VI, EC2023
FFKM acc. to FDA, USP Class IV, EC1935, EC2023
6.3 Pressure (max.)
Working pressure: 6 bar(g) / 87 psi(g) (valve head type B 12 bar(g) / 174 psi(g))
Rubber plug 3 bar(g) / 44 psi(g)
Steel plug 12 bar(g) / 174 psi(g)
6.4 Temperature
Steam: Sterilisation using dry, saturated steam at 121 C / 250 F and 1 bar(g). Dry,
saturated steam at temperatures up to 134 C /272 F and 2 bar(g) is possible, but
might reduce the service life of the membrane.
Process medium: The acceptable operating temperature range for the process medium depends
on the choice of membrane as follows:
• Silicone: 0 C to 130°C (32-265°F)
• EPDM: 0 C to 130°C (32-265°F)
• PTFE: 0 C to 150°C (32-300°F)
• FFKM: 0 C to 250°C (32-482°F)
Sub-zero Centigrade operation is possible with all membranes. Please consult your local
distributor og KEOFITT if occation arises.
Ambient: The range of acceptable ambient temperatures is limited by the polymer
handle and the pneumatic cylinder to -40 C to 80 C.