Operation
Butterfly valve 41000 is an on-off and control valve for demanding industrial pipelines. The valve is tight to both directions of flow.

Nominal pressure
PN 25

Closing pressure difference
CS 20 bar
TS 25 bar

Temperature and tightness class
Metal max +260 °C/ min -40 °C ISO 5208, EN 12266-1 RATE B
PTFE+C max +180 °C/ min -40 °C ISO 5208, EN 12266-1 RATE A

The max pressure difference depends on the working temperature.

Design
The body of this wafer type butterfly valve is made of stainless steel. The double eccentric disc and stem are of stainless steel as well. Stem seals are tightable graphite seals and O-rings.
The butterfly valve is delivered with bare shaft, handlever, manual gear, electric, pneumatic or hydraulic actuator according to customer’s needs.

Face to face lenghts
according to ISO 5752 SFS 4132 series 25 DIN 3202 K2

Connection: between flanges SFS 2123 = DIN 2501 PN 25, PN 16, PN 10, ANSI CLASS 150

Nominal sizes
DN 80 - 350

Product code
41000CS_ _ _ metal seated
41002TS_ _ _ teflon seated

410.. _ _ _ with handlever
410.. _ _ _Z with bare shaft
410.. _ _ _M with manual gear

Special order for steam
41001CS_ _ _ FIRE SAFE accepted

Conform with the requirements of the Council Directive 97/23/EC on Pressure Equipement, marking:
Class: Gas, group 1

41000_uk.pdf (205.8 kb)