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Information Ambient Temperature

Operating and storage temperatures of valves

Wandfluh valves can be used within the temperature ranges listed below.

Limitations

Temperature range:
Limitations, in particular for the maximum permissible temperatures, can have other reasons, independent of the sealing material (e.g., in the Ex-
protection area). Releasing of other values only after consultation.

Performance data:
During operation outside the temperature ranges indicated on the data sheets, the performance data may be limited.

Sealing material Additional designation Valve Operating temperature Storage temperature
NBR / Acrynitrile None Standard -25°C ... +70°C -40°C ... +70°C

FKM / Viton D1 Standard -20°C ... +70°C -40°C ... +70°C

Standard with increased
NBR 872 / Acrynitrile Z604 -40°C ... +70°C -40°C ... +70°C
play

Valves made of special
PU / Polyurethane Z591 materials and increased -60°C ... +70°C -60°C ... +70°C
play

Terms
Operating temperature:
The operating temperature is the ambient temperature and the temperature of the pressure medium and designates the temperature range, within
which the valve may be operated and put into operation.
Storage temperature:
A verage temperature of the ambient of the valve.
Important: This temperature indication also includes the temperature range of the installation in a non-operating condition.

Wandfluh AG Tel. +41 33 672 72 72 E-mail: sales@wandfluh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 1.0-70E 1/1
CH-3714 Frutigen Edition 14 22