Burkert Type 2700 - Manual (Page 8)

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ECHNICAL
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Liquid and gaseous media that do not attack the housing and seal materials.
Control medium: instrument air, class 3 according to DIN ISO 8573-1
Media
NOTE The approved operating pressures and media temperatures are to be taken from the data sheet or rating
plate. With regard to the permissible seat leakage, the values given in DIN EN 1349 are complied with,
whereby for the steel/steel seal, leakage class IV and for the PTFE/steel leakage class VI apply.
Construction of the control valve
2/2-way piston controlled valve with control cone and Y-housing
Control function A
(closed by spring force in rest position)
Control function B
(open in rest position)
Drive unit material: PA (polyamide)
Housing material: stainless steel 316L
Seal materials: steel/steel (1.4571) or PTFE/steel