德国BURKERT膜片阀2032系列采用无缝焊接

Orifice

DN 4-100

Body materials

• Stainless steel 1.4435 / 316 L

• Stainless steel 1.4435BN2 / ASME BPE

Fe < 0.5% / C ≤ 0.03%

Diaphragm materials

EPDM (AB), PTFE/EPDM (EA)

EPDM (AD), advanced PTFE/EPDM (EU) and FKM (FF)

on request

Actuator materials

PPS, PA

Pilot air ports

Stainless steel 1.4305

Surface finish (others on request)

Ra ≤ 0,5 μm (ASME BPE SF1)

• inside mechanical polished

(external Ra ≤ 1.6 μm)

• inside electro polished

Ra ≤ 0,38 μm (ASME BPE SF4 / DIN HE4)

(external Ra ≤ 1.6 μm)

Medium temperatures

EPDM (AB), PTFE/EPDM (EA)

-10 to +130 °C (steam sterilisation +140 °C for 60 min)

EPDM (AD), advanced PTFE/

-5 to +143 °C (steam sterilisation +150 °C for 60 min)

EPDM (EU)

FKM (FF)

0 to +130 °C (not recommended for steam)

Ambient temperature

+5 to +140 °C

Actuator size < 100 mm

Actuator size 100-125 mm

+5 to +90 °C (briefl y up to +140 °C)

Actuator size ≥ 175 mm

-10 to +50 °C

Control medium

Neutral gases; air

Pilot pressure max.

max. 7 bar, see table on p. 2