The externally piloted diaphragm valve consistsof a pneumatically operated piston actuator, a diaphragm and a 2-way valve housing made of forged stainless steel. The high-quality actuatorwith a stainless steel cover is designed for usagein hygienic or aggressive environments. The fl ow optimised and zero dead volume valvebody makes high fl ow rates possible and a varietyof applications to be realised.The design enables the easy integration of automationmodules whether they are electrical/optical position feedback, pneumatic control units, an integrated fi eldbus interface or even an explosion proof feedback.The fully integrated system has a compact and smooth design, integrated pneumatic lines, IP65/67/NEMA4X protection class and superior chemical resistance. Body material Forged stainless steel 316L / 1.4435/BN2

Fe < 0.5% / C ≤ 0.03% Actuator material Actuator

Stainless steel 1.4561 (316Ti)

Diaphragm materials EPDM, PTFE / EPDM (FKM on request)

Media Neutral gases and liquids, high purity, sterile, aggressive or abrasive fl uids

Viscosity up to viscous

Surface fi nishes

internal mechanical polished

internal electro polished

internal mirror fi nished

(average surface fi nish)

Ra ≤ 0.5 μm

Ra ≤ 0.4 μm

Ra ≤ 0.25 μm (on request)

Media temperatures

EPDM

PTFE/EPDM

-10 to +130 oC (briefl y up to +150°C for steam sterilisation)

-10 to +130°C

Ambient temperature +5 to +60 oC

Control medium Neutral gases, air

Max. pilot pressure max. 10 bar

Port connections

Welded acc.

Clamp acc.

Sterile threaded ports

EN ISO 1127/ISO 4200, DIN 11850 Series 2,

ASME BPE, BS4825, SMS 3008 (on request)

DIN 32676, ASME BPE, ISO 2852 (on request)