Butterfly Valves for Pharmaceutical

EHEDG (European Hygienic Engineering & Design Group) and 3-A are both hygiene-design standards for food, beverage, and pharmaceutical equipment, but they originate from different regions. EHEDG is the EU-recognised standard, widely accepted by European and international regulators for pharmaceutical use; it covers hygienic design criteria including drainability, surface finish, and cleanability verified by physical testing. 3-A Sanitary Standards are US-origin, primarily used in dairy and food industries in North America; increasingly accepted in pharmaceutical applications. For EU pharmaceutical facilities or GMP-regulated plants supplying EU markets: EHEDG is the primary requirement. For US FDA-regulated facilities: 3-A or ASME BPE are more commonly referenced. Vajra supplies butterfly valves certified to both EHEDG and 3-A; specify which is required on your purchase order.

Yes, with the correct liner material. EPDM-lined butterfly valves are SIP-rated to 135–145°C for standard GMP steam sterilisation cycles. PTFE-lined butterfly valves have a temperature limitation — pure PTFE becomes dimensionally unstable under cyclical thermal stress at SIP temperatures, potentially causing leak paths; however, modified PTFE (TFM PTFE) is available in SIP service. Key requirements for SIP-rated butterfly valves: liner material rated and tested above 145°C; body geometry that prevents steam condensate trapping; actuator rated for SIP temperature (many pneumatic actuators have ATEX/temperature limits — verify before specifying); positioner rated if automated SIP valve sequencing is needed. Vajra provides SIP service temperature confirmation per valve order with documentation.

GMP qualification requires a documentation package that supports DQ (Design Qualification), IQ (Installation Qualification), and OQ (Operational Qualification): (1) EN 10204 3.1 material test certificates for all wetted metal components (body, disc, stem, bolting); (2) Elastomer compliance certificates — FDA 21 CFR 177.2600 for EPDM, FDA 21 CFR 177.1550 for PTFE, USP Class VI testing certificate; (3) Surface roughness measurement report — actual Ra values on internal wetted surfaces, not just stated in the datasheet; (4) Pressure test certificate per EN 12266 or ASME BPE; (5) EHEDG or 3-A certification certificate; (6) Dimensional drawing per PED or ASME BPE; (7) Actuator EC Declaration of Conformity (CE marking). Vajra includes a standard documentation package with every pharmaceutical butterfly valve order; extended packages for IQ/OQ support are available on request.