Aseptic Diaphragm Valves, Weir Type – Manual & Pneumatically Operated

BioClean weir type diaphragm valves are particularly suitable for use in ultra-hygienic and aseptic applications. The valves, in their various configurations, are commonly used for shut-off, flow regulating and sampling duties. The diaphragm valve has a flexible diaphragm which is sandwiched between the body and the bonnet and acts as both the body seal and the seat seal. This design makes it ideally suited to aseptic applications as neither the product, nor any wetted part, comes into contact with the external environment. Maintenance requirements are minimal, and the top entry design means that there is no need to remove the valve from the pipework for service. When correctly installed weir type diaphragm valves are fully self-draining.


  • Standard size range ¼” to 3” (4” variant also available)
  • 3A Certified
  • ASME BPE Certified manufacturer
  • Suitable for SIP and CIP
  • Available with SF1 (Ra ≤5µm) or SF4 (Ra ≤ 0.375µm) internal surface finish options
  • Body material AISI 316L stainless steel as standard. Forged body or lower cost cast body options available. Block body option available for T-body, tandem and multi-port valves
  • Stainless steel bonnet standard for manual valves
  • PP and stainless steel actuator options available
  • EPDM, TFM + EPDM and silicone diaphragm materials available – FDA and USP Class VI compliant
  • Available in 2-way, T-body, SAP/GMP, tank bottom, and multi-port executions
  • Modular interchangeability between the various body types and activation options
  • Control head available with position feedback switches and optional solenoid valve
  • Permanent marking, material and surface finish test certificates available for full traceability
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