Diaphragm Valves

Product code: Diaphragm valves

Aseptic Diaphragm valves

SED Flow control Hygienic Diaphragm valves are designed to suit aseptic processes in Biotech and Pharmaceutical industry. We offer Manual and pneumatically operated diaphragm valves manufactured with an intelligent design to ensure high quality and long lifetime.

Flexachem Manufacturing Ltd offer SED Flow Control Gmbh valves. All are manufactured in Germany to the highest ASME BPE Standards. 

The range of SED diaphragm valves supplied by Flexachem are:

  • handwheel or a pneumatic actuator.
  • Aseptic, sterile valves
  • Valve body is 1.4435/316L Investment cast or Forged
  • Clamp ends or butt weld ends
  • Fast delivery

SED Valves have an intelligent design that ensures higher quality over competitors:

  • Hygienic, sterile Stainless steel valves.
  • CDSA Diaphragm exclusive to SED (Better Sealing, reduces entrapment)
  • High lifetime of Diaphragm and valve
  • Low weight
  • Compact actuators available
  • Optional Locking device (U-Lock)
  • Plastic or Stainless steel actuators
  • Multi-port valves available (contact us for more info)

What is a Diaphragm valve?

A Diaphragm valve is a flexible, pressure responsive element that transmits force to throttle, open or close a valve. Diaphragm valves separate the flow stream from the closure element using an elastomeric diaphragm, which is a flexible, durable material.

The diaphragm in a valve serves as a seal to prevent the liquid encountering other operating parts of the valve, avoiding contamination, corrosion and wear. The diaphragm valve is well suited for the control of the flow of corrosive materials and avoiding contamination of product within many processes around “clean utilities”, WFI (water-for-injection), and many purified water applications in Pharma & Biotech industry.

The video below shows how the SED KMA 905 handwheel operated Diaphragm valve is operated.


Video credit: SED Flow Control- You tube


SED Flow Control Diaphragm Valves SED flow control


SED Flow Control GmbH manufacture a wide range of reliable high quality, Aseptic diaphragm valves tailored to suit the biotech and

pharmaceutical industry and wherever clean and purified water is a necessity.

Valve model types are generally Steripur, KMA and KMD, along with associated controls. These are manual/ hand operated valves or pneumatic actuator operated valves. Specifications are to ASME BPE standards.

The SED Diaphragm valves are Manual/hand operated  or Pneumatic operated valves. Their Diaphragm valves have an innovative design which are user friendly.

These Diaphragm valves are made up of high quality stainless steel with a polished surface of 0.25 to 0.8 µm and can be used in many sterile processes.

Biotech and Pharma team: 

Brendan Merrigan (External) –

Mob: 087 2598124 

Shauna O’Connor (internal)-

Tel: 021-4617237

Email: shauna.oconnor@flexachem.com