EPDM Type 22 Diaphragm for NovAseptic Valve
NovAseptic valves are aseptic by design: no dead zone, drainable, designed on the basis of more than 35 years of experience for GMP-compliant aseptic processes. The range is modular, from 1/2″ to 3″: for the same diameter, all diaphragms, actuators and accessories are interchangeable.
EPDM diaphragm for NovAseptic valves, FDA and USP Class VI, 1/2″ to 3″
EPDM type 22 diaphragm for NovAseptic valves, in contact with the product. FDA and USP Class VI compliant. Service range -34 °C to +149 °C. Fits all NovAseptic valve bodies of the same diameter, from 1/2″ to 3″, tank bottom and process alike.
Where this diaphragm is the right choice
EPDM is the default diaphragm for aqueous circuits: water, low-pressure steam, clean-in-place solutions. It offers the best value for performance in aqueous pharmaceutical processes, being flexible and tolerant of tightening.
EPDM withstands neither oils, fats nor non-polar solvents, in which it swells and loses its seal. Above 149 °C or in the presence of fats, the FKM or PTFE diaphragm is required.
The diaphragm: the product-contact component
In a diaphragm valve, the diaphragm is the only component in contact with the product. It provides the seal and separates the fluid from the actuator. Its selection determines chemical compatibility, allowable temperature and valve service life.
The diaphragm is the consumable part of the valve: it is replaced periodically, without removing the body. Its material is chosen based on the fluid and temperature, independently of the body and actuator.
Characteristics
| Characteristic | Value |
| Material | EPDM |
| Type | 22 |
| Service temperature | -34 °C to +149 °C |
| Compliance | FDA and USP Class VI |
| Dimensions | 1/2″ to 3″, all NovAseptic bodies |
| Interface required | No |
| Function | Product-contact sealing |
Compatible valve bodies
This diaphragm fits all NovAseptic bodies of the same diameter, tank bottom and process.
| Body | Type | Category |
| Tank bottom, 1 outlet | 44 | Tank bottom |
| Tank bottom, 2 outlets | 45 | Tank bottom |
| Tank bottom with CIP | 46 | Tank bottom |
| Sampling point | 48 | Tank bottom |
| SIP sampling point | 5 | Tank bottom |
| 2-way L | 31 | Process |
| 2-way in-line | 311 | Process |
| 3-way T | 32 | Process |
| Clamp 2.5″ or 3″ | 37 | Process |
| Clamp 1.5″ | 47 | Process |
| 3-way diverter | 39 | Process |
Frequently asked questions
Which diaphragm for my process?
EPDM for aqueous media, water and low-pressure steam. FKM for oils, solvents and high temperature. PTFE for maximum chemical inertness. Silicone for flexibility and food applications. The choice depends on the fluid and operating temperature.
Can the diaphragm be changed without removing the valve?
Yes. The diaphragm is the consumable part of the valve; it is replaced without removing the welded body, which is a key point of NovAseptic maintenance, particularly on hard-to-reach tank bottoms.
Which bodies does it fit?
All NovAseptic bodies of the same diameter, tank bottom and process alike. The modularity of the range guarantees interchangeability at equal diameter.