Back to All Products
BS EN 13397
Sizes 15mm–350mm. Weir & straight-through type with rubber/PTFE diaphragms.
| Size Range | 15mm–350mm |
| Pressure Rating | PN 6–16 |
| Design Standard | BS EN 13397 |
| Testing | EN 12266-1 |
| Operation | Handwheel, gear, pneumatic or electric actuator |
| Flow | Bi-directional through each selected path |
| Category | Diaphragm |
Key Features
Engineered for Performance
- Weir and straight-through options
- Rubber or PTFE diaphragm
- Three-way flow routing
- Glandless isolation of the operating mechanism
- Field-replaceable diaphragm
- Manual or automated operation
Need custom specifications? Our engineering team can help you find the right solution.
Material Options
Typical Materials of Construction
| Body, bonnet & compressor | Cast iron, SG iron, ASTM A743 CC50, ASTM A216 WCB, ASTM A351 CF8, CF8M or CN7M |
| Body lining | Ebonite, Natural Rubber, Butyl, Neoprene, EPDM or Nitrile |
| Diaphragm | Natural Rubber, Butyl, Neoprene, EPDM, Nitrile, Hypalon, Viton, Silicone or PTFE |
| Stem & bolting | ASTM A276 Type 410 stem with B7 / 2H connecting studs and nuts |
Final material selection depends on pressure, temperature, media and service conditions.
Applications
Common Service Areas
- Minerals and mining slurries
- Phosphoric acid and phosphate slurry
- Rayon and chlorine bleaching plants
- Water and waste-water treatment
- Effluent treatment plants
- Sugar, steel and fertiliser industries
- Power plants
Related Products
More in Diaphragm
PFA Lined Diaphragm Valves
BS EN 13397EN 12266-1EN 558-1
PFA or PP-lined diaphragm valves for highly corrosive fluids, acids, alkalis, chlorides and semiconductor process service. PTFE diaphragm with elastomer backup pad.
View DetailsDiaphragm Valves
BS 5156DIN 3202MSS-SP-88
Sizes 15mm–500mm (½"–20"), PN 6–16. Weir type & straight-through type. Glandless design, online maintenance, field-replaceable diaphragm.
View DetailsYour Flow Challenge Deserves More Than a Catalogue.
Our engineering team works with you to specify, design, and deliver the exact valve solution your application demands.