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BS 5156DIN 3202MSS-SP-88EN 558-1
Sizes 15mm–500mm (½"–20"), PN 6–16. Weir type & straight-through type. Glandless design, online maintenance, field-replaceable diaphragm.
| Size Range | 15mm–500mm |
| Pressure Rating | PN 6–16 |
| Ends | Flanged; screwed and weld-end versions also available |
| Design Standard | BS EN 13397 |
| Testing | EN 12266-1 |
| Face to Face | DIN EN 558-1 Series 1 and Series 7, depending on configuration |
| Operation | Handwheel, gear box, pneumatic or electric actuator |
| Production Capacity | 48,000 units/year |
| Category | Diaphragm |
Key Features
Engineered for Performance
- Weir type S2K and straight-through G2K designs
- Glandless, cavity-free construction
- 100% tight shutoff
- Rubber-lined body for corrosion and abrasion resistance
- Low pressure drop and high flow coefficient
- Field-replaceable diaphragm and bonnet
- Sealed bonnet with travel stop
- Bi-directional service
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
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Our engineering team works with you to specify, design, and deliver the exact valve solution your application demands.