 |
 |
 |
 |
 |
 |
|
|
|
|
| CAST STEEL, WAFER TYPE/FLANGED ENDS |
| |  | | |
| Features |
- Also available in full bore construction in single body with ASME B 16.10/API 6D face to face dimensions
- Larger sizes and higher class valves are provided with gear arrangement
- Hawa valves non slam check valves conform to API 6D-ISO 14313/API 594/API 6A
- Body styles
- Flanged connections to ASME B 16.5 RF/RTJ, API 605, API 6A, MSS SP 44, ASME B16.47
- Flangeless (Wafer Style)
- Lug (Drilled or Threaded)
- Buttweld
- Hub ends (for clamp joints)
- Short and long patterns
- Pressure ratings to ASME B 16.34 class 150(PN 20) through 2500(PN 420) and API 6A pressure class 2000PSI through 10000PSI and class 125(for cast iron valves)
- Metal to metal seating
- Disc is the only moving part, minimizing wear
- Disc and seating configuration give streamlined flow path with venturi effect, resulting in low pressure drop
- Inlet flow velocity moves disc axially with short stroke. In response to flow velocity reduction, a compressed spring initiates valve closure and provides quick response
- In critical service applications such as fast reversing systems where backflow is a concern the Non slam check valves offer the following benefits
- Minimizes the damaging effect of hammer in fluid systems
- Removal of chatter associated with conventional valves in reciprocating compressor service
- Protects rotating equipments from damage due to flow reversal
- Minimizes pressure loss in piping systems
- Provides quick dynamic response reducing reverse velocity
- No fugitive emissions
|
|
|
|