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= |
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 |
|
= |
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 |
|
= |
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 |
