Habonim Catalog Interactive 2024 V04 15022024 - Catalog - Page 40
CRYOGENIC VALVES
One-Way Assembly
An integral rib is machined at one of the stem flats to match a groove in the ball that faces
the relief hole. A "T" mark on the stem tip shows the relief hole direction. These two features
ensure a one-way assembly for safe operation and maintenance.
Cavity Pressure Relief
Each cryogenic valve is equipped with a mechanism that prevents pressure buildup in the
valve cavity, eliminating the risk that liquefied-gas evaporation will over - pressure the valve
body by releasing over-pressured media from the cavity area back to the line.
Habonim uses a variety of such mechanisms:
• Relief hole on the upstream sphere of the ball to prevent pressure buildup in the cavity
• Patented spring loaded seat construction with piston effect for cavity pressure relief
• Single seat active seal construction - no closed cavity
• Pressure Relief Valve, patent pending solution
Ball with an Integral Pressure Relief Valve*
* Designed according to EN ISO 4126-1 “Safety devices for protection against excessive pressure"
PRV embedded into the ball.
Providing sealing in both
directions up to the valve's
rated pressure.
"T" mark on stem showing
the relief hole direction
Spring and Nut, allows
precise set-point
adjustment of the
relief device.
Shutoff 1
Relief direction
Tag
Sealing direction tag
indicates bidirectional
work and predefined
pressure relief side.
40
Trapped fluid
pressure released
to the upstream
direction.
CRYOGENIC VALVES
Shutoff 2
Direction of
pressure relief
