Single seat regulating valve of Azbil VST/HPS top – oriented single – seat regulator for heavy load. The Single seat regulating valve of Azbil VST/HPS body has a compact structure, S-shaped fluid channel, small pressure loss, strong flow capacity, wide adjustable range, high accuracy of flow characteristics.
The top guide area is large, strong vibration resistance. The turn-off performance meets IEC or JIS standards. Actuator using simple, miniaturized multi – spring film type, compact structure, large output force.
Model Single seat regulating valve of Azbil VST/HPS small shape high performance top oriented regulating valve is widely used in high temperature, low temperature, high pressure fluid pipeline, can achieve reliable control, with high turn-off performance.
The regulating valve meets the functional safety standard (IEC61508).
A wide range of available materials
Products can be provided to meet a variety of body material specifications, such as: carbon steel, which is generally used with water, steam, and fuel oil; highly corrosion resistant stainless steel, which is essential for controlling corrosive fluids; and resin.
Severe service applications
Cage-type single-seat valves with excellent anti-cavitation performance are available for severe service in high temperature and high differential pressure.
Control of highly viscous fluids, slurry, and coagulable fluids
Control of various fluids is enabled by hardening of the valve interior, self-washing structure (optional), and steam jacketing (optional) to prevent coagulation by keeping the valve body hot.
Excellent seat leakage performance
Metal seat tight shutoff (class V) and soft seat tight shutoff (class VI) are available.
Excellent external leakage prevention performance
A bellows seal can be added to valve stems. Increasingly sought-after specifications for gland packings can be applied to comply with fugitive emissions regulations for volatile organic compounds.
High control performance is achieved by a combination of wide rangeability and a smart valve positioner.
|Size||5″, 10″, 12″,1″ to 3″|
|Pressure rating||ANSI/JPI 150 to 600
JIS10K to 30K
|ANSI/JPI 900 to 2500
|End connection||Flanged : RF, FF, RJ
Welded : SW, BW
|Body material||Carbon steel
316SS, 316SS with CoCr-A
316LSS, 316LSS with CoCr-A
|Temperature range||-101 to 520°C,-5 to 566°C|
|Leakage performance||Class IV, IV-S1, V, VI|
Application of Single seat regulating valve of Azbil VST/HPS
flushing service for petrochemical
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