Rising Stem Ball Valve
- Low maintenance valve due to the non-contact between ball and seat during the stroking action
- Tight sealing in both direction
- Extended Temperature range (from -46°C to 450°C)
ATV offers a full range of Rising Stem Ball Valves mainly suitable for gas processing, such as for high temperature and cycling service, on molecular sieves and dehydrating units in gas treatment, isomerization units and other processing plants.
Rising Stem Ball Valves are the most suitable for these severe service applications requiring the highest reliability because the sealing surfaces do not contact during stroking with the benefit of long life without maintenance. Peculiarity of ATV Rising Stem Ball Valve is that when the ball is in close position, the tight sealing between the ball and the single fixed seat is granted in both directions. Rising Stem Ball Valves can be operated with manual gear or with electric, pneumatic or hydraulic actuators.
Materials are sourced from qualified suppliers on the base of specifications that reflect the industry standards (ASTM, NORSOK, BS, DIN or others), but do also incorporate additional requisitions resulting from long experience.
ATV designs, manufactures and tests its products in accordance with all the relevant Industry standards and codes (API, ANSI, ASME, BS, ISO, NACE, PED and others). ATV rising stem ball valves are pressure tested to API 6D requirements.
ATV stresses its willingness to produce engineered valves; therefore, it welcomes requests for special size, class and design requirements.
Rising Stem Ball Valve - Specifications
|APPLICATIONS||Gas processing, isomerization units and other processing plants|
|APPLICABLE STANDARDS||API 6D, API 6FA, ASME VIII Division 1 and 2, ASME B16.34, ASME B16.10, ASME B16.5, NACE MR0175|
|RANGES||2” ÷ 24” Class ANSI 600, 2” ÷ 20” Class ANSI 900, 2” ÷ 12” Class ANSI 1500 and 2500. Larger sizes available on request.|
|Cast Body Construction|
|Top Entry with Bolted Bonnet|
|Full Bore or Reduced Bore|
|Wear Resisting Hardfacing on Sealing Surfaces|
|Bi-Directional Tight Sealing|
|Flanges (to ASME B16.5 up to 24” and B16.47A for 26” and larger)|
|Compact flanges (to Norsok L005)|
|Hub ends for clamped connections (as per customer requirement)|
|Low alloy carbon steel|
|Duplex or Superduplex stainless steel|
|Handwheel or manual gear|
|Forged body construction|
|Hydraulic snubber for pneumatic actuator|
|Injectable packing for in-line maintenance service|