Subsea Nozzle Check Valve
- Compact design
- High Cv
- Fast response time
ATV provides a full range of Nozzle Check valves for production, processing and transmission applications, suitable for pressure up to 2500 psi and water depths up to 10000 ft (3000 m).
Nozzle Check valves have typically a full bore design with optimized design of body cavity and disk to grant a streamlined flow with almost constant section all through the inside passage thereby granting a low pressure drop and a high-speed response time. Design is carried out using advanced parametric design tools and solid modelling programs. Valves design undergoes sophisticated structural and fluid dynamic analysis, carried out with FEA and CFA analysis: inner profiles are optimized in order to control the turbulence level and to increase device performances. Due to its internal design, the nozzle check valve is not suitable for installation in lines where the piggability is a requirement. Furthermore, since the body is monobloc, there are fewer potential leak paths than the other types of check valves.
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, DNV, BS, ISO, NACE, PED and others).
ATV stresses its willingness to produce engineered valves; therefore, it welcomes requests for special size, class and design requirements.
Subsea Nozzle Check Valve - Specifications
|APPLICATIONS||Subsea pipeline, chemical injection system|
|STANDARD||API 6D, API 6DSS,ASME VIII Division 1 and 2, ASME B16.34, ASME B16.10, ASME B16.5, NACE MR0175 and other diffused Industry standards|
|RANGE||2” ÷ 60” Class ANSI 600, 2” ÷ 48” Class ANSI 900, 2” ÷ 36” Class ANSI 1500, 2” ÷ 20” Class ANSI 2500. Larger sizes available on request.|
|WATER DEPTH||Up to 3000 m (10000 ft). Greater depth upon application.|
|One-Piece cast body construction|
|Welded-in or removable seat|
|Wear resisting hardfacing on sealing surfaces|
|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)|
|Studded end flanges|
|Low alloy steel|
|Duplex and superduplex stainless steel|
|Soft seated for tight sealing|