AXIAL CHECK VALVES (ACV)
Control Seal Axial non slam Check valves (ACV) deliver an - effective dynamic response under various flow deceleration conditions.
SIZE: 1” ~ 48” (DN25 ~ DN1200)
BORE: Reduced or Full (not piggable)
PRESSURE: 150# ~ 2500# (PN20 ~ PN420)
TEMPERATURE RANGE: -129°C ~ 550°C
CONNECTIONS: Wide choice on request (available in FL, BW, HUB)
MATERIALS: Wide choice on request (available in NACEMR0103 and NACEMR0175)
Axial Check Valves introduce advanced design compared to conventional check valve types - Swing Check and Dual Check valves.
Characteristics / Features:
LOW INERTIA
MINIMAL TRAVEL
MECHANICAL ASSISTANCE
TIGHT SHUT OFF
LOW CRACKING PRESSURE
EASY OPENING AND STABLE OPERATION
NON-SLAM OPERATION
Benefits:
SUPERIOR PERFORMANCE
FAST RESPONSE
LOW PRESSURE LOSS
MAINTENANCE FREE
AVOIDING WATER HAMMER
APPLICATIONS:
Gas Transmission / Water Transmission
Compressor station
Non-return pump and flow-line
LNG compressor train APS (Anti pressure surge device)
LNG cryogenic cooling system
Multiphase critical pumping
Power Generation
Feed water
Cooling water
Blowdown
Hydrocarbon processing
Control Seal has a UNIQUE DESIGN OF ITS PRODUCTS, SHORT LEAD TIME, COMPETITIVE PRICING AND EXCELLENT AFTER-SALES SUPPORT.
Control Seal Axial Check Valves have optimized disc design, ultra low pressure drop, Non slam short stroke.
Selection of the MODEL is performed based on size and system conditions.
ANC I Axial non slam check valve - SINGLE SEAL DISC
Available in sizes 1'' to 10'', the Control Seal style ST-6 is a solid disc and shaft type. The axial design allows for a streamlined flow path around the Trim and diffuser providing high pressure recovery, Thereby minimizing pressure drop across the valve. A short stroke length provides the quick response required by a non-slam check valve.
ANC II Axial non slam check valve - DUAL RING SEAL DISC
The concentrically radially guided with multi-spring design, The dual seal ST-6 II type valve, supplied in sizes 12'' and above, ensures that the disc remains light and responsive even in large size. Disc mounted on a multiple helical spring in radial guide assembly, the disc moves freely with ultra-low friction bearing.
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Design |
API 6D, ASME B16.34 |
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Face to Face dimensions |
API 6D, ASME B16.10, Mfg.std. |
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Flanges |
ASME B16.5, B16.47, GOST |
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Fire Safe |
ISO 10497, API 6FA, BS 6755 |
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Fugitive Emission |
ISO 15848, TÜV |
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Testing |
API 598, API6D, ISO 5208 |
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Marking |
CE, MSS-SP-25, PED |
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1.Open position Reduced pressure, generated by increased velocity in the minimal flow area, results in additional force to assist the disc to open and allows for extra spring loading that facilitates a faster closing time. This spring force is balanced in the fully open position. |
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2. Closed position When a noticeable reduction in flow occurs, the disc reacts immediately, limiting backflow and valve slamming. The spring load, low mass disc, and short displacement ensures a rapid self-dampening response. For certain applications, the internal geometry can be modified to suit the service conditions. |
