Pressure Seal Gate Valve
Pressure Seal Gate Valve
Pressure self-sealing gate valves utilize the pressure inside the pipeline to enhance the sealing effect and are suitable for high-pressure working conditions. The higher the pressure inside the valve body, the tighter the sealing, without bolts, effectively preventing high pressure leakage.
Technical Specifications
Materials:
Body:
Cast Steel：
ASTM A216 WCB, WCC | ASTM A352 Gr. LC3, LCB | ASTM A217 gr.B, C5, C12, WC6, WC9, WC12;
Stainless Steel:
ASTM A351 CF8, CF3, CF8M, CF3M, CK20, CG8M, A351 CK3MCuN etc;
Duplex:
A890 Gr.4A, Gr. 6A （SAF2205, 2507 etc）;
Nickel Alloy:
Monel 400 | Inconel 600, 625 | Hastelloy C27, C22, B2 | Incoloy 800/800HT, 825 etc.
Ball:
ASTM A105 w/ENP | ASTM A350 Gr. LF2 w/ENP | ASTM A182 Gr. F316 | ASTM A182 Gr. F316 w/ENP
Stainless Steel | Duplex SS | Nickel Alloy etc.
Seat:
RPTFE | Nylon | Davilon | PEEK | Tek-Fil® | TFM
Stem:
ASTM A479 Type 410 | 17-4PH | XM-19 | ASTM A182 F316 | Stainless Steel | Duplex SS | Nickel Alloy etc.
Caliber Range
1/2“ to 24” | DN15 to 600
Pressure Range
Class150 to 2500 | PN10~420
Operating Temperature
-110℃ to 560℃ | -166℉ to 1040℉
Operation
Handwheel | Gear | Denso | Pneumatic
Connection
RF | RTJ | BW
Design Standard
API 600 | ASME B16.34 | GB/T 12234 | JB/T3595
Features And Benefits
Pressure self-sealing gate valve is designed according to API600 and ASME B16.34 for high temperature and high pressure working conditions. Compared with bolted bonnet gate valve, the advantage of pressure self-sealing is that under high pressure, the bonnet sealing ring will be pushed by its own pressure to realize better sealing, because this design is more suitable for high temperature and high pressure working conditions.
Pressure self-sealing gate valve, not only has its own stable sealing performance, but also, the sealing surface of the iron and cobalt-based or tungsten carbide butt welding, can be used in more severe working conditions.
Self-sealing Bonnet
The self-sealing bonnet design provides excellent leak-proof performance and ensures long-term sealing stability.
Wedge Seal
The wedge seal design can effectively cope with the pressure change caused by temperature rise and improve the sealing effect.
Flexible Gate
Equipped with resilient gate plate to enhance the adaptability of sealing, applicable to a variety of working conditions.
Carbide Sealing Surface
The use of carbide sealing surface, wear-resistant, corrosion-resistant, prolonging the service life of the valve.
Gate Guiding Design
The gate is equipped with guiding design to ensure stable switching and smooth operation.
Fully Sealed Bonnet
The valve cover is fully sealed and leak-proof, further improving sealing performance and reducing the risk of leakage.
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