API 602 Check Valve Manufacturer in China: API 602 Check Valve, Forged Steel, 1/4-4 Inch, Class 150-2500 LB, BB, WB, PSB, ASME B16.34, BS 5352.
Construction Features:
Forged Steel, Piston, Ball or Swing type.
Integral Body Seat for Piston and Ball Check valves.
Separated Seat Ring design for swing check valves.
Spiral Wound Gasket or Oval Ring Joint gasket.
Reduced Bore or Full Port.
T-Pattern or Y-Pattern.
Socket Welded, Threaded, Butt Welded, Flanged End.
https://www.uvalve.cn/api-602-check-valve.html

Main advantages of the product:
1.Bellows sealed gate valve, the key component of which is metal bellows, adopts automatic roll welding at its lower end and valve stem assembly, and automatic roll welding at its upper end and connecting plate, forming a metal barrier between fluid medium and atmosphere to ensure zero leakage of valve stem.
2.The valve has double sealing design (both bellows and packing). If bellows fails, valve stem packing will also avoid leakage and conform to international sealing standards.
3.The bonnet is provided with a greasing joint, which can directly lubricate the valve stem, nut and shaft sleeve, unlike the traditional method of only adding oil to threads.
4.Ergonomically designed handwheel has longer service life, easy and convenient operation, and is safer and more reliable.
https://www.uvalve.cn/ansi-bel....lows-seal-gate-valve

Pressure Seal Gate Valve Supplier in China: Pressure Seal Gate Valve, 2-40 Inch, DN50-DN1000, CLASS 150-2500 LB, PN10-PN420, API 600, API 6D, API 603.
Pressures seal Petroleum Gate Valve, API GATE VALVE.
Normal Size Range: DN50-DN1000, 2 Inch-40 Inch.
Normal Pressure Rating: PN10-PN420, CLASS 150-2500 LB.
Material: ASTM A216 WCB, ASTM A217 WC6, ASTM A351 CF8, ASTM A351 CF8M, ASTM A351 CF3, ASTM A351 CF3M, ASTM A351 CN7M.
Design and Manufacture: Cast Carbon Steel gate valve: API 600 (ISO 10434) or API 6D. Cast Stainless Steel gate valve: API 600 (ISO 10434) or API 603.
Inspection and Test: API 598, API 600 or API 6D.
End Flange Dimension: ASME B16.5 ( NPS<=24 Inch).
ASME B16.47 Series B, API 605.
ASME B16.47 Series A, MSS SP-44 (NPS>24 Inch).
https://www.uvalve.cn/pressure....-seal-gate-valve.htm

DIN Sleeved Plug Valve Maker in China: DIN Sleeved Plug Valve, API 599, API 6D, PN16-PN160, DIN 3202 F1, DIN 2543-2549, DIN 3230.
The use of the German standard card sleeve plug valve.
1. Reasonable product structure, reliable sealing, excellent performance and beautiful appearance.
2. Its sealing is achieved by sealing the cover around the cover. Unique 360°metal lip protection fixed card sets.
3. The valve has no cavity to accumulate in the medium.
4. The metal lip provides a self-cleaning function when spinning, which is suitable for viscous and easily fouling conditions.
5. Two-way flow, easy to install.
6. The material and flange dimensions of the parts can be selected according to the actual working conditions or users' requirements, and meet all kinds of engineering needs.
https://www.uvalve.cn/din-sleeved-plug-valve.html

Pressure Balance Lubricated Plug Valve Fabricator in China: Inverted Pressure Balance Lubricated Plug Valve, 1/2-30 Inch, Class 150-2500 LB, API 599, API 6D.
https://www.uvalve.cn/inverted....-pressure-balance-lu