1. Simple structure, high reliability: the valve disc is the only moving part, compact structure.
2. Fast closing ability: the disc stroke is short, and the closing action can be completed in a short time, effectively reducing the phenomenon of water hammer.
3. Wide range of application: suitable for a variety of media, including water, steam, gas, etc., especially in small and medium diameter pipelines.
4. Good sealing performance: metal to metal sealing pair, reliable sealing.
Material:Carbon Steel, Stainless Steel, Alloy Steel
Nominal Size: NPS 2"~48",DN50~1200
Pressure Rate: Class 150-2500, PN 10~420
Temperature Range:-60℃~+538℃
Features Description: Bolted cover, lift disc, hardface face metal seat.
Application range: Suitable for pipelines in various working conditions such as petroleum, chemical, pharmaceutical, fertilizer, power industry, and
low temperature.
◎ Design Standard: API 6D, ASME B16.34,GB/T 12236
◎ Pressure Temperature Rate: ASME B16.34,GB/T12224
◎ Face to Face: ASME B16.10,GB/T 12221,EN558
◎ Flange Standard: ASME B16.5, ASME B16.47, GB/T9113,JB/T 79,HG/T 20592, EN 1092, GOST 33259
◎ Butt Weld: ASME B16,25,GB/T 12224
◎ Pressure Test: API 598,API6D,GB/T 13927,JB/T 9092, GOST 9544
The dual plate check valve features two semicircular, spring-loaded valve discs mounted on a central vertical pivot. When the valve opens, the force of the fluid and the spring act at the center of the disc, causing it to open from the base first. This design minimizes wear on the seal during opening, enhancing its durability. As the flow decreases, the discs slowly move back towards the seat due to the spring's force, ensuring a gradual closure. During backflow, the increased force on the discs leads to a faster closure, effectively reducing the risk of water hammer and hydraulic shocks. The spring’s force closes the top end of the disc first, preventing damage at the disc's base and prolonging the seal's lifespan.
The CN700 Low-Noise Control Valve is divided into the CN702 and CDN702 series, mainly designed to reduce the noise of compressible fluids. To adapt to the throttling, diffusion and expansion of gases, the valve core adopts a pressure-balanced structure, and the sleeve is equipped with many symmetrical small holes to reduce pressure drop. The fluid passage is in an S-shaped streamline, and a deflector wing is also provided to improve the smooth flow of the fluid around the sleeve. Therefore, the control valve has low pressure drop loss, large flow rate, low noise and less cavitation corrosion. The control valve is equipped with the RSMF series multi-spring pneumatic diaphragm actuator, which has a simple and compact structure, stronger stability, large output force and long service life.
The self-regulating control valve is an energy-saving control device that does not require external driving energy. It relies on the pressure or temperature of the medium being regulated as its power source, automatically adjusting according to set values based on changes in the medium. This valve integrates multiple functions of detection and control into one unit, forming an independent instrument control system. The self-operated control valve adopts a standard modular design. Our products are characterized by: standardization, serialization, and generalization. This achieves a high level of these three aspects.