●The overall structure design of the valve is compact, with small external dimensions and light weight. It is not only easy to transport and install, but also effectively saves space in the pipeline system, especially suitable for working conditions with limited installation space
●The main components such as the valve body and valve cover are forged and formed using forging technology. Compared with cast steel parts, they have better quality and performance, stronger mechanical properties such as plasticity and toughness, and can withstand greater impact forces. They can meet the requirements of various harsh working conditions and are suitable for high temperature, high pressure, and harsh working environments
●The selection of sealing surface materials is reasonable. Generally, the sealing surfaces of the valve disc and seat are made of alloy steel or hard alloy butt welding, which is heat-resistant, corrosion-resistant, wear-resistant, has a long service life, and can maintain good sealing performance for a long time
●When the medium flows downstream, the valve disc opens under the thrust of the medium; When the medium stops flowing or undergoes backflow, the valve disc automatically closes under its own gravity and the pressure of the medium backflow, thereby preventing the medium from flowing back. The action is sensitive and reliable, and the opening and closing are rapid, which can effectively protect the normal operation of the pipeline system and equipment
●Multiple connection methods can be provided, such as socket welding, threading, flanges, butt welding, etc., to meet the installation needs of different pipeline systems. At the same time, the nominal pressure range of the valve is wide, from CL150 to CL2500, and the working temperature range is wide, usually between -196 ° C and+600 ° C. It can adapt to various pressure levels and temperature conditions, and can be widely used in many industries such as petroleum, chemical, natural gas, power, metallurgy, papermaking, pharmaceuticals, etc
Main material: carbon steel, stainless steel, alloy steel
Nominal diameter: NPS1/4″~NPS3″ DN6~DN80
Pressure range: CL150~CL2500 PN10 ~ PN420
Working temperature: -196°C ~ +600°C
Operator: Manual
Application range: tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electricity, metallurgy, energy system, etc.
◎ Design Standard: API 602、BS5352
◎ Pressure Temperature Rate: ASME B16.34,GB/T12224
◎ Face to Face: ASME B16.10,GB/T12221
The length of the riveted structure at the threaded end of the socket-welding connection shall comply with the factory standards.
◎Connection standards：ASME B16.11、ASME B1.20.1、ASME B16.5、ASME B16.25
◎ Fire Safe: API6D
◎ Pressure test: API 602/API 598,BS5146
When the disc of the lift check valve slides along the vertical center line of the valve body and the medium flows forward, the disc is lifted by the fluid thrust and the medium passes smoothly; When the medium stops flowing or reverse flowing, the valve disc quickly closes under the action of its own gravity and the reverse thrust of the fluid to prevent the medium from flowing back. This valve is usually equipped with a guide sleeve to ensure that the disc remains smooth during lifting and accurately falls back onto the seat.
The C700 Series 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.
An energy-saving multi-combination control valve without external energy sources, used for flow and temperature control devices for non-corrosive liquids with a maximum temperature of 350℃, as well as pressure and differential pressure control devices, and flow and pressure control devices for liquids, gases and steam.