The relief valve is installed on the equipment, containers, or pipe, overpressure protection, when the pressure in the container or pipe exceeds allowable values, open valve automatic discharge medium; When pressure is reduced to the specified value, the valve automatically shut down. The relief valve can be according to different driving mode can be divided into direct acting and pilot operated. Direct type for direct drive valve inlet system pressure, at this point, it is provided by spring or a heavy hammer mechanical load to overcome the effect of the medium pressure under the disc. Guiding type is that it is driven by a structure to the guide, using the agency release or impose a closing force makes the valve open or closed. Relief valve according to the structure form of different can be divided into: 1, the lever and weight safety valve after heavy hammer by leveraging the power of the load on the disc. Advantage is in the process of the valve opening and closing force load on the disc remains the same. The disadvantage is that the vibration is sensitive, back to the poor performance. They can be used for fixed devices. 2, spring safety valve with compression spring force to balance disc pressure, make the safety valve seal. Its advantage is high sensitivity, light and relief valve installation position open, the relief valve is relatively commonly used. Defect is spring compression force changes with the spring deformation, at high temperature, heat insulation and heat dissipation problems spring. 3, impulse safety valve to the main valve and auxiliary valve design together, through the role of the pulse effect to drive the main valve and auxiliary Industrial Valves. Often used in large diameter, large displacement and high pressure system. 4, raise safety valve opening is not big, suitable for the liquid medium and small displacement of the occasion. 5, the whole qi safety valve opening is larger, with the aid of the impact of gas medium, open the valve to enough height, discharge excess medium. 6, fully enclosed open the relief valve discharge medium sealing, through the discharge pipe drainage, commonly used in special medium inflammable, explosive, toxic or occasion. Open semi-enclosed safety Industrial Valves relief valve, part of the medium from the discharge pipe, part of the media from the valve seat and valve stem clearance in the atmosphere. Open the relief valve opens, discharge medium into the atmosphere, suitable for medium from pollution. Pilot operated relief valve is composed of the main valve and a pilot valve, pilot valve after the system is under pressure to open or close the main valve. In addition, from the relief valve on the external structure, but also can be divided into with and without spanner wrench, with and without corrugated pipe, corrugated pipe with and without fin heat sinks, etc. A bellows valve suitable for corrosive medium or back pressure volatile situations; A wrench safety valve in case of an emergency, by manual operation pressure; A heat sink of the relief valve is suitable for the occasion of temperature greater than 300 ℃.
However, with the increased prevalence of water gate valve, it has become far more affordable.
Shenzhen Mech Valve Trading Co., Ltd. is a professional manufacturer of offering some of the best in class wedge gate valve solutions to global market. Click Mech Valve to learn more.
resilient seated gate valve has a very good repute over the global market.
By investing in an ethical supply chain, Shenzhen Mech Valve Trading Co., Ltd. position ourselves to engage with a driven, engaged customer base.