HIGH PRESSURE RELIEF VALVE

Pressure relief are self-operating that is installed in a process system to protect against over pressurization of the system. High are designed to continuously regulate fluid flow, and to keep from exceeding a preset value. There are a wide variety of designs, but most resemble diaphragm , globe , or swing check . With many of these designs, a helical or hydraulic spring is used to maintain constant force acting on the backside of the disk or diaphragm, causing the air to be normally closed. When the force exerted by the process stream (i.e. fluid ) on the disk is greater than the constant force exerted by the spring, the air opens allowing process fluid to exit the until the fluid falls below the preset value. These can be preset to a specific or they may be adjustable. The refrigeration category covers a wide spectrum of products designed to facilitate, control, maintain, meter, or read the flow of material through hoses, pipes or tubing. The material in question can be liquid, gaseous, or semi-solid (colloids and slurries). Among the considerations in specifying are size, rating, controlled range, media temperature, and flow. Connection choices for include threaded, compression fitting, bolt flange, clamp flange, union, tube fitting, butt weld, socket weld/solder, and metal face seal. The actuation types that can be chosen for heater water weeping include mechanical device, electric, electro-hydraulic, electro-pneumatic, pilot operated, pneumatic, thermally actuated, and other. Media choices for include air, breathable air, compressed air, water, hot water, cold water, ground water, potable water, salt water, wastewater, gas, gasoline/diesel fuel, high purity gas, LP gas, natural gas, sour gas, and specialty/corrosive gases. Other choices for media include adhesives, concrete/grout, coolants, hazardous materials, high viscosity fluids, hydraulic fluid, liquid metal, lubricants, oil, powder/solids, rendering wastes, sludge, slurry/ash slurry, and steam.