Spirax Sarco BRV2S direct acting pressure reducing valve_Spirax Sarco pressure reducing valve 25P

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Structural features and uses of Spirax Sarco pressure reducing valve
Spirax Sarco pressure reducing valves are compact, lightweight, easy to install, easy to debug and set, and easy to maintain. Spirax Sarco is a ductile iron direct-acting pressure reducing valve with threaded and flange connections. It is mainly used in steam systems. Compact structure, simple design, high quality electrodeless nickel coating on the surface. Compared with the series pressure reducing valve, it has a pressure balancing bellows inside, which can balance the pressure difference on the main valve head. The main valve is flat-sealed and has a self-cleaning function. Spirax Sarco direct-operated pressure reducing valves for steam, compressed air or other gas systems. When the load is stable, the downstream pressure can be accurately controlled. The body material of Spirax direct-operated pressure reducing valve is austenitic stainless steel, so it is mainly used for pressure control of clean steam systems, and can also be used in steam systems of other traditional industries.
With stainless steel bellows
With phosphor bronze bellows
Optional model with external induction tube, with stainless steel bellows
Optional model with external induction tube, with phosphor bronze bellows
Spirax Sarco pressure reducing valve
Spirax Sarco direct acting pressure reducing valve, direct acting pressure reducing valve, Spirax Sarco pressure reducing valve, imported Spirax Sarco pressure reducing valve< br/> Purpose of Spirax Sarco Pressure Reducing Valve
This valve has precise pressure reduction, stable performance, safety and reliability, easy installation and adjustment, and long service life.
Spirax Sarco pressure reducing valve reduces the inlet pressure to a required outlet pressure through throttling of the opening and closing parts, and keeps the outlet pressure stable. When the pressure reducing valve leaves the factory, the adjusting spring is in an uncompressed state. At this time, the main valve disc and the auxiliary valve disc are closed. When in use, turn the adjusting screw clockwise to compress the adjusting spring, causing the diaphragm to move upward and open the auxiliary valve disc, and the medium From the hole through the secondary valve seat to the hole above the piston, the piston moves downward under the action of the medium pressure to push the main valve disc away from the main valve seat, allowing the medium to flow to the back of the valve.
The Spirax Sarco pressure reducing valve enters the bottom of the diaphragm through the hole at the same time. When the pressure behind the valve exceeds the set pressure, the diaphragm is pushed upward to compress the adjusting spring, and the valve disc then moves in the closing direction, allowing the inflow to The medium above the piston decreases, and the pressure also decreases. At this time, the main valve disc moves up and down driven by the spring force of the main valve disc, which reduces the gap between the main valve disc and the main valve seat, and the medium flow rate also decreases. , so that the pressure behind the valve also drops to a new balance. On the contrary, when the pressure behind the valve is lower than the set pressure, the gap between the main valve disc and the main valve seat increases, and the medium flow rate also increases, so that the pressure behind the valve also increases. Then it increases to reach a new balance.
Working process of Spirax Sarco pressure reducing valve
The sensor/operator senses the pressure and directly moves the valve. The pressure directly acts on the set spring pressure. The change in pressure acts on the sensor/operator, which passes through the valve stem. Push the valve action. During the startup phase, the setting spring relaxes. The valve spring and inlet steam pressure cause the valve to close. Adjust the setting pressure and tighten the setting screw. The setting spring compression force overcomes the valve spring and inlet pressure. The valve opens and steam flows to the valve outlet to obtain the setting. The fixed-point bellows or diaphragm senses the reduced pressure. The bellows or diaphragm moves the valve position until the reduced medium pressure balances with the set spring force. Continue to adjust the set point to change the valve position to obtain the required pressure.
Features of Spirax Sarco Pressure Reducing Valve: Smallest volume, no external pipe, self-contained, cheap price, smallest displacement, lowest accuracy,
Installation of Spirax Sarco Pressure Reducing Valve
Spirax Sarco Gram-type direct-operated pressure reducing valve is specially designed for pressure control of steam and water systems. The maximum pressure can reach ℃ and the maximum temperature can reach ℃. The biggest feature of the
type pressure reducing valve is that it has a wide pressure reducing range. Valves of all calibers can provide six pressure ranges. At the same time, it has the advantage of a large pressure reduction ratio, and its maximum pressure reduction ratio can be as high as 100, so it is suitable for one-time pressure reduction of equipment that requires a large pressure reduction ratio, such as deaerators.
After using a rubber diaphragm for pressure reducing adjustment, it can also be used in the oil system
The type relief valve is opposite to the type pressure reducing valve and is used to control the upstream pressure
Its maximum pressure/temperature can reach /°C.
British Spirax Sarco steam pressure reducing valve is used for steam, compressed air or other gas systems. When the load is stable, the downstream pressure can be accurately controlled. Advanced manufacturing processes and technologies ensure reliable and durable stainless steel internal components, making it suitable for use in most industrial equipment.
Spirax Sarco is a ductile iron direct-acting pressure reducing valve with threaded and flange connections, mainly used in steam systems. Compact structure, simple design, high quality electrodeless nickel coating on the surface. Compared with the series pressure reducing valve, it has a pressure balancing bellows inside, which can balance the pressure difference on the main valve head. The main valve is flat-sealed and has a self-cleaning function.
Spirax Sarco direct-operated pressure reducing valves for steam, compressed air or other gas systems. When the load is stable, the downstream pressure can be accurately controlled. The valve body is made of austenitic stainless steel, so it is mainly used for pressure control of clean steam systems, and can also be used for steam systems in other traditional industries.