Spirotherm DP27 Pressure Reducing Valve

**Spirax Sarco DP27 Pressure Reducing Valve, Spirax Sarco DP27 Pilot-Operated Pressure Reducing Valve** **Spirax Sarco DP27 Pressure Reducing Valve Description:** The DP27, DP27E, DP27G, DP27GY, DP27R, and DP27Y pilot-operated pressure reducing valves are constructed from ductile iron. Available types: DP27 is suitable for applications involving steam or compressed air. DP27E is designed for steam applications and includes an electric solenoid valve in the pipeline assembly, allowing remote shut-off or timing device operation. DP27G is suitable for applications in compressed air and inert gases industries. Its design incorporates rubber soft seal testing and the main valve. Note: Not suitable for oxygen service or with solenoid valves. DP27GY is used for compressed air, inert industrial gases, and critical low-pressure control applications. Its design features soft seal testing and the main valve, using a lower rate control spring within a downstream pressure range of 0.2 - 3.0 bar. Note: Not suitable for oxygen service or with solenoid valves. DP27R allows for remote adjustment by changing the pressure signal to the diaphragm. This is typically achieved using the Spirax Sarco Monnier pressure regulator with a supply of compressed air. DP27Y is suitable for applications in filters or critical low-pressure control. It uses a lower rate control spring with a downstream pressure range of 0.2 - 3.0 bar. Spirax Sarco Certification - this product is available with the manufacturer's typical test report. Note: All certification/testing requirements must be placed in order of time. Sizes and pipe connections: DN15LC - Low Capacity version (not available for DP27G or DP27GY) DN15, DN20, DN25, DN32, DN40, and DN50 Screwed BSP (BS 21 parallel) or NPT (DN15 to DN25 only). Standard flanges: DN15 - DN50 EN 1092 PN16 and PN25 DN25 - DN50 BS 10 Table H and ASME 300 Flanges available on request: DN15 - DN50 JIS 10/16 and ASME 150 DN15 - DN20 BS 10 Table F DN15 ASME 300 Pressure Reducing Valve Sizes/Weights (approximate) in mm, kg: Note that the capacity quoted for the Spirax Sarco DP27 Pressure Reducing Valve is based on being fitted with an external pressure sensing pipe valve. Reliance on internal pressure sensing in the piping would mean that capacity may be reduced. In cases of low downstream pressures, this can reduce the capacity of the valve by up to 30%. How to use the chart for saturated steam: The valve needs to reduce from 6 bar to 4 bar at 600 kg/hour. Find the point where the 6-bar upstream pressure line crosses the 4-bar horizontal line of downstream pressure. Drop vertically; this gives the capacity of all DP sizes under these conditions. A DN32 valve of small size will carry the required load. For superheated steam, since the correction factors for superheated steam are higher, the volume must be applied from the chart obtained above. The correction factor for superheat at 55°C is 0.95 and for 100°C it is 0.9. Using the given example for saturated steam, a DN32 valve would yield 740 x 0.95 = 703 kg/hour if the steam is superheated by 55°C. It is still large enough to carry the required load of 600 kg/hour. How to order spare parts: Always utilize the description column provided for available parts and the size and type of pressure reducing valve for your country. For example: 1 main valve assembly 1 “Spirax Sarco type 27 pressure reducing valve. How to fit: See the installation and maintenance manual provided for the pressure reducing valve. Request additional copies if needed. Interchangeable Parts: The table below shows how some components can be interchanged in specific sizes. For example, the main diaphragm for the threaded valves of ½” and ¾” is common for these sizes, with the letter A diaphragm, and the letter C indicating a diaphragm common for DN40 and DN50 valves. All parts can be interchanged with DP27T and marked † for the temperature control of 37D. Our company also supplies similar products: **Spirax Sarco Steam Pressure Reducing Valve, Spirax Sarco Pilot Operated Diaphragm Pressure Reducing Valve, Spirax Sarco DP27 Pressure Reducing Valve**