
Catalog excerpts

CONTROL VALVE DESCRIPTION: Pennant offers the top-guided Globe Control Valve with inter convertible facility of fail to open or fail to close type of operation. The product features a single-port design configuration, which permits numerous trims, actuation and instrumentation solutions to meet a wide range of automated process and control applications. Rugged topguiding of the plug ensures maximum valve stability under the most adverse conditions. Neatly engineered trim design; carefully sized actuator combined with a highly reliable positioner ensures high turndown ratio even at minimum flowrate conditions. End Connection: • Raised Face Flanged End (ASME B16.5) standard • Flat Faced Flanged End (Optional Special) Valve Rating: Features: 1. High turndown ratio upto 40:1 2. Excellent Flow Control Rangeability 3. Tight-shutoff; Class IV as standard Class V on request 4. High Flow Capacity 5. Designed and tested to deliver 100% performance under specified operating conditions ANSI #150, #300; higher classes available on request Leakage Class: Class IV standard/Class V on request Gland Packing: PTFE up to 392 °F – For Liquid/Gases Graphite up to 1112 °F – For Steam The different types of control valves are classified by a relationship between the valve stem position and the flow rate through the valve. This control valve characteristic is assigned with the assumptions that the stem position indicates the extent of the valve opening and that the pressure difference is determined by the valve alone. There are three basic types of control valves 1. Quick Opening - For frequent on-off services. Process where instantly large flow is needed like safety systems or cooling systems. 2. Linear - Typically used for level control or flow loops, in steady state systems where pressure drop across the valve is expected to remain fairly constant 3. Equal Percentage - Typically used for pressure, temperature, flow control used where large changes in temperature drop across the valve is expected. Used in temperature and pressure control loops All Dimensions in inches. weights
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PART NAME GUIDE BUSH GLAND WASHER GLAND PACKING GLAND FOLLOWER BONNET GASKET GRAPHITE WITH SS REIN. Sizes: ½" to 8" as standard Overall Dimensions (inch) FACE TO FACE DIMENSIONS: RF Flange * Varies with Valve Size (4~16) Valve Size INCH MATERIAL OF CONSTRUCTION: Valve trim material as well as body material is selected on the basis of process fluid, pressure drop, contamination and environmental conditions. Some of the material is listed below: Body Material: Standard MOC is WCB CF8, CF8M – available on request Trim Material: Standard MOC is SS410 SS304, SS316, SS316L, SS420 available on...
Open the catalog to page 2
AVAILABLE ACCESSORIES: 1. Pneumatic Actuator (Reverse/Direct Acting) Valve Size Trim Size 7. Design Temperature and Pressure 2. Positioner (Pneumatic/Electro Pneumatic) 3. Electro Pneumatic Convertor 4. Solenoid Valves 5. Air Filter Regulator AVAILABLE SPARES: Trims, Gland Packing 2. Density & Velocity of Line Fluid 3. Vapor Pressure of Line Fluid 4. Maximum, normal & minimum Flow Rate 5. Maximum, normal & minimum Inlet & Outlet Pressure 6. Maximum, normal & minimum Inlet & Outlet Temperature 10. Type of End Connection required 11. Leakage Class required 12. Maximum Compressed Air Pressure...
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