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Plug valves are valves with cylindrical or conically-tapered "plugs" which can be rotated inside the valve body to control flow through the valve. Plug valves are simple and often economical. When the plug is conically-tapered, the stem/handle is typically attached to the larger diameter end of the plug. The stem and handle often come in one piece, often a simple, approximately L-shaped handle attached to the end of the plug. The other end of the plug is often exposed to the outside of the valve too, but with a mechanism which retains the plug in the body.
D | D | A | B | C | E |
Inches | MM | MM | MM | MM | MM |
1 | 25.4 | 140 | 55 | 110 | 90 |
1 1/2 | 38.1 | 180 | 70 | 140 | 130 |
2 | 50.8 | 185 | 82 | 164 | 164 |
2 1/2 | 63.5 | 240 | 105 | 210 | 160 |
3 | 76.2 | 260 | 110 | 220 | 190 |
4 | 101.6 | 315 | 142 | 284 | 170 |
Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, and/or inexpensive.
Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal.
Nominal Size | Nominal Size | ||
D | D | B | C |
Inches | MM | MM | MM |
1 | 25.4 | 75.0 | 64.0 |
1 1/2 | 38.1 | 90.0 | 77.0 |
2 | 50.8 | 100.0 | 91.0 |
2 1/2 | 63.5 | 110.0 | 106.0 |
3 | 76.2 | 135.0 | 122.0 |
4 | 101.6 | 150.0 | 163.0 |
A flow control valve regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters or temperature gauges.
Control valves are normally fitted with actuators and positioners. Pneumatically-actuated globe valves and Diaphragm Valves are widely used for control purposes in many industries, although quarter-turn types such as (modified) ball, gate and butterfly valves are also used.
D | D | A | Opening |
Inches | MM | MM | "C"MM |
1 1/2 | 38.1 | 90.0 | 6.0 |
2 | 50.8 | 108.0 | 8.0 |
2 1/2 | 63.5 | 128.0 | 10.0 |
3 | 76.2 | 135.0 | 12.0 |
The Pressure Relief Valve (PRV) is a type of valve used to control or limit the pressure in a system or vessel which can build up by a process upset, instrument or equipment failure, or fire. The pressure is relieved by allowing the pressurised fluid to flow from an auxiliary passage out of the system. The relief valve is designed or set to open at a predetermined set pressure to protect pressure vessels and other equipment from being subjected to pressures that exceed their design limits.
Nom.Size | Nom.Size | |||||
D | D | A | B | C | E | |
INCHES | MM | MM | MM | MM | MM | |
PRV-A | 2" | 50.8 | 140.0 | 125.0 | 92.0 | 265.0 |
PRV-B | 2" | 50.8 | 310.0 | 125.0 | 105.0 | 435.0 |
Flow Rate | Max. Counter | 106.0 | ||||
L/Hr | Pressure (Kg./Sq.Cm.) | |||||
PRV-A | 0-7000 3.0 | |||||
PRV-A | 7000-20000 5.5 | |||||
PRV-B | 0-7000 5.5 | |||||
PRV-B | 0-15000 0.5 |
A flow control valve regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters or temperature gauges.
Control valves are normally fitted with actuators and positioners. Pneumatically-actuated globe valves and Diaphragm Valves are widely used for control purposes in many industries, although quarter-turn types such as (modified) ball, gate and butterfly valves are also used.
valves division of sri pumps group has successfully developed a wide range of butterfly valves, either with manually operated handle or with automated rotary actuators having its end connection conforming to sms, idf, din unions or with plain weldable type ends.
these butterfly valves have naturally high pressure-recovery factor, which is used to predict the pressure recovery occurring between the vena contract and the outlet of the valve. The valves ability to recover from the pressure drop is influenced by the geometry of the wafer-style body, the maximum flow capacity of the valve, and the service's ability to cavities or chokes. Because of the high pressure recovery, butterfly valves work exceptionally well with low-pressure drop applications. The material construction of the valve is ss304, 304l, 316 & 316l.
Nom. Size | N.Size | Gasket Dia | |||||||||||
D | D | d | Dia "D" | A | B | C | D | E | F | G | H | L | M |
Inches | MM | MM | MM | MM | MM | MM | MM | MM | MM | MM | MM | MM | MM |
1" | 25.4 | 22.6 | 25.4 | 33.6 | 15.5 | 42.0 | 16.8 | 24.5 | 58.0 | 8.0 | 47.0 | 38.5 | 51.0 |
1½" | 38.1 | 35.6 | 38.5 | 47.8 | 16.7 | 49.0 | 23.9 | 32.5 | 78.0 | 8.0 | 47.0 | 43.5 | 52.5 |
2" | 50.8 | 48.6 | 51.5 | 61.0 | 16.6 | 58.5 | 30.5 | 42.0 | 99.0 | 8.0 | 52.0 | 46.0 | 55.0 |
2½" | 63.5 | 60.3 | 64.0 | 71.8 | 17.5 | 69.5 | 35.9 | 52.0 | 117.0 | 8.0 | 54.0 | 51.0 | 56.0 |
3" | 76.2 | 72.8 | 76.6 | 84.6 | 16.6 | 73.5 | 42.3 | 58.5 | 132.0 | 10.0 | 62.0 | 55.0 | 61.0 |
4" | 101.6 | 97.6 | 102.5 | 104.4 | 16.0 | 93.0 | 52.2 | 77.0 | 163.0 | 10.0 | 80.0 | 75.0 | 72.0 |