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R622 series

R622 series
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Bulletin 71.1:R622 June 2010 Type R622 Pressure Reducing Regulator • Compact Design • High Capacity • Protective Inlet Screen • Internal Relief • Light Weight W8806 • Inlet and Outlet Pressure Gauge Taps Figure 1. Type R622 Pressure Reducing Regulator Introduction applications. These regulators can be used with natural, manufactured, or propane gases and have the same inlet and outlet pressure capabilities. D103094X012 Type R622 direct-operated, spring-loaded regulators provide economical pressure reducing control in a variety of residential, commercial, and industrial www.fisherregulators.com

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Body Size and End Connection StyleC) Maximum Allowable Inlet Pressure^) Except 1.8 to 2.2-inches w.c. (4 to 5 mbar) spring range which has operating and emergency Maximum Allowable Outlet (Casing) Pressure^) Operating to Avoid Internal Part Damage: 3 psid (0,21 bard) above outlet pressure setting Outlet Pressure Ranges Orifice Size Flow Coefficients Wide-Open Cg for Relief Sizing: 12.5 Wide-Open Cv for Relief Sizing: 0.36 Flow Capacities Pressure Registration Relief Performance Internal Relief Performance (20 to 55 mbar) for setpoints from from 20-inches w.c. to 2.2 psig (50 to 152 mbar)...

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Bulletin 71.1:R622 control (Main) spring upper spring case relief valve spring DIAPHRAGM valve disk M1027 orifice lever stem PUSHER POST ERUSSERP CIREHPSOMTA ERUSSERP TELTUO ERUSSERP TELNI INLET PRESSURE ATMOSPHERIC PRESSURE OUTLET PRESSURE PRESSURE OUTLET INLET PRESSURE ATMOSPHERIC PRESSURE Figure 2. Type R622 Operational Schematic Principle of Operation Installation Refer to Figure 2. When downstream demand decreases, the pressure under the diaphragm increases. This pressure overcomes the regulator setting (which is set by the control spring). Through the action of the pusher post...

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Bulletin 71.1:R622 Position 1 Vent over inlet Position 2 Position 4 Position 3 Vent over outlet Figure 3. Vent Position Overpressure Protection Capacity Information The wide-open Cg for relief sizing (see Specifications section) along with the capacity information should be used in choosing appropriate overpressure protection devices to ensure that none of the limits in the Specifications section are exceeded. The high efficiency flow-through design provides maximum capacity for a given orifice size. Table 2 gives Type R622 regulator flow capacities at selected inlet pressures and outlet...

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Bulletin 71.1:R622 5 (0,35) 2 psig (0,14 bar) outlet pressure, PSIG (bar) 4 (0,28) 28-inches w.c. (70 mbar) 3 (0,21) 14-inches w.c. (35 mbar) 2 (0,14) 1 (69 mbar) 2-inches w.c. (5 mbar) 11-inches w.c. (27 mbar) 7-inches w.c. (17 mbar) 5-inches w.c. (12 mbar) 0 0 20 (1,4) 40 (2,8) 60 (4,1) 80 (5,5) 100 (6,9) 120 (8,3) INLET PRESSURE, PSIG (bar) NOTE: TESTED UNDER THE FOLLOWING CONDITIONS: 10 PSIG (0,69 bar) INLET PRESSURE, 7-INCHES W.C. (17 mbar) OUTLET PRESSURE SETTING, AND 50 scfh (1,3 Nm3/h) OF 0.6 SPECIFIC GRAVITY NATURAL GAS Figure 4. Industrial Relief Performance 5.56 (141) 5.29 (134)...

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Table 2. Typical Regulating Capacities in SCFH (Nm3/h) of 0.6 Specific Gravity Natural Gas for Type R622 Regulator

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Table 2. Typical Regulating Capacities in SCFH (Nm3/h) of 0.6 specific gravity natural gas for Type R622 Regulator (continued) For Critical Pressure Drops Use the following equation for critical pressure drops (absolute outlet pressure equal to or less than one-half of the absolute inlet pressure): For Non-Critical Pressure Drops For pressure drops lower than critical (absolute outlet pressure greater than one-half of absolute inlet pressure), use the following formula: Q = gas flow rate, SCFH T = absolute temperature of gas at inlet, °Rankine P., = absolute inlet pressure, psia AP =...

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Line Size_ Fluid Type_ Specification Worksheet Specific Gravity. Does the Application Require Overpressure Protection? Maximum Inlet Pressure- Minimum Inlet Pressure_ Differential Pressure_ Maximum Flow. Accuracy Requirements: Less Than of Equal To: Construction Material Requirements (if known): Industrial Regulators Emerson Process Management Middle East and Africa Dubai, United Arab Emirates Emerson Process Management Emerson Process Management Tescom Corporation For further information visit www.fisherregulators.com The Emerson logo is a trademark and service mark of Emerson Electric Co....

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