Bulletin 71.4:SR8 May 2010 Type SR8 Sanitary Backpressure Regulator Sanitary Design Standards Superior Flow Performance and Accuracy Wide Control Range Diaphragm Cycle Life Highly Stable Large Turndown Ratio Tight Shutoff Easy Maintenance Covered Adjusting Screw Self-Draining W8967 Figure 1.
Bulletin 71.4:SR8 Features • Nonporous Polished Body and Internals for High Purity Processing—Body, plug, and diaphragm plate (when applicable) are machined from 316L Stainless steel. All internal wetted surfaces are mechanically polished and electropolished to 20 µin (0,5 µm) Ra. • Wide Control Range—Typical setpoints range from 2 to 125 psig (0,14 to 8,6 bar) to cover a wide range of applications.
Bulletin 71.
Bulletin 71.4:SR8 Table 1. Set Pressure Ranges, Control Spring Data, and Maximum Differential Pressures Body Size, nps (DN) Set Pressure Ranges, psig (bar) 2 to 8 (0,14 to 0,55)(1) 1/2 and 3/4 (15 and 20) Color Code Part Number Wire Diameter, Inch (mm) Free Length, Inch (mm) 15 (1,0) Blue GE06780X012 0.138 (3,51) 2.75 (69,9) 5 to 25 (0,34 to 1,7) 40 (2,7) Silver GE06781X012 0.177 (4,50) 2.75 (69,9) 10 to 50 (0,69 to 3,4) 100 (6,9) Green GE06782X012 0.192 (4,88) 2.
Bulletin 71.4:SR8 Table 4. Flow Coefficients WIDE OPEN COEFFECIENTS SIZE, NPS (DN) C1 Km FL XT Fd 1.3 19.1 0.54 0.73 0.23 0.40 3.1 3.5 22.8 0.61 0.78 0.33 0.41 7.2 10.1 28.1 0.63 0.79 0.50 0.42 216 7.6 10.8 28.4 0.60 0.77 0.51 0.42 309 10.9 15.5 28.4 0.68 0.82 0.51 0.40 2 (50) 962 34.4 48 28.0 0.60 0.78 0.49 0.32 3 (80) 1114 40.3 56 27.6 0.44 0.67 0.48 0.36 Cg Cv Cs 27 1.
Bulletin 71.4:SR8 Table 5. Cv Coefficients Spring Range, psig (bar) 2 to 8 (0,14 to 0,55) 5 to 25 (0,34 to 1,7) 10 to 50 (0,69 to 3,4) 35 to 100 (2,4 to 6,9) 75 to 125 (5,2 to 8,6) Cv at % Build-up Set Pressure, psig (bar) Elastomer Diaphragm Metal Diaphragm NPS 1/2 (DN 15) NPS 1/2 (DN 15) 10% 20% 30% 40% 10% 20% 2 (0,14) 0.45 0.55 0.65 0.75 30% 40% 5 (0,34) 0.45 0.67 0.84 0.99 8 (0,55) 0.50 0.80 1.03 1.22 5 (0,34) 0.35 0.49 0.62 0.80 0.32 0.36 0.40 0.
Bulletin 71.4:SR8 Table 5. Cv Coefficients (continued) Spring Range, psig (bar) 2 to 8 (0,14 to 0,55) 5 to 25 (0,34 to 1,7) 15 to 70 (1,0 to 4,8) 25 to 90 (1,7 to 6,2) 35 to 100 (2,4 to 6,9) 75 to 125 (5,2 to 8,6) Set Pressure, psig (bar) Cv at % Build-up Elastomer Diaphragm Metal Diaphragm NPS 1 (DN 25) NPS 1 (DN 25) 10% 20% 30% 40% 10% 20% 2 (0,14) 1.79 2.48 3.02 4.13 30% 40% 5 (0,34) 1.82 3.14 4.37 5.75 8 (0,55) 2.18 3.70 5.29 6.57 5 (0,34) 1.37 1.79 2.28 2.91 1.
Bulletin 71.4:SR8 Table 5. Cv Coefficients (continued) Cv at % Build-up Set Pressure, Psig (bar) Spring Range, Psig (bar) 2 to 8 (0,14 to 0,55) 5 to 25 (0,34 to 1,7) 15 to 70 (1,0 to 4,8) 25 to 90 (1,7 to 6,2) 35 to 100 (2,4 to 6,9) 75 to 125 (5,2 to 8,6) Elastomer Diaphragm Metal Diaphragm NPS 1-1/2 (DN 40) NPS 1-1/2 (DN 40) 10% 20% 30% 40% 2 (0,14) 1.95 2.54 2.81 3.31 10% 20% 30% 40% 5 (0,34) 1.55 2.73 4.87 6.66 8 (0,55) 1.47 3.05 6.32 8.91 5 (0,34) 1.37 1.64 2.54 2.
Bulletin 71.4:SR8 Table 6.
Bulletin 71.4:SR8 Table 6.
Bulletin 71.4:SR8 Table 6.
Bulletin 71.4:SR8 Table 7. Steam Capacities Spring Range, psig (bar) 2 to 8 (0,14 to 0,55) 5 to 25 (0,34 to 1,7) 10 to 50 (0,69 to 3,4) 35 to 100 (2,4 to 6,9) 75 to 125 (5,2 to 8,6) Set Pressure, psig (bar) Capacities in pounds per hour (kg/h) Saturated Steam at % Build-up Elastomer Diaphragm Metal Diaphragm NPS 1/2 (DN 15) NPS 1/2 (DN 15) 10% 20% 30% 40% 10% 20% 2 (0,14) 6.4 (2,9) 8.3 (3,8) 10 (4,5) 12 (5,4) 30% 40% 5 (0,34) 9.
Bulletin 71.4:SR8 Table 7.
Bulletin 71.4:SR8 Table 7.
Bulletin 71.4:SR8 Table 8. Liquid Capacities Spring Range, psig (bar) 2 to 8 (0,14 to 0,55) 5 to 25 (0,34 to 1,7) 10 to 50 (0,69 to 3,4) 35 to 100 (2,4 to 6,9) 75 to 125 (5,2 to 8,6) Set Pressure, psig (bar) Capacities in gpm (l/min) Water at % Build-up Elastomer Diaphragm Metal Diaphragm NPS 1/2 (DN 15) NPS 1/2 (DN 15) 10% 20% 30% 40% 10% 20% 2 (0,14) 0.7 (2,6) 0.9 (3,4) 1.1 (4,2) 1.2 (4,5) 30% 40% 5 (0,34) 1.1 (4,2) 1.6 (6,1) 2.1 (7,9) 2.6 (9,8) 8 (0,55) 1.5 (5,7) 2.
Bulletin 71.4:SR8 Table 8. Liquid Capacities (continued) Spring Range, psig (bar) 2 to 8 (0,14 to 0,55) 5 to 25 (0,34 to 1,7) 15 to 70 (1,0 to 4,8) 25 to 90 (1,7 to 6,2) 35 to 100 (2,4 to 6,9) 75 to 125 (5,2 to 8,6) Set Pressure, psig (bar) Capacities in gpm (l/min) Water at % Build-up Elastomer Diaphragm Metal Diaphragm NPS 1 (DN 25) NPS 1 (DN 25) 10% 20% 30% 40% 10% 20% 2 (0,14) 2.7 (10) 3.8 (14) 4.9 (19) 6.9 (26) 30% 40% 5 (0,34) 4.3 (16) 7.7 (29) 11 (42) 15 (57) 8 (0,55) 6.
Bulletin 71.4:SR8 Table 8. Liquid Capacities (continued) Capacities in GPM (l/min) Water at % Build-up Set Pressure, Psig (bar) Spring Range, Psig (bar) 2 to 8 (0,14 to 0,55) 5 to 25 (0,34 to 1,7) 15 to 70 (1,0 to 4,8) 25 to 90 (1,7 to 6,2) 35 to 100 (2,4 to 6,9) 75 to 125 (5,2 to 8,6) Elastomer Diaphragm Metal Diaphragm NPS 1-1/2 (DN 40) NPS 1-1/2 (DN 40) 10% 20% 30% 40% 2 (0,14) 2.9 (11) 3.9 (15) 4.5 (17) 5.5 (21) 10% 20% 30% 40% 5 (0,34) 3.6 (14) 6.
Bulletin 71.4:SR8 D (maxIMUM) G a C J Optional T-Handle A C D G J 1/2 (15) 3.00 (76) 5.11 (130) 7.17 (182) 1.50 (38) 4.00 (102) 3/4 (20) 3.00 (76) 5.11 (130) 7.17 (182) 1.50 (38) 4.00 (102) 1 (25) 3.25 (83) 6.20 (158) 8.20 (208) 2.00 (51) 5.00 (127) 1-1/2 (40) 3.25 (83) 6.20 (158) 8.20 (208) 2.50 (64) 5.00 (127) 1-1/2 x 1 (40 x 25) 3.25 (83) 6.20 (158) 8.20 (208) 2.50 (64) 5.00 (127) 2 (50) 5.50 (140) 10.6 (269) 13.76 (350) 4.00 (102) 5.00 (127) 3 (80) 5.
Bulletin 71.
Bulletin 71.4:SR8 Industrial Regulators Natural Gas Technologies TESCOM Emerson Process Management Regulator Technologies, Inc. Emerson Process Management Regulator Technologies, Inc. Emerson Process Management Tescom Corporation USA - Headquarters McKinney, Texas 75069-1872 USA Tel: 1-800-558-5853 Outside U.S. 1-972-548-3574 USA - Headquarters McKinney, Texas 75069-1872 USA Tel: 1-800-558-5853 Outside U.S.
