Data Sheet

ManualsBrandsEmerson ManualsTVs & monitors310A

Bulletin 71.2:310A

January 2009

D102066X012

www.emersonprocess.com/regulators

Type 310A-32A Pressure Reducing Regulator and

Type 310A-32A-32A Working Monitor Regulator

Introduction

The Type 310A pilot-operated high-pressure regulator

(Figure 1) is used where high capacity and accurate

control are essential. This regulator includes one

Type 32A pilot assembly mounted on the main valve

for pressure reducing or wide-open monitoring

applications, or two Type 32A pilots mounted on the

main valve for working monitor applications.

Features

• Accurate Control—Molded pilot diaphragms

provide a narrow proportional band and

registration of outlet pressure on the main

diaphragm allows excellent control sensitivity.

• Tight Shutoff—Throttling-sleeve design with

Polytetrauoroethylene (PTFE) seat in the body

ensures positive shutoff.

• High Capacity—Straight-through ow passage

allows exceptionally high capacities and

stable operation.

• Reduced Relief Requirements—Optional restricted

trim helps reduce relief valve size requirements; the

regulator is easily converted to full capacity by

changing the trim, if ow conditions increase.

• Fast Speed of Response—Designed to meet

stringent speed of response requirements for

turbine startup and fuel gas applications.

• Minimum Installation Space Required—Since

main valve design incorporates actuator spring,

less installation space is needed for the Type 310A

than for other regulators of comparable capacity.

Figure 1. Type 310A Regulator with Type 32A Pilot

W6278

Summary of content (16 pages)

PAGE 1
Bulletin 71.2:310A January 2009 Type 310A-32A Pressure Reducing Regulator and Type 310A-32A-32A Working Monitor Regulator Introduction The Type 310A pilot-operated high-pressure regulator (Figure 1) is used where high capacity and accurate control are essential. This regulator includes one Type 32A pilot assembly mounted on the main valve for pressure reducing or wide-open monitoring applications, or two Type 32A pilots mounted on the main valve for working monitor applications.
PAGE 2
Bulletin 71.
PAGE 3
Bulletin 71.2:310A PILOT DIAPHRAGM PLATE AND YOKE ASSEMBLY PILOT Control spring BLEED VALVE FIXED RESTRICTION BOTTOM DIAPHRAGM RELAY SEAT TOP DIAPHRAGM MAIN VALVE DIAPHRAGM THROTTLING SLEEVE MAIN VALVE SPRING E0696 STATIONARY VALVE PLUG INLET PRESSURE OUTLET PRESSURE atmospheric pressure LOADING PRESSURE PILOT SUPPLY PRESSURE Figure 2.
PAGE 4
Bulletin 71.2:310A E0694 E0695 Figure 3. Typical Wide-Open Monitor Figure 4. Typical Working Monitor throttling sleeve toward the stationary valve plug to decrease the gas ﬂow to the downstream system. of the Type 32A monitoring pilot. A plug in both the working and monitoring pilots makes the internal bleed nonfunctional. A restriction placed in the external tubing between the diaphragm loading pressure and the intermediate pressure acts as a downstream bleed.
PAGE 5
Bulletin 71.2:310A WORKING PILOT PLUG RESTRICTION SPACER E0693 INLET PRESSURE PLUG MONITORING PILOT OUTLET PRESSURE ATMOSPHERIC PRESSURE LOADING PRESSURE INTERMEDIATE PRESSURE PILOT SUPPLY PRESSURE Figure 5. Type 310A-32A-32A Working Monitor Regulator Operational Schematic Table 1. Outlet Pressure Ranges OUTLET PRESSURE RANGE, PSIG (bar) SPRING COLOR SPRING PART NUMBER 10 to 20 (0,69 to 1,4) PROPORTIONAL BAND, PSIG (bar) 0.
PAGE 6
Bulletin 71.2:310A LOADING TUBING HAND VALVE 1/4-INCH NPT PILOT SUPPLY CONNECTION VENT VALVE LOCATE 6 TO 10 PIPE DIAMETERS FROM VALVE OUTLET VENT VALVE BLOCK VALVE HAND VALVE BLOCK VALVE ALTERNATE DOWNSTREAM CONTROL LINE TAP 1/2-INCH (13 mm) DOWNSTREAM CONTROL LINE BYPASS VALVE VENT VALVE BYPASS LINE 24B4134 B2444 Figure 6.
PAGE 7
Bulletin 71.2:310A 24B4134 B2445_2 FLEXIBLE WIDE-OPEN MONITOR ARRANGEMENT THAT PERMITS WIDE-OPEN MONITOR TO BE EITHER UPSTREAM OR DOWNSTREAM OF THE WORKING REGULATOR MINIMUM PIPING WIDE-OPEN MONITOR ARRANGEMENT THAT REQUIRES WIDE-OPEN MONITOR ALWAYS TO BE UPSTREAM OF WORKING REGULATOR Figure 7. Typical Wide-Open Monitor Installation Table 3. Maximum Travel BODY SIZE, INCHES (DN) MAXIMUM TRAVEL, INCH (mm) 1 (25) 0.5 (13) 2 (50) 0.875 (22) 3 (80) 1 (25) 4 (100) 1.
PAGE 8
Bulletin 71.2:310A Table 5. Regulating Flow Coefﬁcients for Body Size Piping COEFFICIENT AT PERCENT OF MAXIMUM TRAVEL 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% TRIM SIZE (PERCENT OF FLOW CAPACITY) BY BODY SIZE, INCHES (DN) 1 (25) 2 (50) 3 (80) 4 (100) 4 x 6 (100 x 150) 100% 50% 30% 100% 70% 50% 30% 100% 70% 50% 30% 100% 70% 50% 30% 100% 70% 50% Cg 65 60 56 210 200 190 185 346 340 325 305 805 725 615 510 895 800 780 30% 760 Cv 2.2 2.0 2.0 7.6 7.5 6.9 7.
PAGE 9
Bulletin 71.2:310A Table 8. 1-inch (DN 25) Body Capacities with 100% Trim and Body Size Piping (Thousands of SCFH (Nm3/h)) of 0.
PAGE 10
Bulletin 71.2:310A Table 9. 2-inch (DN 50) Body Capacities with 100% Trim and Body Size Piping (Thousands of SCFH (Nm3/h)) of 0.
PAGE 11
Bulletin 71.2:310A Table 10. 3-inch (DN 80) Body Capacities with 100% Trim and Body Size Piping (Thousands of SCFH (Nm3/h)) of 0.
PAGE 12
Bulletin 71.2:310A Table 11. 4-inch (DN 100) Body Capacities with 100% Trim and Body Size Piping (Thousands of SCFH (Nm3/h)) of 0.
PAGE 13
Bulletin 71.2:310A Table 12. 4 x 6-inch (DN 100 x 150) Body Capacities with 100% Trim and 2:1 Swaged Piping (Thousands of scfh (Nm3/h)) of 0.
PAGE 14
Bulletin 71.2:310A 8.31 (211) Type 32A 1/4-inch NPT supply connection e 1/2-INCH NPT control CONNECTION both sides g b l m A TYPE 310A REGULATOR WITH Type 32a PILOT 9.62 (244) f MONITORING PILOT 1/2-INCH NPT DISTRIBUTION PRESSURE CONNECTION 8.
PAGE 15
Bulletin 71.
PAGE 16
Bulletin 71.2:310A 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.