Data Sheet

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Bulletin 74.1:T205

December 2014

D103747X012

Contents

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Speci cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Overpressure Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Capacity Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Features

Low-pressure setting and fast speed of response –

T205 Series regulator has a low-pressure setting as

low as 1 in. w.c. / 2.5 mbar. It can respond quickly to

downstream  ow demand and pressure changes due to

direct-operated structure.

Accurate control and small lockup pressure – Large

diaphragm area provides very accurate throttling control

at low pressure settings. An added bene t of lever style

regulator is that it can shut off the process  uid using small

lockup pressure.

Multiple applications – T205 Series regulator can be used

for a wide variety of gases including air, nitrogen, natural

gas, sour gas (NACE Construction), butane and propane.

Corrosion resistance – Multiple regulator constructions

are available in a variety of materials for compatibility with

corrosive process gases.

Easy conversion between constructions – Converts

easily from the Type T205 to the Type T205M with two

O-rings and one machine screw.

Sour gas service capability – Available construction to

meet NACE MR0175-2002.

www.fisherregulators.com

T205 Series Tank Blanketing Regulators

Figure 1. Type T205 Tank Blanketing Regulator

Summary of content (32 pages)

PAGE 1
Bulletin 74.1:T205 December 2014 T205 Series Tank Blanketing Regulators Figure 1. Type T205 Tank Blanketing Regulator Contents Features Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Low-pressure setting and fast speed of response – T205 Series regulator has a low-pressure setting as low as 1 in. w.c. / 2.5 mbar. It can respond quickly to downstream flow demand and pressure changes due to direct-operated structure. Introduction . . . . . . . . . . . . . . .
PAGE 2
Bulletin 74.1:T205 Specifications The Specifications section on this page provides the ratings and other specifications for the T205 Series. Factory specification such as type, maximum inlet pressure, maximum temperature, maximum outlet pressure, spring range and orifice size are stamped on the nameplate fastened on the regulator at the factory. Product Configurations Type T205: Tank blanketing regulator with outlet pressure range of 1 in. w.c. to 7 psig / 2.5 mbar to 0.
PAGE 3
Bulletin 74.1:T205 VALVE DISK STEM LEVER PUSHER POST PIPE PLUG DIAPHRAGM PITOT TUBE CONTROL SPRING TYPE Y602-1 VENT INLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE Figure 2. Type T205 with Internal Registration Operational Schematics VALVE DISK O-RING STEM SEAL PUSHER POST CONTROL LINE CONNECTION THROAT SEAL TYPE Y602-1 VENT INLET PRESSURE CONTROL SPRING OUTLET PRESSURE ATMOSPHERIC PRESSURE Figure 3.
PAGE 4
Bulletin 74.1:T205 HORIZONTAL PIPELINE VENT POINTED DOWN DOWNSTREAM CONTROL LINE HORIZONTAL PIPELINE Type t205 Type t205M Inlet pressure Outlet pressure Atmospheric pressure DOWNSTREAM CONTROL PRESSURE Figure 4.
PAGE 5
Bulletin 74.1:T205 Table 1. Body Sizes, End Connection Styles and Maximum Allowable Inlet Pressure BODY SIZE In. DN 3/4 or 1 20 or 25 MAXIMUM ALLOWABLE INLET PRESSURE BODY MATERIAL END CONNECTION STYLE(1) psig bar Gray Cast iron NPT 150 10.3 WCC Carbon steel NPT, CL150 RF, CL300 RF or PN 16/25/40 RF 200 13.8 CF8M/CF3M Stainless steel(2) 1. All flanges are welded. Weld-on flange dimension is 14 in. / 356 mm face-to-face. 2.
PAGE 6
Bulletin 74.1:T205 Table 5. Flow Coefficients Orifice Size Type T205 and T205M Flow Coefficients (Wide-Open) In. mm Cg Cv C1 1/8 3.2 12 0.36 1/4 6.4 47 1.40 33.3 33.1 3/8 9.5 101 2.96 34.1 1/2 13 174 5.20 33.4 9/16 14 205 6.20 33.1 Table 6. Correction Factors (For converting Air Flow Rates to Other Gas Flow Rates)(1) Blanket gas Specific gravity Correction factor Natural Gas 0.60 1.291 Nitrogen 0.97 1.015 Dry CO2 1.52 0.811 1.
PAGE 7
Bulletin 74.1:T205 Table 7. Flow Capacities of Type T205 with 3/4 in. / DN 20 Body Size SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 1 in. w.c. / 2.5 mbar OFFSET FROM SETPOINT -1 to 2 in. w.c. / -2.5 to 5.0 mbar 1 to 2.5 in. w.c. / 2.5 to 6.2 mbar Orange 2 in. w.c. / 5.0 mbar 2.5 in. w.c. / 6.2 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red 4 in. w.c. / 10 mbar -1 to 2 in. w.c. / -2.5 to 5.
PAGE 8
Bulletin 74.1:T205 Table 7. Flow Capacities of Type T205 with 3/4 in. / DN 20 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 4 in. w.c. / 10 mbar OFFSET FROM SETPOINT -1 to 2 in. w.c. / -2.5 to 5.0 mbar 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red 7 in. w.c. / 17.4 mbar 8 in. w.c. / 20 mbar -2 to 2 in. w.c. / -5.0 to 5.0 mbar -2 to 2 in. w.c. / -5.0 to 5.0 mbar 7 to 16 in. w.c. / 17 to 40 mbar Unpainted 12 in. w.c.
PAGE 9
Bulletin 74.1:T205 Table 7. Flow Capacities of Type T205 with 3/4 in. / DN 20 Body Size (continued) SPRING RANGE AND COLOR 7 to 16 in. w.c. / 17 to 40 mbar Unpainted OUTLET PRESSURE SETTING 16 in. w.c. / 40 mbar 0.58 psig / 40 mbar OFFSET FROM SETPOINT 20% Gauge 20% Gauge 0.5 to 1.2 psig / 34 to 83 mbar Yellow 1 psi / 69 mbar 1.2 to 2.5 psig / 83 to 172 mbar Green 1.2 psi / 83 mbar 20% Gauge 20% Gauge INLET PRESSURE psig bar 1 0.07 2 Capacities in SCFH / Nm3/h of Air Orifice Size, In.
PAGE 10
Bulletin 74.1:T205 Table 7. Flow Capacities of Type T205 with 3/4 in. / DN 20 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING OFFSET FROM SETPOINT INLET PRESSURE psig 1.2 to 2.5 psig / 83 to 172 mbar Green 2.5 psi / 172 mbar 2.5 psi / 0.17 bar 20% Gauge 20% Gauge 2.5 to 4.5 psig / 0.17 to 0.31 bar Light blue 4.5 psi / 0.31 bar 4.5 psi / 0.31 bar 20% Gauge 20% Gauge 4.5 to 7 psig / 0.31 to 0.48 bar Black 7 psi / 0.
PAGE 11
Bulletin 74.1:T205 Table 8. Flow Capacities of Type T205 with 1 in. / DN 25 Body Size SPRING RANGE AND COLOR OUTLET PRESSURE SETTING OFFSET FROM SETPOINT INLET PRESSURE psig 1 in. w.c. / 2.5 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar 1 to 2.5 in. w.c. / 2.5 to 6.2 mbar Orange 2 in. w.c. / 5.0 mbar 2.5 in. w.c. / 6.2 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red 4 in. w.c. / 10 mbar -1 to 2 in. w.c. / -2.5 to 5.
PAGE 12
Bulletin 74.1:T205 Table 8. Flow Capacities of Type T205 with 1 in. / DN 25 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 4 in. w.c. / 10 mbar OFFSET FROM SETPOINT -1 to 2 in. w.c. / -2.5 to 5.0 mbar 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red 7 in. w.c. / 17.4 mbar 8 in. w.c. / 20 mbar -2 to 2 in. w.c. / -5.0 to 5.0 mbar -2 to 2 in. w.c. / -5.0 to 5.0 mbar 7 to 16 in. w.c. / 17 to 40 mbar Unpainted 12 in. w.c.
PAGE 13
Bulletin 74.1:T205 Table 8. Flow Capacities of Type T205 with 1 in. / DN 25 Body Size (continued) SPRING RANGE AND COLOR 7 to 16 in. w.c. / 17 to 40 mbar Unpainted OUTLET PRESSURE SETTING 16 in. w.c. / 40 mbar 0.58 psig / 40 mbar OFFSET FROM SETPOINT 20% Gauge 20% Gauge INLET PRESSURE Capacities in SCFH / Nm3/h of Air Orifice Size, In. / mm 1/8 / 3.2 1/4 / 6.4 3/8 / 9.5 1/2 / 13 9/16 / 14 psig bar SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH 1 0.07 73 1.96 230 6.16 240 6.43 423 11.
PAGE 14
Bulletin 74.1:T205 Table 8. Flow Capacities of Type T205 with 1 in. / DN 25 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING OFFSET FROM SETPOINT INLET PRESSURE psig 1.2 to 2.5 psig / 83 to 172 mbar Green 2.5 psi / 172 mbar 2.5 psi / 0.17 bar 20% Gauge 20% Gauge 2.5 to 4.5 psig / 0.17 to 0.31 bar Light blue 4.5 psi / 0.31 bar 4.5 psi / 0.31 bar 20% Gauge 20% Gauge 4.5 to 7 psig / 0.31 to 0.48 bar Black 7 psi / 0.
PAGE 15
Bulletin 74.1:T205 Table 9. Flow Capacities of Type T205M with 3/4 in. / DN 20 Body Size SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 1 in. w.c. / 2.5 mbar OFFSET FROM SETPOINT -1 to 2 in. w.c. / -2.5 to 5.0 mbar 1 to 2.5 in. w.c. / 2.5 to 6.2 mbar Orange 2 in. w.c. / 5.0 mbar 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red 2.5 in. w.c. / 6.2 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar INLET PRESSURE Capacities in SCFH / Nm3/h of Air Orifice Size, In. / mm 1/8 / 3.
PAGE 16
Bulletin 74.1:T205 Table 9. Flow Capacities of Type T205M with 3/4 in. / DN 20 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 4 in. w.c. / 10 mbar OFFSET FROM SETPOINT -1 to 2 in. w.c. / -2.5 to 5.0 mbar 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red 7 in. w.c. / 17.4 mbar 8 in. w.c. / 20 mbar -2 to 2 in. w.c. / -5.0 to 5.0 mbar -2 to 2 in. w.c. / -5.0 to 5.0 mbar 7 to 16 in. w.c. / 17 to 40 mbar Unpainted 12 in. w.c.
PAGE 17
Bulletin 74.1:T205 Table 9. Flow Capacities of Type T205M with 3/4 in. / DN 20 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING OFFSET FROM SETPOINT INLET PRESSURE psig 12 in. w.c. / 30 mbar 20% Gauge 7 to 16 in. w.c. / 17 to 40 mbar Unpainted 16 in. w.c. / 40 mbar 0.58 psig / 40 mbar 20% Gauge 20% Gauge 0.5 to 1.2 psig / 34 to 83 mbar Yellow 1 psi / 69 mbar 1.2 to 2.5 psig / 83 to 172 mbar Green 1.
PAGE 18
Bulletin 74.1:T205 Table 9. Flow Capacities of Type T205M with 3/4 in. / DN 20 Body Size (continued) SPRING RANGE AND COLOR 1.2 to 2.5 psig / 83 to 172 mbar Green OUTLET PRESSURE SETTING 2.5 psi / 172 mbar 2.5 psi / 0.17 bar OFFSET FROM SETPOINT 20% Gauge 20% Gauge 2.5 to 4.5 psig / 0.17 to 0.31 bar Light blue 4.5 psi / 0.31 bar 4.5 psi / 0.31 bar 20% Gauge 20% Gauge 4.5 to 7 psig / 0.31 to 0.48 bar Black 7 psi / 0.
PAGE 19
Bulletin 74.1:T205 Table 10. Flow Capacities of Type T205M with 1 in. / DN 25 Body Size SPRING RANGE AND COLOR OUTLET PRESSURE SETTING OFFSET FROM SETPOINT INLET PRESSURE psig 1 in. w.c. / 2.5 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar 1 to 2.5 in. w.c. / 2.5 to 6.2 mbar Orange 2 in. w.c. / 5.0 mbar 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red 2.5 in. w.c. / 6.2 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar bar Capacities in SCFH / Nm3/h of Air Orifice Size, In.
PAGE 20
Bulletin 74.1:T205 Table 10. Flow Capacities of Type T205M with 1 in. / DN 25 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 4 in. w.c. / 10 mbar OFFSET FROM SETPOINT -1 to 2 in. w.c. / -2.5 to 5.0 mbar 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red 7 in. w.c. / 17.4 mbar 8 in. w.c. / 20 mbar -2 to 2 in. w.c. / -5.0 to 5.0 mbar -2 to 2 in. w.c. / -5.0 to 5.0 mbar 7 to 16 in. w.c. / 17 to 40 mbar Unpainted 12 in. w.c.
PAGE 21
Bulletin 74.1:T205 Table 10. Flow Capacities of Type T205M with 1 in. / DN 25 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING OFFSET FROM SETPOINT INLET PRESSURE psig 12 in. w.c. / 30 mbar 20% Gauge 7 to 16 in. w.c. / 17 to 40 mbar Unpainted 16 in. w.c. / 40 mbar 0.58 psig / 40 mbar 20% Gauge 20% Gauge 0.5 to 1.2 psig / 34 to 83 mbar Yellow 1 psi / 69 mbar 1.2 to 2.5 psig / 83 to 172 mbar Green 1.
PAGE 22
Bulletin 74.1:T205 Table 10. Flow Capacities of Type T205M with 1 in. / DN 25 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING OFFSET FROM SETPOINT INLET PRESSURE psig 1.2 to 2.5 psig / 83 to 172 mbar Green 2.5 psi / 172 mbar 2.5 psi / 0.17 bar 20% Gauge 20% Gauge 2.5 to 4.5 psig / 0.17 to 0.31 bar Light blue 4.5 psi / 0.31 bar 4.5 psi / 0.31 bar 20% Gauge 20% Gauge 4.5 to 7 psig / 0.31 to 0.48 bar Black 7 psi / 0.
PAGE 23
Bulletin 74.1:T205 Table 11. Cv Coefficient of T205 Series with 3/4 in. / DN 20 Body Size SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 1 in. w.c. / 2.5 mbar OFFSET FROM SETPOINT -1 to 2 in. w.c. / -2.5 to 5.0 mbar 1 to 2.5 in. w.c. / 2.5 to 6.2 mbar Orange 2 in. w.c. / 5.0 mbar 2.5 in. w.c. / 6.2 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red 4 in. w.c. / 10 mbar -1 to 2 in. w.c. / -2.5 to 5.
PAGE 24
Bulletin 74.1:T205 Table 11. Cv Coefficient of T205 Series with 3/4 in. / DN 20 Body Size (continued) SPRING RANGE AND COLOR 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red OUTLET PRESSURE SETTING 7 in. w.c. / 17 mbar 8 in. w.c. / 20 mbar 7 to 16 in. w.c. / 17 to 40 mbar Unpainted 12 in. w.c. / 30 mbar 16 in. w.c. / 40 mbar OFFSET FROM SETPOINT -2 to 2 in. w.c. / -5.0 to 5.0 mbar -2 to 2 in. w.c. / -5.0 to 5.
PAGE 25
Bulletin 74.1:T205 Table 11. Cv Coefficient of T205 Series with 3/4 in. / DN 20 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 0.58 psig / 40 mbar OFFSET FROM SETPOINT 20% Gauge 0.5 to 1.2 psig / 34 to 83 mbar Yellow 1 psi / 69 mbar 20% Gauge 1.2 psi / 83 mbar 20% Gauge 2.5 psi / 0.17 bar 20% Gauge 2.5 psi / 0.17 bar 20% Gauge 4.5 psi / 0.31 bar 20% Gauge 1.2 to 2.5 psig / 83 to 172 mbar Green 2.5 to 4.5 psig / 0.17 to 0.
PAGE 26
Bulletin 74.1:T205 Table 11. Cv Coefficient of T205 Series with 3/4 in. / DN 20 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING OFFSET FROM SETPOINT 4.5 psi / 0.31 bar 20% Gauge 7 psi / 0.48 bar 20% Gauge 4.5 to 7 psig / 0.31 to 0.48 bar Black INLET PRESSURE psig bar 9 12 30 60 80 100 125 150 175 200 9 12 30 60 80 100 125 150 175 200 0.62 0.83 2.1 4.1 5.5 6.9 8.6 10.3 12.1 13.8 0.62 0.83 2.1 4.1 5.5 6.9 8.6 10.3 12.1 13.8 Cv COEFFICIENT Orifice Size, In. / mm 1/8 / 3.
PAGE 27
Bulletin 74.1:T205 Table 12. Cv Coefficient of T205 Series with 1 in. / DN 25 Body Size SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 2.5 in. w.c. / 6.2 mbar 2.5 to 7 in. w.c. / 6.2 to 17 mbar Red 4 in. w.c. / 10 mbar 7 in. w.c. / 17 mbar 7 to 16 in. w.c. / 17 to 40 mbar Unpainted 8 in. w.c. / 20 mbar OFFSET FROM SETPOINT -1 to 2 in. w.c. / -2.5 to 5.0 mbar -1 to 2 in. w.c. / -2.5 to 5.0 mbar -2 to 2 in. w.c. / -5.0 to 5.0 mbar -2 to 2 in. w.c. / -5.0 to 5.
PAGE 28
Bulletin 74.1:T205 Table 12. Cv Coefficient of T205 Series with 1 in. / DN 25 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 12 in. w.c. / 30 mbar OFFSET FROM SETPOINT 20% Gauge 7 to 16 in. w.c. / 17 to 40 mbar Unpainted 16 in. w.c. / 40 mbar 0.58 psi / 40 mbar 20% Gauge 20% Gauge 0.5 to 1.2 psig / 34 to 83 mbar Yellow 1 psi / 69 mbar 20% Gauge INLET PRESSURE Cv COEFFICIENT Orifice Size, In. / mm 1/8 / 3.2 3/8 / 9.
PAGE 29
Bulletin 74.1:T205 Table 12. Cv Coefficient of T205 Series with 1 in. / DN 25 Body Size (continued) SPRING RANGE AND COLOR OUTLET PRESSURE SETTING 1.2 psi / 83 mbar OFFSET FROM SETPOINT 20% Gauge 1.2 to 2.5 psig / 83 to 172 mbar Green 2.5 psi / 0.17 bar 2.5 psi / 0.17 bar 20% Gauge 20% Gauge 2.5 to 4.5 psig / 0.17 to 0.31 bar Light blue 4.5 psi / 0.31 bar 4.5 psi / 0.31 bar 20% Gauge 20% Gauge 4.5 to 7 psig / 0.31 to 0.48 bar Black 7 psi / 0.
PAGE 30
Bulletin 74.1:T205 8.38 / 212.9 1/4 NPT VENT NPT 5.58 / 141.6 FLANGED 4.12 / 104.6 2.25 / 57.2 1/2 NPT CONTROL LINE CONNECTION 6.18 / 157 1.59 / 40.4 10.37 / 263.4 T205 SERIES WITH NPT END CONNECTION 14 / 355.6 8.07 / 205 MAXIMUM 7.19 / 182.6 SPRING ADJUSTMENT ASSEMBLY OPTION T205 SERIES WITH FLANGED END CONNECTION IN. / mm Figure 6.
PAGE 31
Bulletin 74.1:T205 Ordering Information When ordering, complete the ordering guide on this page. Refer to the Specifications section on page 2. Review the description to the right of each specification and the information in each referenced table or figure. Specify your choice whenever a selection is offered. Ordering Guide Type (Select One) T205, Internal pressure registration T205M, External pressure registration Body Size (Select One) 3/4 in. / DN 20*** 1 in.
PAGE 32
Bulletin 74.1:T205 Ordering Guide (continued) Specification Worksheet Application: Specific Use Line Size Fluid Type Specific Gravity Temperature Does the Application Require Overpressure Protection? Yes No Regulators Quick Order Guide *** ** * Readily Available for Shipment Allow Additional Time for Shipment Special Order, Constructed from Non-Stocked Parts. Consult your local Sales Office for Availability.