Data Sheet

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Bulletin 71.2:92S

D100621X012

December 2011

www. sherregulators.com

Type 92S Pilot-Operated Steam Regulator

Introduction

The Type 92S steam regulator is piston actuated for

high cycle steam service which includes a Type 6492L,

6492H, or 6492HT pilot (see Figure 1). These pilots

have bellows sealed stems to eliminate stem guide

friction. The valve and pilot use lapped seating surfaces

that have been proven to minimize seat leakage.

Features

• Good Shutoff for Low Downstream Build-up—

Type 92S main valve and Types 6492H, 6492L, and

6492HT pilots are machine-lapped seating surfaces

that have been time-proven to minimize seat leakage

when the downstream demand is zero and the

regulator is shutoff.

• Resistance to Piping Stresses—Steel

constructions are available to help resist the piping

stresses commonly encountered in steam applications.

• Ease of Installation—Compact construction

reduces installation space requirements. Supply of

pressure to the pilot is supplied from the inlet side

of the main valve through factory piped tubing;

with a standard pilot, this means no separate pilot

supply pressure is required.

• Increased Sensitivity to Downstream Pressure

Changes—Friction-reducing bellows seal on

the pilot stem and large pilot diaphragm areas

yield good sensitivity.

• Ease of Pilot Maintenance—Pilot valve plug and

seat can be removed for inspection of maintenance

without disassembling piping connections and

without removing the diaphragm. Pilot inlet screen

(Figure 2) is easily removed with the seating

parts for inspection and cleaning. Diaphragm can

be removed without disturbing the seating parts.

• Noise Reduction Capability Without Decrease

in Capacity—A noise attenuation trim is

available for use with NPS 2 / DN 50 and larger

main valve sizes to provide an economical yet

full- ow means for the reduction of noise from high

velocity steam  ow. Further noise reduction of

the system can be achieved by the use of a heavier

piping schedule and/or thermal insulation of the

attached piping.

W4086_3

1 NPT STEEL

MAIN VALVE WITH TYPE 6492H OR 6492HT PILOT

W4088_1

NPS 3 / DN 80 FLANGED CAST IRON

MAIN VALVE WITH TYPE 6492L PILOT

Figure 1. Type 92S Pilot-Operated Steam Regulator

Summary of content (16 pages)

PAGE 1
Bulletin 71.2:92S December 2011 Type 92S Pilot-Operated Steam Regulator Introduction The Type 92S steam regulator is piston actuated for high cycle steam service which includes a Type 6492L, 6492H, or 6492HT pilot (see Figure 1). These pilots have bellows sealed stems to eliminate stem guide friction. The valve and pilot use lapped seating surfaces that have been proven to minimize seat leakage.
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Bulletin 71.
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Bulletin 71.
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Bulletin 71.2:92S Table 3. Flow and Sizing Coefficients(1) BODY SIZE NPS DN ORIFICE SIZE Inches mm REGULATING Cs WIDE-OPEN Cs FOR RELIEF SIZING 1 25 7/8 22 16 17.5 1-1/2 40 1-1/8 29 30 33 2 50 1-29/64 37 48 52 2-1/2 65 1-5/8 41 74 78 3 80 2-1/16 52 100 110 4 100 2-3/8 60 140 145 6x4 150 x 100 2-3/8 60 150 155 C1 Km IEC SIZE COEFFICIENTS XT FD FL 0.51 0.62 0.47 0.79 0.48 34 0.73 0.71 0.48 0.47 0.46 0.84 0.46 1.
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Type 92S August 2007 Bulletin 71.
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Bulletin 71.2:92S T TYPE 6492H PILOT TYPE 6492H PILOT TYPE 92S MAIN VALVE TYPE 92S MAIN VALVE TYPE 6492HM SAFETY OVERRIDE PILOT E0402 Figure 3.
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Bulletin 71.2:92S Table 4. Safety Pilot Outlet (Control) Pressure Ranges TYPE 6492HM 6492HTM SPRING RANGE PART NUMBER MINIMUM PRESSURE AT WHICH MONITORING PILOT CAN BE SET Yellow 1E395627022 5 psig / 0.35 bar over normal distribution pressure Green 1D7455T0012 SPRING COLOR psig bar 10 to 30 0.69 to 2.1 25 to 75 1.7 to 5.2 Black 70 to 150 4.8 to 10.3 15 to 100 1.0 to 6.9 80 to 250 5.5 to 17.2 TYPE 92S MAIN VALVE Unpainted 1E395727192 14B9943X012 10 psig / 0.
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Bulletin 71.2:92S Type 92S Pilot-Operated Pressure Reducing Regulator with Safety Override Pilot A Type 6492HM or 6492HTM safety override pilot is available for the Type 92S. The Type 6492H pilot is used in a series installation with the Type 6492HM or 6492HTM safety override pilot installed on the upstream regulator.
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Bulletin 71.2:92S TYPE 6492H PILOT TYPE 92S MAIN VALVE BOTTOM VIEW TYPE 6492HM SAFETY OVERRIDE PILOT TYPE 92S MAIN VALVE TYPE 6492H PILOT SIDE VIEW Figure 6. NPS 2-1/2, 3, and 4 / DN 65, 80, and 100 Piping Schematics Noise level values for a regulator equipped either with or without a noise attenuation trim are presented in Table 6. These noise levels are determined at a point 39-inches / 991 mm downstream of the regulator outlet and 39-inches / 991 mm from the piping surface.
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Bulletin 71.2:92S AIR LOADING REGULATOR BLEED RESTRICTION (REQUIRED ONLY IF THE LOADING REGULATOR DOES NOT HAVE INTERNAL RELIEF) NEEDLE VALVE CONTROL LINE CONNECTION CONTROL LINE SHUTOFF VALVE STRAINER BLOCK VALVE BLOCK VALVES VENT VALVE BYPASS LINE 16A7958-B 16A1547-A A3334 Figure 7.
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Bulletin 71.2:92S Table 5. Flow Capacities in Pounds per Hour / kg/h of Saturated Steam OUTLET PRESSURE SETTING(1) psig 5 10 15 20 30 40 50 60 80 100 INLET PILOT TYPE PRESSURE NUMBER bar psig bar MAIN VALVE BODY SIZE, NPS / DN 1 / 25 1-1/2 / 40 2 / 50 3 / 80 4 / 100 6 x 4 / 150 x 100 DROOP lbs/h kg/h lbs/h kg/h lbs/h lbs/h kg/h lbs/h kg/h lbs/h kg/h lbs/h kg/h 25 30 50 1.7 2.1 3.
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Bulletin 71.2:92S Table 5. Flow Capacities in Pounds per Hour / kg/h of Saturated Steam (continued) OUTLET PRESSURE SETTING(1) psig bar INLET PILOT PRESSURE TYPE NUMBER psig bar 125 8.6 6492H, 6492HT 140 150 200 250 300 150 10.
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Bulletin 71.2:92S Table 6.
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Bulletin 71.2:92S B TRIM REMOVAL CLEARANCE R S 1/4 NPT CONTROL LINE CONNECTION ON BACKSIDE E 17A8559-A B1904 A/2 A NPS 1, 1-1/2, OR 2 / DN 25, 40, OR 50 MAIN VALVE BODY R S 1/4 NPT CONTROL LINE CONNECTION E A/2 17A8560-A B1904 B A TRIM REMOVAL CLEARANCE NPS 2-1/2, 3, 4, OR 6 x 4 / DN 65, 80, 100, OR 150 x 100 MAIN VALVE BODY Figure 9. Dimensions Table 7.
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Bulletin 71.2:92S Ordering Guide Body Size (Select One) NPS 1 / DN 25** NPS 1-1/2 / DN 40** NPS 2 / DN 50*** NPS 2-1/2 / DN 65* NPS 3 / DN 80** NPS 4 / DN 100** NPS 6 x 4 / DN 150 x 100 (WCC, Steel, or Stainless steel with CL300 RF and CL600 RF only)* Body and Body Flange Material and End Connection Style (Select One) Cast Iron NPT*** CL125 FF** CL250 RF** Outlet Pressure Range (Select One) Type 6492L Pilot 2 to 6 psig / 0.14 to 0.41 bar, Yellow*** 5 to 15 psig / 0.35 to 1.
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Bulletin 71.2:92S 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.