Instruction manual

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Type MR105

D103246X012

December 2014

Instruction Manual

Form 5874

www.fisherregulators.com

Type MR105 Direct-Operated Pressure

Reducing Regulators

WARNING

Failure to follow these instructions or

to properly install and maintain this

equipment could result in an explosion,



causing property damage and personal

injury or death.

Fisher

regulators must be installed,

operated and maintained in

accordance with federal, state and

local codes, rules and regulations

and Emerson Process Management

Regulator Technologies, Inc.

(Emerson™) instructions.

If the regulator vents gas or a leak

develops in the system, service to the unit

may be required. Failure to correct trouble

could result in a hazardous condition.

Installation, operation and maintenance



personnel may result in improper

Figure 1. Type MR105 Direct-Operated Pressure

Reducing Regulators

adjustment and unsafe operation. Either

condition may result in equipment damage



personnel when installing, operating and

maintaining the Type MR105 regulator.

TYPE MR105 WITH

HIGH-PRESSURE ACTUATOR

TYPE MR105 WITH

LOW-PRESSURE ACTUATOR

Contents

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

Specifications .............................................................. 2

Principle of Operation .................................................. 3

Installation ................................................................... 4

Overpressure Protection.............................................. 8

Startup ......................................................................... 8

Adjustment...................................................................9

Shutdown.....................................................................9

Maintenance .............................................................. 10

Parts List....................................................................16

P1204

P1205

Summary of content (24 pages)

PAGE 1
Type MR105 Instruction Manual Form 5874 December 2014 Type MR105 Direct-Operated Pressure Reducing Regulators Contents Introduction .................................................................. 2 Specifications .............................................................. 2 Principle of Operation .................................................. 3 Installation ................................................................... 4 Overpressure Protection..............................................
PAGE 2
Type MR105 Specifications The Specifications section on this page provides the ratings and other specifications for the Type MR105. The following information is stamped on the nameplate fastened on the regulator at the factory: type; body size; maximum inlet, outlet and differential pressure; maximum pressure above setpoint; maximum casing pressure; maximum temperature; spring range; cage type; and trim and diaphragm material.
PAGE 3
Type MR105 Table 1.
PAGE 4
Type MR105 VALVE SPRING VALVE PLUG CAGE seat ring TYPE Y602-12 VENT 1/2 NPT CONTROL LINE CONNECTION actuator stem DIAPHRAGM TYPE Y602-12 VENT POINTED DOWN OR 1/2 NPT PRESSURE-LOADED SPRING CASE VENT ACTUATOR CONTROL SPRING M1178 INLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE Figure 2. Type MR105 with Low-Pressure Actuator Operational Schematic downstream as the regulator opens in response to the decreased pressure underneath the diaphragm.
PAGE 5
Type MR105 VALVE SPRING VALVE PLUG CAGE seat ring TYPE Y602-12 VENT actuator stem 1/2 NPT CONTROL LINE CONNECTION ACTUATOR DIAPHRAGM TYPE Y602-12 VENT POINTED DOWN OR 1/2 NPT PRESSURE-LOADED SPRING CASE VENT CONTROL SPRING M1181 INLET PRESSURE OUTLET PRESSURE ATMOSPHERIC PRESSURE Figure 3. Type MR105 with High-Pressure Actuator Operational Schematic Table 3.
PAGE 6
Type MR105 Note To avoid premature wear of internal parts, it is recommended that the actuator be oriented up or down in liquid service as shown in Figures 2 and 3. General Installation Instructions Vertical installation with the actuator installed directly above or below the main valve is recommended but for optimal performance the actuator should be installed below the main valve.
PAGE 7
Type MR105 Table 4. Maximum Differential Pressure NPS 1 2 3 4 1 2 3 4 Low Pressure High Pressure MAXIMUM DIFFERENTIAL PRESSURE BODY SIZE ACTUATOR TYPE Gas Service (Linear Cage) DN 25 50 80 100 25 50 80 100 psid bar d 400 or maximum inlet pressure, whichever is lower 27.6 or maximum inlet pressure, whichever is lower 400 or maximum inlet pressure, whichever is lower 27.
PAGE 8
Type MR105 ! Warning Personal injury, equipment damage or leakage due to escaping fluid may result if the bonnet (key 61, Low-Pressure Actuator) or lower diaphragm casing (key 62, High-Pressure Actuator) is backed off or loosened when installing control line. Downstream Control Line Installation The Type MR105 regulator requires a downstream control line for proper pressure control.
PAGE 9
Type MR105 1. Check that proper installation is completed and downstream equipment has been properly adjusted. 2. Make sure all block and vent valves are closed. 3. Slowly open the valves in the following order: a. Loading supply and control line valve(s), if used b. Inlet shut-off valve c. Outlet shut-off valve 1/4 NPT drain valve (KEY 82) 4. If the regulator has the bleed valve option, slowly open valve to allow air to escape from lower casing.
PAGE 10
Type MR105 and damage, make certain the drain valve (if used) is properly closed after bleeding process fluid. 1. Isolate the regulator from the system in steps 2 and 3. 2. Close the upstream shut-off valve to the regulator inlet. 3. Close the downstream shut-off valve to the regulator outlet. ! Warning To avoid personal injury or damage of internal parts from a pressure-loaded actuator, carefully vent the regulator spring case pressure prior to outlet pressure. 4.
PAGE 11
Type MR105 Table 6.
PAGE 12
Type MR105 1. Remove the lower indicator fitting (key 5) and attached parts. Proceed to step 5 if only maintenance on the indicator fitting or attached parts is performed. 2. Loosen the hex nuts (key 29) and stud bolts (key 3) and remove the body flange (key 2) from the valve body (key 1). 3. Use the valve body (key 1) as a holding fixture if desired. Flip the body flange (key 2) over and anchor it on the valve body. 4.
PAGE 13
Type MR105 Actuator Maintenance Perform this procedure if it is desired to inspect or replace the diaphragm or other internal parts or if it is desired to change the outlet pressure range of the regulator by changing the control spring. ! Warning To avoid possible personal injury from spring or pressure-loaded actuator, make certain the adjusting screw is completely backed off or the spring case pressure is vented prior to disassembly.
PAGE 14
Type MR105 alignment. Do not loosen the bonnet thread to align the pipe holes. Always tighten the bonnet to make alignment for the control line. Note Position the bonnet (key 61) such that the vent (key 26) is facing valve body (key 1) inlet, the lube fitting (key 44) is facing body outlet end and the 1/2 NPT control line connection (key 30) is located 90° from the valve body ends. For pressure-loaded actuator option skip steps 20 and 21 and proceed to step 22 with upper casing welding assembly (key 87).
PAGE 15
Type MR105 ! Warning Personal injury, equipment damage or leakage due to escaping fluid may result if adjusting screw (key 73) and jam nut (key 72) are not installed properly. Also, main spring (key 68) may go solid resulting in the regulator not locking up if jam nut is not installed and adjusting screw is adjusted completely down. 26. Lubricate the adjusting screw (key 73) and thread on the jam nut (key 72). If pressure-loaded actuator is used, install the sealing washer (key 71).
PAGE 16
Type MR105 16. Place the lower spring seat (key 54) and Belleville spring washer (key 49) over the actuator stem (key 40) and on top of the diaphragm (key 56). The raised inner diameter of the spring washer should be pointing toward the threaded end of the actuator stem. 17. Lubricate the threads of the actuator stem (key 40) and thread the two jam nuts (key 48) onto it. Using wrench flats, hold the stem and torque the two jam nuts individually. Tighten to a torque of 12 to 14 ft-lbs / 16 to 19 N•m. 18.
PAGE 17
Type MR105 ! Warning 73 72 Use only genuine Fisher® replacement parts. Components that are not supplied by Emerson™ should not, under any circumstances, be used in any Fisher regulator, because they will void your warranty, might adversely affect the performance of the valve and could give rise to personal injury and property damage.
PAGE 18
Type MR105 Key 1, Type MR105 Valve Bodies Material End Connection NPT CL125 FF CL250 RF NPT CL150 RF CL300 RF CL600 RF PN 16/25/40 RF PN 16 RF NPT CL150 RF CL300 RF CL600 RF PN 16/25/40 RF PN 16 RF CL150 RF CL300 RF NPT CL150 RF CL300 RF CL600 RF Cast Iron WCC Steel CF8M Stainless Steel (NACE) CF3M Stainless Steel (NACE) WCC Steel (NACE) Key Description NPS 1 / DN 25 34B7611X012 34B8630X012 37B5950X012 37B5946X012 37B5947X012 37B5948X012 37B5949X012 GE05956X012 ----------37B5946X032 37B5947X032 37
PAGE 19
Type MR105 Key Description 15* Upper Seal (NACE) (continued) Ethylene Propylene (EPDM) NPS 1 / DN 25 NPS 2 / DN 50 NPS 3 / DN 80 NPS 4 / DN 100 16* Valve Plug 416 Stainless Steel NPS 1 / DN 25 NPS 2 / DN 50 NPS 3 / DN 80 NPS 4 / DN 100 S20910 Stainless Steel (NACE) NPS 1 / DN 25 316 Stainless Steel (NACE) NPS 2 / DN 50 NPS 3 / DN 80 NPS 4 / DN 100 316L Stainless Steel (NACE) NPS 2 / DN 50 NPS 3 / DN 80 NPS 4 / D
PAGE 20
Type MR105 Key Description Part Number 52 Lower Spring Guide, Zinc-Plated Steel (NACE) (Low-Pressure Actuator only) GE39171X012 53 Lower Diaphragm Head 17-4 Stainless Steel (NACE) Low-Pressure Actuator GE39137X012 High-Pressure Actuator GG02195X012 54 Lower Spring Seat, Zinc-Plated Steel (NACE)(1) (High-Pressure Actuator only) GE39174X012 55 Diaphragm Plate, Cast Iron (NACE)(1) (Low-Pressure Actuator only) GG02994X012 56* Diaphragm (NACE) Low-Pressure Actuator
PAGE 21
Type MR105 L1 67 57 L3 69 71 52 L1 L1 64 68 66 L1 76 65 S 26 63 SEE DETAIL V 55 56 53 L1 58 S 62 L1 51 SEE DETAIL X 65 L1 84 SEE DETAIL Z 13 L1 12 L1 11 L1 L1 S 61 L1 40 L1 17 4 16 9 3 29 SEE DETAIL Y L1 L1 Type MR105 with Low-Pressure Actuator Assembly GE38435 APPLY lubricant or sealant(1): L1 = multi-purpose ptfe lubricant l3 = anti-seize compound s = multi-purpose ptfe thread sealanT NOTE: KEYS 64 AND 71 ARE USED ONLY FOR PRESSURE-LOADED ACTUATORS. 1.
PAGE 22
Type MR105 71 54 64 L1 63 58 L1 56 L1 57 L1 62 S 51 53 NOTE: KEYS 64 AND 71 ARE USED ONLY FOR PRESSURE-LOADED ACTUATORS. Type MR105 with High-Pressure Actuator Assembly 48 L1 46 L1 60 L1 47 49 Detail v Detail X GE38435 48 APPLY lubricant or sealant(1): L1 = multi-purpose ptfe lubricant s = multi-purpose ptfe thread sealanT 1. Lubricants and sealants must be selected such that they meet the temperature requirements. Figure 6.
PAGE 23
Type MR105 15 16 L1 L1 20 2 L1 47 L1 46 L1 45 14 Detail Z Detail Y L1 36 7 L1 21 L1 27 L1 Detail W no travel indicator 23 28 10 6 5 L1 21 L1 37 L1 35 SEE DETAIL W 8 22 18 19 Type MR105 with optional travel indicator GE38435 APPLY lubricant(1): L1 = multi-purpose ptfe lubricant 1. Lubricants and sealants must be selected such that they meet the temperature requirements. Figure 6.
PAGE 24
Type MR105 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 75070 USA Tel: +1 800 558 5853 Outside U.S. +1 972 548 3574 USA - Headquarters McKinney, Texas 75070 USA Tel: +1 800 558 5853 Outside U.S.