Emerson Fisher MR98LD User manual

MR98 Series

D103588X012

Instruction Manual

January 2015

!!!"#$%&'((')*+,-.(%"/.0

123456'($'%57,/89('%%*('52')*+,-.(%:52'+$'#5

,;<5=$##'(';-$,+52'+$'#5>,+?'%

Figure 1. Typical MR98 Series Backpressure Regulators, Relief and Differential Relief Valves

@ABC51234D

@ABC51234E

@ABC51234D

P1757

P1753

MR98 Series









F?,$+,G+'5H.;%-(*/-$.;%

@I9'51234DJ





@I9'51234EJ5





@I9'51234EEJ





@I9'51234D=J





@I9'51234E=J





@I9'51234EE=J









KLM5NB@J

KLO5$;"5L5=N5KPJ

QLM5,;<5K5$;"5L5=N5OR5,;<5OPJ



KSKLO5,;<5O5$;"5L5=N5MR5,;<5PRJ



1,T$0*0569($;)5H,%'5D.,<$;)5B('%%*('5#.(55

@I9'%51234D=:51234E=5,;<51234EE=55

U69($;)56'--$;)5B+*%5D.,<$;)5B('%%*('VUKVUOV

@I9'51234D=569($;)5H,%'5

Gray Cast Iron:

Steel or Stainless steel:

@I9'51234E=569($;)5H,%'5

Gray Cast Iron:

Steel or Stainless steel:

@I9'51234EE=569($;)5H,%'5

Steel or Stainless steel:

1,T$0*05W;+'-5,;<5X*-+'-5B('%%*('52,-$;)









,;<51,-'($,+%UKVUOV





7X=A56WYC H?H)HK

W;" =N

 - - - -   

 15  120 

   250 

   780 



7X=A56WYC Z@[<[D\0

W;" =N

 - - - -    

 15    

     

     

6'-5B('%%*('52,;)'%

See Table 3

B('%%*('52')$%-(,-$.;





1'-,+56',-%J5Class IV

 Class IV

C+,%-.0'(56',-%J Class VI or better

@'09'(,-*('5H,9,G$+$-$'%5#.(5C+,%-.0'(5B,(-%UKVUQV

See Table 5

@'09'(,-*('5H,9,G$+$-$'%5#.(51'-,+5B,(-%UKVUQV

See Table 5

F99(.T$0,-'5]'$)&-%

1234E56'($'%J

1/4 NPT: 

1/2 in. / DN 15: 

3/4 and 1 in. / DN 20 and 25: 

1-1/2 and 2 in. / DN 40 and 50: 

1234D56'($'%J

1/4 NPT: 

1/2 in. / DN 15: 

3/4 and 1 in. / DN 20 and 25: 







MR98 Series

]F2NWN^

[,$+*('5-.5#.++.!5-&'%'5$;%-(*/-$.;%5.(5

-.59(.9'(+I5$;%-,++5,;<50,$;-,$;5-&$%5

'`*$90';-5/.*+<5('%*+-5$;5,;5'T9+.%$.;:5



/,*%$;)59(.9'(-I5<,0,)'5,;<59'(%.;,+5

$;a*(I5.(5<',-&"

[$%&'(b5G,/89('%%*('5(')*+,-.(%:5('+$'#5

,;<5<$##'(';-$,+5('+$'#5?,+?'%50*%-5G'5

$;%-,++'<:5.9'(,-'<5,;<50,$;-,$;'<5

$;5,//.(<,;/'5!$-&5#'<'(,+:5%-,-'5,;<5

+./,+5/.<'%:5(*+'%5,;<5(')*+,-$.;%5

,;<5C0'(%.;5B(./'%%51,;,)'0';-5

2')*+,-.(5@'/&;.+.)$'%:5W;/"55

UC0'(%.;cV5$;%-(*/-$.;%"

W#5,5+',85<'?'+.9%5.(5$#5-&'5.*-+'-5

/.;-$;*,++I5?';-%5),%:5%'(?$/'5-.5-&'5

*;$-50,I5G'5('`*$('<"5[,$+*('5-.5/.(('/-5





$;%-,++5.(5%'(?$/'5-&'5*;$-"

W;%-,++,-$.;:5.9'(,-$.;5,;<50,$;-';,;/'5



9'(%.;50,I5('%*+-5$;5$09(.9'(5,<a*%-0';-5

,;<5*;%,#'5.9'(,-$.;"5C$-&'(5/.;<$-$.;5

0,I5('%*+-5$;5'`*$90';-5<,0,)'5.(5



!&';5$;%-,++$;):5.9'(,-$;)5,;<50,$;-,$;$;)5

-&'5123456'($'%5G,/89('%%*('5(')*+,-.(%:5

('+$'#5,;<5<$##'(';-$,+5('+$'#5?,+?'%"

W;-(.<*/-$.;

6/.9'5.#5-&'51,;*,+













B(.<*/-5='%/($9-$.;











@I9'51234D







@I9'51234E







@I9'51234EE







@I9'51234D=





@I9'51234E=







@I9'51234EE=







MR98 Series



6B2WN^

1C@FD5=WFBE2F^16 1C@FD5=WFBE2F^1

^F6\C@ ^F6\C@

[X25@ABC51234E5]W@E5@]X51C@FD5=WFBE2F^165

UFD6X5@ABWHFD5X[5@ABC651234EE5FN=51234D5CZHCB@5[X25

9%$5L5R"K5@X5R"M45G,(52FN^CV

9%$5L5R"KM5@X5R"M45G,(52FN^CV5

]W@E5XNC51C@FD5=WFBE2F^1

Figure 2. MR98 Series Operational Schematics

HXN@2XD56B2WN^

=WFBE2F^1

X2W[WHC

>FD>C5BDd^

>CN@

F=ed6@WN^56H2C]

HXN@2XD5DWNC5@FB

@ABC51234E5]W@E5WN@C2NFD5

B2C66d2C52C^W6@2F@WXN

7FH\5>WC]5X[55

KLO5WN"5L5=N5KP5@ABC51234E55

]W@E5CZ@C2NFD55

B2C66d2C52C^W6@2F@WXN

6W=C5FN=5WN@C2NFD5>WC]5X[5

QLM5@X5O5WN"5L5=N5OR5@X5PR55

@ABC51234E5]W@E5CZ@C2NFD55

B2C66d2C52C^W6@2F@WXN

UFD6X5@ABWHFD5X[5@ABC51234D:55

KLO5@X5O5WN"5L5=N5KP5@X5PR57X=WC6V

INLET PRESSURE

OUTLET PRESSURE

ATMOSPHERIC PRESSURE

MR98 Series

























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







[X25@ABC651234E=:51234EE=5FN=51234D=5]W@E5@]X51C@FD5

=WFBE2F^16:5F66C17DC5=WFBE2F^15^F6\C@65dN=C25FN=55

F7X>C5@EC51C@FD5=WFBE2F^165F656EX]N5F7X>C

6B2WN^ 1C@FD5=WFBE2F^16

^F6\C@

Figure 2. MR98 Series Operational Schematics (continued)

HXN@2XD56B2WN^

=WFBE2F^1

X2W[WHC

>FD>C5BDd^

DXF=WN^5B2C66d2C5

WNDC@5@FB

EFN=]ECCD

OUTLET PRESSURE

INLET PRESSURE

LOADING PRESSURE

HXN@2XD5DWNC5@FB

@ABC51234E=5]W@E5WN@C2NFD5B2C66d2C52C^W6@2F@WXN @ABC51234E=5]W@E5CZ@C2NFD5B2C66d2C52C^W6@2F@WXN

MR98 Series



7X=A56WYC 7X=A5HXN6@2dH@WXN CN=5HXNNCH@WXN56@ADC

7X=A51F@C2WFD

^(,I5H,%-5W(.;

]HH5.(5DHH56-''+

H[4156-,$;+'%%56-''+UKV

H[Q156-,$;+'%%56-''+UKV

1.;'+b5.(5E,%-'++.Ib5HUKV

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 

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

 



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

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

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

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















Table 1. Types MR98L and MR98LD Regulators Body Constructions

Monel®

Hastelloy®

MR98 Series

Table 2. Types MR98H, MR98HD, MR98HH and MR98HHD Regulators Body Constructions

7X=A56WYC 7X=A5HXN6@2dH@WXN CN=5HXNNCH@WXN56@ADC

7X=A51F@C2WFD

^(,I5H,%-5W(.;UOV

]HH5.(5DHH56-''+

H[4156-,$;+'%%56-''+UKV

H[Q16-,$;+'%%56-''+UKV

1.;'+®5.(55E,%-'++.I®5HUKV



  





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



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

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



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



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















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

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





























- continued -

Monel®

Hastelloy®

MR98 Series

Table 2. Types MR98H, MR98HD, MR98HH and MR98HHD Regulators Body Constructions (continued)

7X=A56WYC 7X=A5HXN6@2dH@WXN CN=5HXNNCH@WXN56@ADC

7X=A51F@C2WFD

^(,I5H,%-5W(.;

]HH5.(5DHH56-''+

H[4156-,$;+'%%56-''+UKV

H[Q156-,$;+'%%56-''+UKV

1.;'+®5.(5E,%-'++.I®5HUKV















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



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





















































5

Monel®

Hastelloy®

MR98 Series

Table 3" MR98 Series Body Sizes, Pressure Ranges and Spring Information

@ABC

7X=A56WYC HXN@2XD55

B2C66d2C52FN^CUKV

6B2WN^5]W2C5

=WF1C@C2

6B2WN^5[2CC5

DCN^@E 6B2WN^51F@C2WFD 6B2WN^5BF2@5

Nd17C2 6B2WN^5HXDX2

W;" =N 9%$) G,( W;" 00 W;" 00







 - - - -

2 to 7       1E392527022 

        

12 to 25        

20 to 38        

 15

2 to 7        

        

12 to 25        

20 to 38        







2 to 7     102  1E398927022 

     102   

12 to 25     102   

20 to 38        







2 to 7     102  1E3989X0052 

      Stainless steel  

12 to 25     102 Stainless steel  

MR98H



MR98HD

 - - - -

15 to 35       1E392527022 

25 to 75        

        

130 to 200        

 15

15 to 35        

25 to 75        

        

130 to 200        







15 to 35     102  1E398927022 

25 to 75     102   

     102   

130 to 200        







15 to 35     102  1E3989X0052 

25 to 75      Stainless steel  

     102 Stainless steel  









5 to 35       1E792327092 

        

50 to 100        

75 to 170       1P7888X0022 

MR98HH



MR98HHD

 - - - - 150 to 375     105   

 15 150 to 375     129   





 150 to 375        



MR98 Series

Figure 3. Installation Schematics for Types MR98LD and MR98HD Relief Valves

2CDWC[5Xd@DC@5FN=5XB@WXNFD5

BWBWN^5@X56A6@C1

DXF=WN^5B2C66d2C

dNHXN@2XDDC=5DX]5B2C66d2C

Bd1B

EW^E5B2C66d2C

HXN@2XDDC=5EW^E5B2C66d2C

@ABC51234E=

@ABC51234D=

DX]5B2C66d2C5U[X25DXF=WN^V

HXN@2XDDC=5EW^E5B2C66d2C

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