MR95 Series
4
Figure 2.
MR95 Series Operational Schematics
iNLET PRESSuRE
ouTLET PRESSuRE
aTMoSPHERic PRESSuRE
SPRiNG
GaSKET
METaL DiaPHRaGMS
TYPE MR95H WITH 2 METAL DIAPHRAGMS (ALSO TYPICAL OF
TYPES MR95HT AND MR95L EXCEPT FOR TYPE MR95L WITH 1/4 NPT
BODY SIZE, 2 to 6 psi / 0.14 to 0.41 bar RANGE)
SPRiNG
GaSKET
METaL DiaPHRaGM
TYPE MR95L (1/4 NPT, 2 to 6 psi / 0.14 to 0.41 bar RANGE)
WiTH METaL DiaPHRaGM
DiaPHRaGM
coNTRoL SPRiNG
coNTRoL LiNE TaP
aDJuSTiNG ScREW
PiToT TuBE
STEM
ORIFICE
VaLVE PLuG
FRONT AND INTERNAL VIEW OF
TyPE MR95H WiTH iNTERNaL
PRESSuRE REGiSTRaTioN
BACK VIEW OF
1/2 iNcH / DN 15 TyPE MR95H
WiTH EXTERNaL
PRESSuRE REGiSTRaTioN
SIDE AND INTERNAL VIEW OF
3/4 TO 2-INCH / DN 20 TO 50
TyPE MR95H WiTH EXTERNaL
PRESSuRE REGiSTRaTioN
(ALSO TYPICAL OF TYPE MR95L,
1/2 TO 2-INCH / DN 15 TO 50 BODY SIZES)
Principle of Operation
For Types MR95H, MR95L,
MR95HP, and MR95HT
Pressure Reducing Regulators
Types MR95L, MR95H, MR95HP, and MR95HT (see
Figure 2) are direct-operated regulators and use
spring force to regulate outlet pressure. Downstream
pressure is registered either internally through the
body or externally through a control line to the under
side of the diaphragm. When the downstream
pressure is at or above the set pressure, the disk is
held against the orifice, and restricting flow through
the regulator. When demand increases, downstream
pressure drops slightly allowing the spring to extend,
moving the stem down and the disk away from the
orifice. This allows fluid flow through the body to the
downstream system.
