Emerson Fisher MR95 Series - Number of Diaphragms Required

MR95 Series
15
DIAPHRAGM (KEY 12)
GASKET (KEY 19)
GASKET (KEY 19)
PUSHER POST (KEY 10)
LOCKNUT (KEY 31)
LOCK WASHER (KEY 28)
LOWER SPRING SEAT (KEY 8)
DIAPHRAGM HEAD (KEY 21)
DIAPHRAGM (KEY 12)
GASKET (KEY 45)
PUSHER POST (KEY 10)
LOCKNUT (KEY 31)
LOCK WASHER (KEY 28)
LOWER SPRING SEAT (KEY 8)
DIAPHRAGM HEAD (KEY 21)
DIAPHRAGM (KEY 12)
GASKET (KEY 29)
BODY SIZE TYPE SPRING RANGE DIAPHRAGM MATERIAL NUMBER OF DIAPHRAGMS
1/4 NPT
MR95L and
MR95LD
All ranges
Ethylyne Propylene Diene (EPDM) 1
Neoprene (CR) 1
Fluorocarbon (FKM) 1
All ranges except 2 to 6 psig / 0.14 to 0.41 bar Metal 2
2 to 6 psig / 0.14 to 0.41 bar Metal 1
MR95H,
MR95HD,
and MR95HP
All ranges
Metal 2
Ethylyne Propylene Diene (EPDM) 1
Fluorocarbon (FKM) 1
Neoprene (CR) 1
1/2 to
2 inches /
DN 15 to 50
All types All ranges
Metal 2
Ethylyne Propylene Diene (EPDM) 2
Fluorocarbon (FKM) 2
Neoprene (CR) 1
Table 6. Number of Diaphragms Required
Disassemble it for inspection of the diaphragm
(key 12) and two small diaphragm gaskets
(key 29) or O-ring (key 45). Remove the locknut
(key 31) from the pusher post (key 10) and
separate the assembly. An O-ring is used to seal
around the pusher post if an elastomer diaphragm
is used, and the gaskets are used with stainless
steel diaphragm(s).
8. Remove the stem assembly (key 6) except
for regulator with 1/4 NPT body size. Inspect
the O-ring (not shown) from wear or damage.
Replace stem assembly if damage is noted.
9. With diaphragm(s) (key 12) removed, ensure
the pressure registration hole (pitot tube, key 20,
in 3/4-inch / DN 20 and larger body sizes) is
completely open and free of all obstructions.
Table 6. Number of Diaphragms Required
Figure 5. Diaphragm Assembly for MR95 Series with 1-1/2 and 2 inches / DN 40 and 50 Body Sizes
Figure 4. Diaphragm Assembly for MR95 Series with 1/4 NPT to 1 inch / DN 25 Body Sizes
TYPES MR95L AND MR95H METAL DIAPHRAGM
COMPOSITION DIAPHRAGM METAL DIAPHRAGM
TYPES MR95LD AND MR95HD METAL DIAPHRAGM
DIAPHRAGM HEAD (KEY 21)
DIAPHRAGM HEAD (KEY 21)
GASKET (KEY 29)
DIAPHRAGM (KEY 12)
GASKET (KEY 19)