Diaphragm Assembly For Mr95 Series; Number Of Diaphragms Required - Fisher MR95L Instruction Manual

TYPES MR95L AND MR95H METAL DIAPHRAGM
Figure 4. Diaphragm Assembly for MR95 Series with 1/4 NPT and 1/2 to 1 in. / DN 15 to 25 Body Sizes
COMPOSITION DIAPHRAGM
Figure 5. Diaphragm Assembly for MR95 Series with 1-1/2 and 2 in. / DN 40 and 50 Body Sizes
BODY SIZE TYPE
MR95L and
MR95LD
All ranges except 2 to 6 psig / 0.14 to 0.41 bar
1/4 NPT
MR95H,
MR95HD
and MR95HP
1/2 to 2 in. /
All types
DN 15 to 50
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).
DIAPHRAGM (KEY 12)
GASKET (KEY 19)
LOCKNUT (KEY 31)
LOCK WASHER (KEY 28)
LOWER SPRING SEAT (KEY 8)
DIAPHRAGM HEAD (KEY 21)
DIAPHRAGM (KEY 12)
DIAPHRAGM HEAD (KEY 21)
GASKET (KEY 45)
PUSHER POST (KEY 10)
Table 7. Number of Diaphragms Required
SPRING RANGE
All ranges
2 to 6 psig / 0.14 to 0.41 bar
All ranges
All ranges
TYPES MR95LD AND MR95HD METAL DIAPHRAGM
METAL DIAPHRAGM
DIAPHRAGM MATERIAL
Ethylyne Propylene Diene (EPDM)
Neoprene (CR)
Fluorocarbon (FKM)
Metal
Metal
Metal
Ethylyne Propylene Diene (EPDM)
Fluorocarbon (FKM)
Neoprene (CR)
Metal
Ethylyne Propylene Diene (EPDM)
Fluorocarbon (FKM)
Neoprene (CR)
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 in. / DN 20 and larger body sizes) is
completely open and free of all obstructions.
MR95 Series
GASKET (KEY 19)
DIAPHRAGM (KEY 12)
GASKET (KEY 19)
LOCKNUT (KEY 31)
LOCK WASHER (KEY 28)
LOWER SPRING SEAT (KEY 8)
DIAPHRAGM HEAD (KEY 21)
DIAPHRAGM (KEY 12)
GASKET (KEY 29)
DIAPHRAGM HEAD (KEY 21)
GASKET (KEY 29)
PUSHER POST (KEY 10)
NUMBER OF DIAPHRAGM
1
1
1
2
1
2
1
1
1
2
2
2
1
15