Emerson Fisher 627B Series Instruction Manual page 4

627B Series
ERAA49923
INLET PRESSURE
INLET PRESSURE
OUTLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
ATMOSPHERIC PRESSURE
OUTLET PRESSURE
RANGE
TYPE
psig
5 to 20
(2)
15 to 40
627BM and
627BMR
35 to 80
70 to 150
140 to 250
627BHM
240 to 500
1. For inlet pressure in excess of 1000 psig / 69.0 bar, refer to the maximum body and disk pressure ratings in the Specifications section.
2. For pressure settings under 10 psig / 0.69 bar, inlet pressure should be limited to approximately 100 psig / 6.9 bar so the setpoint adjustment can be obtained.
3. Only available with 9/16 in. / 14.3 mm orifice. If a smaller orifice is installed the unit will not achieve published capacities.
MAXIMUM PRESSURE DESCRIPTION
Maximum pressure to spring and diaphragm casings
to prevent leak to atmosphere other than relief action
(internal parts damage may occur)
Maximum pressure to spring and diaphragm casings to
prevent burst of casings duringabnormal operation (leak to
atmosphere and internal parts damage may occur)
Maximum diaphragm casing overpressure (above setpoint) to
prevent damage to internal parts
1. If the spring case is pressurized, a metal adjusting screw cap is required. Contact your local Sales Office for details.
4
ADJUSTING SCREW
DIAPHRAGM
PUSHER POST
LEVER
Figure 2. Type 627BM Operational Schematic
Table 1. Maximum Inlet Pressures and Outlet Pressure Ranges
SPRING
PART
NUMBER
bar
0.34 to 1.4 10B3076X012
1.0 to 2.8 10B3077X012
2.4 to 5.5 10B3078X012
4.8 to 10.3 10B3079X012
9.7 to 17.2 10B3078X012
16.5 to 34.5 10B3079X012
Table 2. Maximum Spring and Diaphragm Casing Pressure
CASING MATERIAL
Steel or Stainless steel
Steel or Stainless steel
CONTROL SPRING
STEM
ORIFICE SIZE
COLOR
CODE
In. mm
Yellow
Green
Blue
9/16 14.3
(3)
Red
Blue
Red
TYPE 627BM
DIAPHRAGM
psig
Ductile iron
250
Ductile iron 465
1500
All materials 60
VALVE DISK
ORIFICE
MAXIMUM INLET PRESSURE
Nylon (PA) Disk Nitrile (NBR) Disk
psig bar psig
1500 103 1000
(1)
TYPE 627BMR
bar psig bar
Not Available
17.2
250 17.2
32.1 465 32.1
103 1500 103
4.1 120 8.3
(1)
bar
69
TYPE 627BHM
psig bar
Not Available
800 55.2
Not Available
1500 103
120 8.3