Bulletin 71.1:627W
4
Table 1. Maximum Inlet Pressure, Differential Pressure, and Outlet Pressure Ranges
TYPE
NUMBER
OUTLET PRESSURE
RANGE CONTROL
SPRING (COLOR)
ORIFICE SIZE,
INCHES (mm)
MAXIMUM INLET PRESSURE, PSIG (bar)
MAXIMUM DIFFERENTIAL PRESSURE,
PSID (bar d)
Elastomer Disk Nylon (PA) Disk Elastomer Disk Nylon (PA) Disk
627W
10 to 20 psig
(0,69 to 1,4 bar)
10B3076X012 (yellow)
1/4 (6,3) 220 (15,2) 420 (29,0) 200 (13,8) 400 (27,6)
1/2 (13) 220 (15,2) 250 (17,2) 200 (13,8) 250 (17,2)
15 to 40 psig
(1,0 to 2,8 bar)
10B3077X012 (green)
1/4 (6,3) 240 (16,5) 440 (30,3) 200 (13,8) 400 (27,6)
1/2 (13) 240 (16,5) 300 (20,7) 200 (13,8) 300 (20,7)
35 to 80 psig
(2,4 to 5,5 bar)
10B3078X012 (blue)
1/4 (6,3) 280 (19,3) 480 (33,1) 200 (13,8) 400 (27,6)
1/2 (13) 280 (19,3) 480 (33,1) 200 (13,8) 400 (27,6)
70 to 150 psig
(4,8 to 10,3 bar)
10B3079X012 (red)
1/4 (6,3) 350 (24,1) 550 (37,9) 200 (13,8) 400 (27,6)
1/2 (13) 350 (24,1) 550 (37,9) 200 (13,8) 400 (27,6)
627WH
140 to 250 psig
(9,6 to 17,2 bar)
10B3078X012 (blue)
1/4 (6,3) 450 (31,0) 650 (44,8) 200 (13,8) 400 (27,6)
1/2 (13) 450 (31,0) 500 (34,5) 200 (13,8) 250 (17,2)
240 to 500 psig
(16,5 to 34,5 bar)
10B3079X012 (red)
1/4 (6,3) 700 (48,3) 900 (62,1) 200 (13,8) 400 (27,6)
1/2 (13) 700 (48,3) 750 (51,7) 200 (13,8) 250 (17,2)
Table 2. Maximum Spring and Diaphragm Casing Pressure
(1)
MAXIMUM PRESSURE CONDITION
DIAPHRAGM CASING
MATERIAL
TYPE 627W TYPE 627WH
Psig bar Psig bar
Maximum pressure to spring and diaphragm casings to
prevent leak to atmosphere (internal parts damage may occur)
Ductile Iron 250 17,2 - - - - - - - -
Steel or Stainless Steel 250 17,2 800 55,2
Maximum pressure to spring and diaphragm casings to prevent
burst of casings during abnormal operation (leak to atmosphere and
internal parts damage may occur)
Ductile Iron 465 32,1 - - - - - - - -
Steel or Stainless Steel 1500 103 1500 103
Maximum diaphragm casing overpressure (above setpoint) to prevent
damage to internal parts
All Materials 60 4,1 120 8,3
1. If the spring case is pressurized, a metal adjusting screw cap is required. Contact your local Sales Ofce for details.
Table 3. Elastomer Temperature Ranges
MATERIAL DISK/DIAPHRAGM
TEMPERATURES
USAGE
°F
(1)
°C
(1)
Nitrile (NBR)
Disk
-40 to 180 -40 to 82 General
Diaphragm
Fluorocarbon (FKM)
Disk
0 to 300 -18 to 149
Not Recommended for Hot
Water Service
Diaphragm
Ethylenepropylene (EPDM)
Disk
-40 to 275 -40 to 135
Not Recommended for
Hydrocarbon Service
Diaphragm
Peruoroelastomer (FFKM) Disk 0 to 400 -18 to 204 Corrosive
Nylon (PA) Disk -40 to 200 -40 to 93 General
PTFE Diaphragm Protector -40 to 400 -40 to 204 Corrosive
1. Stainless steel body is rated to -40°F (-40°C). Steel and ductile iron bodies are rated to -20°F (-29°C).
(8 strony)
(1 strony)
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