627 Series Table 3. Type 627R Internal Relief Performance (1) OUTLET PRESSURE SETTING, PSIG (bar)
OUTLET PRESSURE RANGE, SPRING PART NUMBER, AND COLOR
MAXIMUM ALLOWABLE DOWNSTREAM SYSTEM PRESSURE, PSIG (bar)
Orifice Size, Inches (mm) 3/16 (4,76)
1/4 (6,35)
3/8 (9,53)
1/2 (12,7)
10 (0,7)
60 100 125 175 200 250
(4,1) (6,9) (8,6) (12,1) (13,8) (17,2)
1250 2000 2000 2000 2000 2000
(86,2) (138) (138) (138) (138) (138)
740 1500 1900 2000 2000 2000
(51,0) (103) (131) (138) (138) (138)
320 620 830 1100 1300 1600
(22,1) (42,7) (57,2) (75,8) (89,6) (110)
190 390 480 670 770 960
(13,1) (26,9) (33,1) (46,2) (53,1) (66,2)
95 180 220 320 360 450
(6,55) (12,4) (15,2) (22,1) (24,8) (31,0)
75 130 160 220 260 320
(5,17) (8,96) (11,0) (15,2) (17,9) (22,1)
15 (1,0)
60 100 125 175 200 250
(4,1) (6,9) (8,6) (12,1) (13,8) (17,2)
1000 2000 2000 2000 2000 2000
(69,0) (138) (138) (138) (138) (138)
620 1400 1900 2000 2000 2000
(42,7) (96,5) (131) (138) (138) (138)
260 610 810 1100 1300 1600
(17,9) (42,1) (55,8) (75,8) (89,6) (110)
170 370 480 670 770 960
(11,7) (25,5) (33,1) (46,2) (53,1) (66,2)
90 170 220 320 360 450
(6,21) (11,7) (15,2) (22,1) (24,8) (31,0)
70 130 160 220 260 320
(4,83) (8,96) (11,0) (15,2) (17,9) (22,1)
20 (1,4)
60 100 125 175 200 250
(4,1) (6,9) (8,6) (12,1) (13,8) (17,2)
850 2000 2000 2000 2000 2000
(58,6) (138) (138) (138) (138) (138)
490 1300 1800 2000 2000 2000
(33,8) (89,6) (124) (138) (138) (138)
210 600 800 1100 1300 1600
(14,5) (41,4) (55,2) (75,8) (89,6) (110)
130 360 480 670 770 960
(8,96) (24,8) (33,1) (46,2) (53,1) (66,2)
80 170 220 320 360 450
(5,52) (11,7) (15,2) (22,1) (24,8) (31,0)
65 120 160 220 260 320
(4,48) (8,27) (11,0) (15,2) (17,9) (22,1)
15 (1,0)
60 100 125 175 200 250
(4,1) (6,9) (8,6) (12,1) (13,8) (17,2)
1000 2000 2000 2000 2000 2000
(69,0) (138) (138) (138) (138) (138)
380 1300 1800 2000 2000 2000
(26,2) (89,6) (124) (138) (138) (138)
210 590 800 1100 1300 1600
(14,5) (40,7) (55,2) (75,8) (89,6) (66,2)
130 350 470 640 780 960
(8,96) (24,1) (32,4) (44,1) (53,8) (66,2)
80 170 220 320 370 450
(5,52) (11,7) (15,2) (22,1) (25,5) (31,0)
65 120 160 220 260 320
(4,48) (8,27) (11,0) (15,2) (17,9) (22,1)
20 (1,4)
60 100 125 175 200 250
(4,1) (6,9) (8,6) (12,1) (13,8) (17,2)
630 2000 2000 2000 2000 2000
(43,4) (138) (138) (138) (138) (138)
200 1200 1700 2000 2000 2000
(13,8) (82,7) (117) (138) (138) (138)
150 550 760 1100 1300 1600
(10,3) (37,9) (52,4) (75,8) (89,6) (66,2)
100 330 450 630 770 960
(6,90) (22,8) (31,1) (43,4) (53,1) (66,2)
70 160 210 320 360 460
(4,83) (11,0) (14,5) (22,1) (24,8) (31,7)
65 120 160 220 260 320
(4,48) (8,27) (11,0) (15,2) (17,9) (22,1)
30 (2,1)
100 125 175 200 250
(6,9) (8,6) (12,1) (13,8) (17,2)
2000 2000 2000 2000 2000
(138) (138) (138) (138) (138)
950 1500 2000 2000 2000
(65,5) (103) (138) (138) (138)
450 670 1000 1200 1600
(31,1) (46,2) (69,0) (82,7) (110)
260 400 610 760 970
(17,9) (27,6) (42,1) (52,4) (66,9)
140 190 300 360 460
(9,65) (13,1) (20,7) (24,8) (31,7)
110 150 220 260 320
(7,58) (10,3) (15,2) (17,9) (22,1)
40 (2,8)
100 125 175 200 250
(6,9) (8,6) (12,1) (13,8) (17,2)
1500 2000 2000 2000 2000
(103) (138) (138) (138) (138)
700 1300 1800 2000 2000
(48,3) (89,6) (124) (138) (138)
330 560 1000 1200 1600
(22,8) (38,6) (69,0) (82,7) (110)
200 340 550 730 970
(13,8) (23,4) (37,9) (50,3) (66,9)
120 180 290 350 460
(8,27) (12,4) (20,0) (24,1) (31,7)
108 140 220 250 320
(7,45) (9,65) (15,2) (17,2) (22,1)
5(3) to 20 psig (0,3 to 1,4 bar) 10B3076X012 Yellow
15 to 40 psig (1,0 to 2,8 bar)
MAXIMUM INLET PRESSURE TO KEEP MAXIMUM ALLOWABLE DOWNSTREAM SYSTEM PRESSURE FROM BEING EXCEEDED, PSIG (bar)(2)
10B3077X012 Green
3/32 (2,38)
1/8 (3,18)
- continued -
Startup and Adjustment Startup !
WARNING
To avoid personal injury or property damage due to explosion or damage to regulator or downstream components during startup, release downstream pressure to prevent an overpressure condition on the diaphragm of the regulator. In order to avoid an overpressure condition and possible equipment
6
1. 2. 3. 4.
damage, pressure gauges should always be used to monitor pressures during startup. Slowly open the upstream shutoff valve. Slowly open the downstream shutoff valve. Check all connections for leaks. Make final control spring adjustments according to the adjustment procedures.
Adjustment The range of allowable pressure settings is marked on the nameplate (Figure 2). If a pressure setting beyond this range is necessary, substitute the appropriate regulator control spring. Change the nameplate to indicate the new pressure range.