Brochure
79
Regulators
FLOW CAPACITY—GPM (LPM)
PRESSURE DROP ( P)—POUNDS PER SQUARE INCH (BAR)
3
/4
"
NPT
1
1
/4
"
NPT
1
1
/2
"
NPT
1
"
NPT
2
"
NPT
100 (6.9)
90 (6.2)
80 (5.5)
70 (4.8)
60 (4.1)
50 (3.5)
40 (2.8)
30 (2.1)
20 (1.4)
10 (.7)
9 (.62)
8 (.55)
7 (.49)
6 (.4)
5 (.35)
4 (.28)
3 (.2)
2 (.14)
1 (.069)
200
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
(757)
(379)
(341)
(303)
(265)
(227)
(189)
(151)
(114)
(76)
(38)
(34.1)
(30.3)
(26.5)
(22.7)
(18.9)
(15.1)
(11.4)
(7.6)
(3.8)
Cv
Model Part NPT Size Weight
Number Number in. lbs. (kg)
21LT 401281
3
⁄4 3
1
⁄2 (1.6)
21LT 401284 13
1
⁄2 (1.6)
21LT 401287 1
1
⁄4 6
1
⁄2 (2.9)
21LT 401290 1
1
⁄2 7
1
⁄2 (3.4)
21LT 401293 29
1
⁄2 (4.3)
Model Part NPT Size Weight
Number Number in. lbs. (kg)
21 401239
3
⁄4 3 (1.4)
21 401242 13(1.4)
21 401245 1
1
⁄4 6 (2.7)
21 401248 1
1
⁄2 7 (3.2)
21 401251 29(4.1)
Capacities
Adjustable range of 140 to 200°F (60 to 93°C). Maximum supply temperature 235°F (113°C).
Adjustable range of 100 to 140°F (38 to 60°C). Maximum supply temperature 235°F (113°C).
Model Part NPT Size Weight
Number Number in. lbs. (kg)
21H 401024
3
⁄4 3 (1.4)
21H 401030 13(1.4)
21H 401033 1
1
⁄4 6 (2.7)
21H 401048 1
1
⁄2 7 (3.2)
21H 401102 29(4.1)
Adjustable range of 100 to 200°F (38 to 93°C). Maximum supply temperature 235°F (113°C).
Ordering Information
Series 21 (continued)
Hoffman Specialty
®
Regulators