美国maxitrol主要研发和生产用于控制煅烧的各种控制装置，maxitrol公司总部目前位于南菲尔德。美国密歇根州的生产设备是在美国密歇根州布利斯菲尔德和科隆。maxitrol公司主动面对市场的变化和挑战，通过优秀员工团队的共同努力，公司在天然气工业领域不断地发展并开发新的技术。目前l创造和开发了325系列调压阀，开发的selectra电子火焰调制系统可用于直接或间接的火焰加热。
selectra调节阀应用对照表
model number |
swing radius |
dimensions - expressed in inches (mm) |
|||
a |
b |
c |
d |
||
mr410, mr410h-1, m411, m420, m420h, m451 |
3.1 |
3.9 |
2 |
2.5 |
0.9 |
|
(79) |
(100) |
(51) |
(54) |
(24) |
mr510, mr510h-1, m511, m520, m520h, m551 |
4.3 |
5.3 |
3.25 |
3.4 |
1.2 |
|
(109) |
(135) |
(83) |
(86) |
(30) |
mr610, mr610h-1, m620, m620h, m651 |
5.7 |
7.1 |
3.9 |
4 |
1.5 |
|
(145) |
(180) |
(99) |
(102) |
(37) |
m611 |
6.2 |
7.7 |
3.9 |
4 |
1.5 |
|
(158) |
(196) |
(99) |
(102) |
(37) |
mr212d mr251d |
8.1 |
10.2 |
7 |
5.5 |
2.3 |
|
(206) |
(259) |
(178) |
(140) |
(59) |
mr212e mr251e |
8.6 |
11.25 |
9.1 |
8 |
3 |
|
(218) |
(286) |
(232) |
(203) |
(76) |
mr212g mr251g |
10.4 |
14.75 |
13.5 |
11.75 |
4.6 |
|
(264) |
(375) |
(343) |
(298) |
(118) |
mr212j (not shown above) |
-- |
24 (610) |
21.5 (546) |
13.9 (352) |
5.9 (149) |
model number【敏感词】pipe size |
100 (2.83) |
150 (4.25) |
200 (5.66) |
250 (7.1) |
300 (8.5) |
350 (9.9) |
400 (11.3) |
450 (12.7) |
500 (14.2) |
600 (17.0) |
700 (19.8) |
750 (21.2) |
min. flow |
|
mr410 mr410h-1 m411 |
3/8 x 3/8 |
0.33 (82) |
0.75 (188) |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
|5-90 (14-250) |
m420| m420h m451 |
1/2 x 1/2 |
0.27 (67) |
0.61 (153) |
|||||||||||
mr510 mr510h-1 m511| |
1/2 x 1/2 |
-- |
0.17 (42) |
0.30 (75) |
0.47 (118) |
0.67 (168) |
0.92 (230) |
-- |
-- |
-- |
-- |
-- |
-- |
|5-125 (14-350) |
m520t m520h m551 |
3/4 x 3/4 |
-- |
0.12 (30) |
0.21 (52) |
0.32 (80) |
0.47 (118) |
0.64 (160) |
0.83 (207) |
t5-185 (14-520) |
|||||
mr610 mr610h-1 |
3/4 x 3/4 |
-- |
-- |
-- |
0.14 (35) |
0.20 (50) |
0.27 (67) |
0.36 (90) |
0.45 (113) |
0.56 (140) |
0.81 (203) |
-- |
-- |
110-330 (28-930) |
m620| m620h m651 |
1 x 1 |
-- |
-- |
-- |
0.12 (30) |
0.16 (40) |
0.22 (55) |
0.29 (72) |
0.37 (92) |
0.45 (113) |
0.66 (165) |
0.90 (225) |
1.00 (250) |
|
t【敏感词】t models to which min. flow applies. (minimum flow maximum calculated ap = 3.5” w.c. [single by-pass])
model number【敏感词】pipe size |
100 (2.83) |
150 (4.25) |
200 (5.66) |
300 (8.5) |
400 (11.3) |
500 (14.2) |
600 (17.0) |
700 (19.8) |
800 (22.7) |
900 (25.5) |
1000 (28.3) |
csa listed |
min. flow |
|
m611* |
3/4 x 3/4 |
0.02 (5) |
0.06 (15) |
0.09 (23) |
0.20 (50) |
0.36 (90) |
0.56 (140) |
0.81 (203) |
1.10 (275) |
1.45 (363) |
1.83 (458) |
-- |
1000 |
10-330 (28-930) |
1 x 1 |
0.02 (5) |
0.05 (12) |
0.07 (18) |
0.16 (40) |
0.29 (72) |
0.46 (115) |
0.66 (165) |
0.90 (225) |
1.18 (295) |
1.50 (375) |
1.85 (463) |
|||
model number【敏感词】pipe size |
1000 (28.3) |
1500 (42.5) |
2000 (56.5) |
2500 (70.8) |
3000 (85.0) |
3500 (99.0) |
5000 (142) |
6000 (170) |
7000 (198) |
10000 (283) |
11000 (311) |
csa listed |
min. flow applies to mr212，s only |
|
|
1 x 1 |
1.9 (475) |
2.9 (725) |
4.9 (1225) |
6.2** (1550) |
-- |
|
|
|
|
|
|
2250 |
|
mr212d* mr251d |
1％ x 1％ |
1.7 (425) |
2.3 (575) |
3.1 (775) |
4.8 (1200) |
5.9** (1475) |
-- |
-- |
-- |
-- |
-- |
-- |
2750 |
25-300 (71-850) |
|
11/2 x 11/2 |
1.7 (425) |
2.2 (550) |
2.9 (725) |
3.9 (975) |
5.4 (1350) |
|
|
|
|
|
|
3000 |
|
mr212e* |
11/2 x 1/ |
|
|
1.9 (475) |
2.4 (600) |
2.9 (725) |
3.5 (875) |
6.0** (1500) |
-- |
-- |
-- |
-- |
4750 |
25-300 |
mr251e |
2 x 2 |
|
|
1.9 (475) |
2.1 (525) |
2.4 (600) |
2.7 (675) |
5.5 (1375) |
6.0** (1500) |
-- |
-- |
-- |
5250 |
(71-850) |
mr212g* |
2/ x 2/ |
|
|
|
|
|
1.9 (475) |
2.2 (550) |
2.6 (650) |
3.0 (750) |
6.1 (1525) |
-- |
10000 |
50-450 (140-1270) |
mr251g |
3 x 3 |
|
|
|
|
|
-- |
2.1 (525) |
2.3 (575) |
2.6 (650) |
4.6 (1150) |
5.6 (1400) |
11000 |
-- |
*u.l. recognized
**pressure【敏感词】figures derived from csa maximum listed capacities in far right column (not flow at column top).
model number【敏感词】pipe size |
6000 (170) |
8000 (227) |
10000 (283) |
12000 (340) |
14000 (397) |
16000 (397) |
18000 (510) |
20000 (566) |
22000 (623) |
24000 (680) |
27000 (765) |
30000 (850) |
min. flow |
|
mr212j |
4 x 4 |
1.9 (475) |
2.1 (525) |
2.4 (600) |
2.7 (675) |
3.1 (775) |
3.6 (900) |
4.5 (1125) |
5.4 (1350) |
6.6 (1650) |
7.8 (1950) |
9.9 (2475) |
12.4 (3100) |
1-1000 (3-2830) |
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