Page 20 - C:\Users\nancy.chavez\Documents\Flip PDF Professional\Polar_service_center_website_catalog\

“New Generation” DOT 407 Magnetic Vacuum Breaker

FUNCTION

The DOT 407 Magnetic Vacuum Breaker is a valve designed to limit
negative pressure (vacuum) in a typical tank trailer. A permanent
magnetic force controls the movement of the valve poppet to
open on demand at 4” Hg or greater. All working parts are kept
away from the airflow paths, which promotes easy cleaning and
hassle-free repairs. The valve body has a 1” female port inlet to
accept a variety of air inlet fittings. A 1⁄4” female port is standard
to accept a gauge. The unit is equipped with either:
Tef-O-Sil, Viton® or Kalrez® O-Ring seal.

Special elastomers and accessory packages are available
upon request.

3” NPS Thread 4” NPS Thread
Complete vacuum Complete vacuum
breaker designed to
8˝ 8˝ 8˝ breaker designed 8˝
thread on a 3” Nipple. to thread on a 4”
Swivels 360° for easy Nipple. Swivels 360°
positioning of air for easy positioning
6˝ accessory package. 6˝ 6˝ of air accessory 6˝
package.
®
3X407MVBT-T Teflon
(GC62000) 407MVBLT-T Teflon ®
4 7 /8˝ 6 1 /4˝ ® 6 1 /4˝ (GC72000) 7 ˝
13 1 /2˝
13 1 /2˝ 3X407MVBT-K Kalrez 13 1 /2˝ 13 1 /2˝
®
(GC61000) 407MVBLT-K Kalrez
(GC71000)
Viton® available on request.
8˝
3” TTMA Flange 4” TTMA Flange
8˝ 8˝ 8˝ 8˝ Complete vacuum 8˝ Complete vacuum 9 1 /2˝
8˝
breaker designed for breaker designed for
installation on a tank 8˝ 5 3 /4˝ installation on a tank 8˝
trailer flanged nozzle. 5 3 /4˝
trailer flanged nozzle.
6˝ 6˝ 6˝ 6˝
6˝ 6˝
6˝ 407MVBLF-T Teflon ® 6˝
3X407MVBF-T Teflon ® 5 1 /4˝ (GC72100)
3 3 /4˝
(GC62100) 13 1 /2˝
11 3 /4˝
6 1 /4˝ 7 ˝ 407MVBLF-K Kalrez ®
4 7 /8˝ /4˝ 6 1 /4˝ 3X407MVBF-K Kalrez ® 7 ˝
6 1
13
13 1 /2˝ 1 /2˝ 13 1 /2˝ 1 /2˝ 13 1 /2˝ 13 1 /2˝ (GC71100)
13
(GC61100) 6 1 /4˝ 7 ˝
13 1 /2˝ 13 1 /2˝
Viton® available on request.
8˝ 8˝
Mitered Cut Straight Stub
9 1 /2˝ Complete vacuum breaker 9 1 8˝ /2˝ Complete vacuum
designed to be welded to breaker designed to 9 1 /2˝
a domecover and conform
5 3 /4˝ 5 3 /4˝ weld to a domecover
to its curvature. or tank shell.
5 3 /4˝ 5 3 /4˝ 5 3 /4˝
5 3 /4˝
407MVBLM-T Teflon ® 407MVBLS-T Teflon ®
(GC72300)
5 1 /4˝ 3 3 /4˝ 5 1 /4˝ 3 3 /4˝ (GC72200)
13 1 /2˝
3 3 /4˝
13 1 /2˝ 11 3 /4˝ 407MVBLM-K Kalrez ® 5 1 /4˝ 11 3 /4˝ 407MVBLS-K Kalrez ®
GC71300) 13 1 /2˝ (GC71200) 11 3 /4˝
Viton® available on request.
Kalrez® is a Registered Trademark of Dupont Dow Elastomers. | Teflon® is a Registered Trademark of Dupont. | Viton® is a Registered Trademark of Dupont.
17