Diaphragm seal with threaded connection L series
for pressure gaugesbellows

diaphragm seal with threaded connection
diaphragm seal with threaded connection
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Installation system
with threaded connection
Other characteristics
for pressure gauges, bellows

Max.: 34,500,000 Pa (5,003.8 psi)

Min.: 0 Pa (0 psi)


Type L Series low-pressure diaphragm seals feature removable, elastomer diaphragms that may be replaced or repaired if required. These seal elements are intended for low-pressure sensitivity instruments such as bellows and diaphragm type gauges. They are sensitive to pressure changes as low as 2” H2O (51 mm H2O at 4°C). Type L Series diaphragm seals employ diaphragms retained between two bolted members. In the clean-out design, the diaphragms are situated between the top and middle ring. In the LB and LG design, the diaphragms are located between the top and bottom. The diaphragm is loosely retained in the upper housing for easy repair or replacement. This extends the life of the seal element and allows for field replacement and service. Threaded Seal Eléments There are four basic versions of L Sériés diaphragm seals with threaded attachments. The LB seal element is used for pressure applications only and has a pressure rating of 1250 psig at 100°F (86 bar at 38°C). The LG seal element is similar to the LB seal, except that it has a 1/4 NPT flushing connection. The LA seal element has a standard pressure rating of 1250 psig at 100°F (86 bar at 38°C), but may also be supplied with a pressure rating of up to 5000 psig. The LH seal element is similar to the LA seal element except that it features a 1/4 NPT flushing connection. Both hâve an extended area albwing for négative displacement making them idéal for vacuum applications. Flanged Seal Eléments There are two basic versions of flanged L Sériés seal éléments. The flange is a standard raised face style.
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.