This content requires Adobe Flash Player version
or later.
Either you do not have Adobe Flash Player installed,
or your version is too old,
or there is a problem with your Flash installation and we were unable to detect it.
Pressure and Temperature Measurement • Diaphragm Seals
Low Pressure Diaphragm Seals D
L Series DESCRIPTION The L Series elements provide users with a cost effective solution for demanding low-pressure applications. These seals feature a removable elastomer diaphragm for pressure ranges from 29" Hg vacuum to 1,250 psig at 100°F. The L Series comes in 11 base models dependent on the seal mounting criteria, flushing connection and process application. Prevent inaccuracies by avoiding very low span in gauge or differential pressure applications which do not provide sufficient differential pressure energy to drive the instrument, seal element, and fill liquid column. L Series diaphragm seals employ diaphragms retained between two bolted members. In the LB and LG models, 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.
FEATURES • Removable elastomer diaphragms
• Ideal for low pressure sensitivity bellows and diaphragm type gauges • Materials available for corrosive applications
• Superior low pressure response: Pressures as low as 2" H2O and Vacuum to 29" Hg (LA and LH Models) • Large volumetric displacement: 1.38 cubic inches • Seal ratings to 5000 psig
¹ 5000 psig available at 100°F (345 bar at 38°C) In-line flow thru welded by user
B
C In-line flow thru welded by user, pipe supplied, schedule dependent D
In-line flow thru thread-attached connection In-line flow thru for ¾” to 2” pipe diameters
E
In-line flow thru for 3” to 8” pipe diameters LC -Supplied in ½"+¾" with class150-1500 ANSI flange rating 1" with class 150-600 ANSI rating. 2-8" with class 150-300 ANSI rating
Operating Temperature Operating Pressure 100°F (38°C) 100°F (38°C)
1250 psig (86 bar)² 1250 psig (86 bar)
100°F (38°C) 100°F (38°C)
– –
100°F (38°C) 100°F (38°C) 100°F (38°C) –
–
² LB and LC Series with non-metal exposed materials are rated at 100 psi (7 bar) A