Jerguson · Level Gages

Jerguson Series 300L reflex and transparent level gage, Class 300

Name: Jerguson Series 300L reflex and transparent level gage, Class 300
Brand: Jerguson
SKU: Armored flat glass gages

Economical Class 300 flat glass level gage with Jerguson 25 mm glass for long visible ranges per section, reflex (R-300L) or transparent (T-300L), up to 750 psi (51.7 barg) at 100 °F.

The Series 300L is the economical Jerguson flat glass gage for services up to Class 300. It gives more visible range per section by using the proprietary Jerguson 25 mm glass, which is thinner, narrower and longer than the traditional 34 mm gage glass.

Like the other Jerguson series it has a continuous one-piece chamber and a recessed gasket seat that locates the gasket during assembly and field repair. The covers are non-shrouded bar stock and the bolting is ASTM grade. Because each section is long, the 300L is not recommended for high pressure steam; use a Series 20 or 32 there.

Selection data we need

Reflex or transparent, visible range or centre-to-centre distance, number of sections and glass size, design pressure and temperature, medium, chamber material (carbon or stainless steel), connection type and size, and options such as mica shields, frost extensions or illumination.

Applications

Low pressure tanks and vessels up to Class 300
Long visible ranges at lower cost
Not recommended for high pressure steam

Variants: R-300L reflex, T-300L transparent; weld pad W300L on a separate page
Design: Continuous one-piece chamber, recessed gasket seat, bar stock non-shrouded covers, proprietary 25 mm glass (thinner, narrower and longer than standard 34 mm glass)
Code: Parts listed in ASTM or ASME B31.3, wetted parts to NACE MR0175 and MR0103, CE models available; hydrotested at 1.5 x rating
Sizes: Glass sizes 11, 12, 13, 15, 18, 20; visible range 10.25" (260 mm) per section up to 124.7" (3168 mm) in six sections
Pressure: Carbon steel chamber 750 psi (51.7 barg) at 100 °F, 605 psi (41.7 barg) at 600 °F; stainless steel chamber 720 psi (49.6 barg) at 100 °F; saturated steam 300 WSP
Temperature: Tempered borosilicate glass to 600 °F (316 °C)
Connections: 1/2" and 3/4" NPT female top and bottom; socket weld, flanged or close hook-up (side/side) optional
Materials: Carbon steel or stainless steel chamber; bolting A193 B7 / A194 2H, NACE options B7M/2HM or B8M/8M
Options: Mica shields (transparent), non-frost extensions, support brackets, illuminators, FP-11 offshore coating

Models: Level Gages

Jerguson

Jerguson Series 20 reflex and transparent armored level gage

Medium pressure armored flat glass level gage, reflex (R-20) or transparent (T-20), up to 3270 psi (225.5 barg) at 100 °F, one-piece bar stock chamber, recessed gasket seat, glass sizes 1 to 9.

Jerguson

Jerguson Series 32 reflex and transparent level gage, to 4000 psi

High pressure armored flat glass level gage with recessed mid-span tie-bars, reflex (R-32) to 4000 psi (275.8 barg) or transparent (T-32) to 3000 psi (206.8 barg) at 100 °F, steam to 750 WSP.

Jerguson

Jerguson Series 40 heavy duty level gage, to 5000 psi

Heavy duty flat glass level gage for high pressure process and steam service, 5000 psi (344.7 barg) at 100 °F in carbon steel and 316 SS, saturated steam to 1500 WSP.