Jerguson® Series 20™ – Medium Pressure Glass Liquid Level Gages



•Recessed Gasket Seat in Chamber and Cover
•Tempered Borosilicate Glass conforming to BS3463, JIS B8211, & DIN 7081
•Wetted Parts conform to NACE MR0175 & MR0103
•All parts listed in ASTM & ASME B31.3
•ABS Certified
•Carbon Steel Covers are Shrouded to Protect the Glass Edges
•All Gages feature a continuous, one-piece chamber regardless of length
The Jerguson Series 20 Gage is the most common gage produced and will cover 80-85% of the applications encountered.

Important features include a recessed gasket surface (standard on all gage series) and shrouded covers.  A recessed gasket surface provides positive location of the seal gasket during both assembly and field repair and also makes it possible to repair a Jerguson gage while it is mounted to the vessel.  The recessed gasket surface is also an important safety feature in the fact that it contains the gasket and helps prevent lateral movement which could lead to a gasket blow-out (as with competitive gages.)

TEST PRESSURE: All gages are hydrostatically tested by Jerguson prior to shipment @ 1- 1/2 times the design pressure rating at 100°F (38°C).  For temperature above 600°F (316°C) aluminosilicate glass must be used.



Brochure: Series 20 Gage Brochure

Drawings: Series 20 Gage Drawing, End-Connect, Carbon Steel

Series 20 Gage Drawing, End-Connect, Stainless Steel

IOM: Flat Glass Gage Installation, Operation and Maintenance Instruction Manual

Videos: Jerguson Reflex Gage Maintenance

Jerguson Transparent Gage Maintenance

Minimum Centers Guide: Resource book for determining minimum center-to-center dimension for gage and valve assemblies