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ESG | ENVIRONMENTAL SEALED
GAUGE GLASS

Superior Products

The Superior Products Environmental Sealed Gauge Glass replaces unprotected gauge glass in exposed and environmentally sensitive service. Its sealed design eliminates the two most common gauge glass breakage points, installation and impact, reducing spill and leak risk.

Stainless steel nozzles resist corrosion in outdoor and sensitive locations, and the sealed construction keeps the assembly protected over long service. The gauge pairs with Superior gauge cocks and guards for a complete, safety-focused level indication package.

The ESG is offered with 5/8" and 3/4" nozzles in standard and custom lengths. Made in the USA.

Typical Applications:
Exposed and outdoor tank service, environmentally sensitive locations, sealed level indication, spill-prevention installs, and tank and vessel gauging.

Key Features

  • Made in the USA
  • Replaces unprotected gauge glass
  • Eliminates two common breakage points
  • Reduced spill and leak risk
  • Stainless steel nozzles
  • Sealed construction
  • 5/8" and 3/4" nozzles
  • Standard and custom lengths
  • Environmental protection
  • Exposed and outdoor service
  • Environmentally sensitive locations
  • Corrosion-resistant nozzles
  • Pairs with Superior gauge cocks and guards
  • Standard replacement parts
  • Improved operator safety
  • NACE-compliant materials available

PERFORMANCE ADVANTAGES

Why the Superior ESG Series Performs Where It Counts

ELIMINATES COMMON BREAKAGE POINTS

The sealed design removes the two most frequent gauge glass failure points, installation and impact, that cause leaks and spills. That directly improves reliability and environmental safety on exposed installs.

BUILT FOR THE ENVIRONMENT

Stainless steel nozzles and sealed construction resist corrosion and contamination in outdoor and sensitive locations. The gauge holds up where unprotected glass fails.

REDUCES SPILL RISK

By protecting the glass and its connections, the ESG cuts the risk of leaks that create cleanup and compliance problems. That matters most in environmentally sensitive service.

COMPLETE, SAFETY-FOCUSED PACKAGE

Paired with Superior gauge cocks and guards, the ESG forms a matched assembly built around operator and environmental safety. One source covers the full level-indication package.

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Other Products by Superior Products

Gauge Glass

Transparent gauge glass that provides a direct visual reading of liquid level in tanks, columns,
and process vessels.

Gauge Guards

Protective gauge guard that shields the gauge glass from impact and accidental contact while keeping the level fully visible.

Stainless Steel Bleed Rings

Stainless steel bleed ring that installs between flanges to provide a tapped point for draining, venting, or sampling the line.

Carbon Steel Bleed Rings

Carbon steel bleed ring that installs between flanges to provide a tapped point for draining, venting, or sampling the line.

Spring Loaded Ball Checks

Spring-loaded ball check that seals automatically if the gauge glass fails, stopping flow and containing the process fluid safely.

Bird Cages

Bird cage guard that surrounds a tubular gauge glass with protective rods, shielding it from impact while keeping level visible.

2" Tee Style BPR

Two-inch tee-style back pressure regulator that holds consistent upstream pressure by relieving excess flow through the tee body.

2" Hammer Union BPR

Two-inch back pressure regulator with a hammer union end for fast makeup, holding steady upstream pressure in the line.

3" Tee Style BPR

Three-inch tee-style back pressure regulator that holds consistent upstream pressure by relieving excess flow through the tee body.

3" Hammer Union BPR

Three-inch back pressure regulator with a hammer union end for fast makeup, holding steady upstream pressure in the line.

Inline BPR

Inline back pressure regulator that installs directly in the run and holds steady upstream pressure without a separate tee body.

Extreme BPR

Heavy-duty back pressure regulator built for extreme pressures and abrasive service where standard regulators reach their limit.

Brass Gauge Cocks

Brass gauge cock that isolates and vents a gauge glass or column, allowing safe blowdown and glass replacement in service.

Carbon / Stainless Gauge Cocks

Carbon & stainless steel gauge cock that isolates and vents a gauge glass, rated for higher pressures and corrosive media.

Superior Drum Gauge

Boiler drum water gauge that gives a clear, direct reading of liquid level for safe monitoring of steam
drum operation.