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Shand & Jurs 95021 Quick-Clamp Gauge Hatch

Cam-Actuated Pressure-Compatible Gauge Hatch

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Shand & Jurs 95021 Quick-Clamp Gauge Hatch

For terminal operators, custody-transfer engineers, and inspection teams, the Shand & Jurs 95021 Quick-Clamp Gauge Hatch provides pressure-compatible manual gauging and sampling access on tanks operating above atmospheric pressure, returning the tank to a defined sealed condition after every access event.

Unlike screw-down hatches that depend on operator tightening and drift toward chronic leakage as compression varies shift to shift, the 95021 uses a cam-actuated Quick-Clamp mechanism that applies repeatable, mechanically defined compression to a flexible diaphragm seal up to 3 PSIG.

A hinged cover allows controlled opening without abrupt pressure equalization, and a foot-actuated opening arm lets operators access the tank without removing gloves or tools during routine procedures. Multi-material construction supports petroleum, chemical, and wastewater service.

Available in 4″ through 12″ sizes with ANSI Class 150 or EN PN16 connections, the 95021 fits working storage tanks where frequent access must coexist with stable pressure behavior and consistent vapor containment.

Shand & Jurs 95021
Shand & Jurs 95021 Quick-Clamp Gauge Hatch
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Features

Cam-Actuated Quick-Clamp

Applies uniform sealing load independent of operator tightening, restoring stable tank pressure behavior after each gauging event without shift-to-shift variability.

Hinged Controlled-Opening Cover

Prevents abrupt pressure equalization during access, avoiding disturbance of conservation vent operation and limiting vapor release during routine inspection.

Flexible Diaphragm Seal

Maintains reseal integrity after repeated opening cycles, delivering consistent vapor containment across the service life of the hatch.

Foot-Actuated Opening Arm

Allows hands-free access while maintaining PPE and tool handling, reducing procedural delays during inspection rounds at terminal and custody-transfer sites.

Pressure-Rated Closure

Rated to 3 PSIG clamped, suitable for pressure-controlled atmospheric tanks where standard thief hatches would leak continuously above nominal breathing pressure.

Multi-Material Construction

Aluminum, carbon steel, or 316 stainless steel bodies with FEP, FKM, NBR, EPDM, or TCF diaphragms match petroleum, chemical, and wastewater service requirements.

Applications

  • Manual Tank Gauging: Supports daily dip-and-sample procedures on working storage tanks while maintaining the pressure stability that conservation vent sizing depends on.
  • Product Sampling: Provides repeatable thief sampling access on pressurized and blanketed tanks where a leaking hatch would drive chronic fugitive emissions.
  • Custody Transfer Tanks: Fits tanks where operator gauging accuracy and emissions accountability must coexist, limiting vapor release during each transfer audit.
  • Additive Injection Tanks: Suits smaller tanks carrying higher-value or higher-volatility stocks where leaking hatches drive disproportionate product and emissions loss.
  • Cold-Weather Terminals: Foot-actuated operation allows access in heavy PPE and gloves, avoiding the operator shortcuts that drive inconsistent sealing at screw-down hatches.
  • Frequent Inspection Service: Handles high-cycle gauging and inspection routines without the compression drift that drives fugitive emissions at operator-torqued hatch designs.
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Specifications

Parameter

Specification

Device Type

Gauge hatch

Maximum Working Pressure

3 psig (clamped)

Nominal Sizes

4″, 6″, 8″, 10″, 12″

Connection Types

ANSI 150 RF (Standard); FF available; EN1092-1 PN16

Sealing Method

Flexible diaphragm

Clamping Types

Quick-Clamp (Standard); Screw-down or Unclamped available

Operation

Foot-actuated or manual

Body & Cover Materials

Aluminum, Carbon Steel, 316 Stainless Steel

Diaphragm Materials

FEP, FKM, NBR, EPDM, TCF

Hardware

Stainless Steel

Options

Screw-down clamp cover; unclamped cover; locking provisions; ATEX configuration; S-hook sampler support

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If you have questions not covered here, please contact the Cognesense support team for assistance.

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How does the Quick-Clamp mechanism differ from a screw-down gauge hatch?

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A screw-down hatch depends on operator tightening, which drifts shift to shift and produces inconsistent sealing load. The 95021 uses a cam-actuated clamp that applies a mechanically defined compression to the diaphragm seal, removing operator-dependent sealing variability and restoring stable tank pressure behavior after every access event.

What pressure can the 95021 seal against?

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The hatch is rated to 3 PSIG clamped, making it suitable for pressure-controlled atmospheric tanks and pressure-compatible working storage. Standard thief hatches leak continuously above nominal breathing pressure; the 95021 maintains vapor-tight closure across the working range.

Why does foot-actuated operation matter?

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In cold weather and at sites where operators work in heavy PPE, removing gloves or setting down tools to open a hatch drives procedural shortcuts that leave hatches improperly sealed. The foot-actuated opening arm lets operators access the tank hands-free, reducing inspection time and preserving sealing discipline.

Which services is the 95021 suited for?

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With body material options in aluminum, carbon steel, and 316 stainless steel and diaphragm options in FEP, FKM, NBR, EPDM, and TCF, the 95021 covers petroleum, chemical, and wastewater tanks. Material selection is specified at time of order based on stored product and vapor-space conditions.

Is an ATEX configuration available?

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Yes. An ATEX option provides spark-resistant design features for installation in classified areas. Locking provisions, an S-hook sampler support, and alternative screw-down or unclamped cover configurations are also available.

How does the 95021 compare to the 95050?

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The 95050 is a separate pressure-compatible gauge hatch in the 95000 Series with its own dedicated datasheet. Selection between the 95021 and 95050 depends on tank operating pressure, connection type, and the preferred clamping mechanism — Cognesense applications support can assist.

Summary

With over a century of tank-safety heritage inside Cognesense, the Shand & Jurs 95021 Quick-Clamp Gauge Hatch is chosen when tanks operate above atmospheric pressure and operator-dependent sealing variability would drive chronic fugitive emissions. Its cam-actuated clamp, flexible diaphragm seal, and hinged controlled-opening cover restore the tank to a defined sealed condition after each gauging event. Across working petroleum tanks, custody-transfer service, and pressure-controlled chemical storage, the 95021 is trusted wherever you need to measure, monitor, and protect what matters most.

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