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Shand & Jurs 96181 Water Drain Valve

Dual-Seat Tank Water Drain Valve

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Shand & Jurs 96181 Water Drain Valve

For terminal operators, tank farm maintenance teams, and petroleum storage engineers, the Shand & Jurs 96181 Water Drain Valve is the positive-shutoff drain installed at the lowest tank connection, where liquid head pressure is always present and water must be drawn off without creating a continuous product release path.

Unlike a single-seat drain that relies on one sealing surface and leaves trapped liquid in the chamber after closure, the 96181 uses a dual-valve mechanism on a common stem: the inner valve seats first to stop product flow, the chamber empties, and the outer valve closes last — preventing trapped liquid that can freeze, corrode the seat, or bleed through over time.

Glass-filled PTFE seat discs give tight shutoff on both sealing surfaces, an internal protective sleeve shields the mechanism from debris, and a short handwheel stroke flushes contaminants from the inner seat without removing the valve from service.

Available in 2″, 3″, and 4″ sizes with threaded or flanged mounting, the 96181 supports routine water draw-off and condensate removal on petroleum storage, bulk terminals, and heated tanks where containment integrity after every drain cycle matters.

Shand & Jurs 96181
Shand & Jurs 96181 Water Drain Valve
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Features

Dual-Valve Common Stem

Inner valve seats first to stop product flow; the chamber empties before the outer valve closes, preventing trapped liquid and freeze damage.

Glass-Filled PTFE Seats

Dual sealing surfaces deliver tight shutoff on both the inner and outer valves, supporting reliable containment after every draining cycle.

Internal Debris Sleeve

A protective sleeve inside the valve body shields sealing surfaces from particulate, preventing chronic seepage caused by contamination on the seats.

Flush-Action Handwheel

A short handwheel stroke flushes contaminants from the inner seat without disassembly, restoring tight shutoff between scheduled service intervals.

Serviceable Outer Valve

The outer valve can be serviced in place without removing the valve body from the tank, reducing maintenance downtime during routine intervention.

Locking Provision

Integral lockout prevents unauthorized opening of the drain, supporting site safety procedures and tank security on regulated terminals and bulk storage.

Applications

  • Tank Bottoms: Installed at the lowest tank connection for positive shutoff against continuous head pressure on atmospheric and low-pressure storage tanks.
  • Water Draw-Off: Supports routine removal of accumulated water from petroleum and chemical tanks without creating a continuous product release path to atmosphere.
  • Condensate Removal: Drains condensate that accumulates at tank bottoms on blanketed or vapor-managed storage, supporting product quality and corrosion control.
  • Petroleum Storage: Glass-filled PTFE seats and internal debris sleeve handle hydrocarbon service cleanly, restoring tight shutoff between draining cycles on crude and refined product.
  • Bulk Terminals: Serviceable in place and lockable, supporting high-throughput terminal operations where every tank requires routine water draw-off without extended downtime.
  • Heated Tanks: Sequenced chamber-draining closure prevents trapped liquid that can solidify or freeze on heated-product tanks during shutdown or cold weather.
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Specifications

Parameter

Specification

Device Type

Tank water drain valve

Sizes

2″, 3″, 4″

Mounting Flanges

NPT or ANSI flange (1 to 3 sizes larger than valve, consult ordering guide)

Maximum Pressure

50 PSIG

Maximum Temperature

250°F (121°C)

Operation

Manual handwheel

Body

Steel with stainless seat overlay

Seat Disc

Glass-filled PTFE

Stem Seal

Nylon / Buna-N

Outlet Elbow

Ductile iron

Hardware

Stainless steel stem, spring, and groove pin. Brass seat retainer and coupling (stainless steel optional). Aluminum handwheel.

Options

Stainless steel internals; oversized mounting flange; in-tank piping adapter; padlock provision; auxiliary discharge connection; stainless steel seat retainer and coupling.

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

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Why does the 96181 use a dual-valve design instead of a single seat?

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A single-seat drain stops flow at one sealing surface and leaves the valve chamber full of product or water after closure. That trapped liquid can freeze in cold weather, corrode the seat, or bleed through over time. The 96181 inner valve closes first to stop product flow, the chamber then empties, and the outer valve closes last — preventing trapped liquid and restoring full containment at two sealing surfaces.

What service conditions is the 96181 rated for?

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Maximum working pressure is 50 PSIG and maximum temperature is 250°F (121°C). The valve is available in 2″, 3″, and 4″ sizes with NPT or ANSI flanged mounting one to three sizes larger than the nominal valve size — consult the ordering guide for the correct flange selection.

How is the 96181 cleared if debris reaches the seat?

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A flush-action handwheel stroke clears particles from the inner seat without removing the valve from service. An internal protective sleeve shields the sealing surfaces from debris during normal operation, and the outer valve can be serviced in place for deeper cleaning or seat replacement.

Can the valve be locked to prevent unauthorized opening?

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Yes. A locking provision is standard, and a padlock provision is available as an option for sites that require lockout-tagout procedures on tank drains. Locking the handwheel prevents accidental or unauthorized opening of the drain connection on regulated terminals.

What materials are available for corrosive or aggressive service?

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Stainless steel internals are available as an option for full corrosion resistance, along with a stainless steel seat retainer and coupling upgrade. The standard body is steel with a stainless seat overlay, seat discs are glass-filled PTFE, and stem seals are nylon / Buna-N. Specify service conditions at time of order.

Can the valve connect directly to recovery or discharge piping?

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Yes. An auxiliary discharge connection is available as an option, allowing direct connection of the stem seal to discharge piping or recovery equipment. An in-tank piping adapter is also available to connect the valve to an internal sump or suction line.

Summary

With over a century of tank-safety heritage inside Cognesense, the Shand & Jurs 96181 Water Drain Valve is the positive-shutoff drain trusted to restore containment after every water draw-off cycle. Its sequenced dual-valve mechanism on a common stem empties the chamber before final closure, preventing trapped liquid, freezing, and debris-related seepage while maintaining tight shutoff at two sealing surfaces. On petroleum storage, bulk terminals, and heated tanks alike, it is chosen wherever operators need to measure, monitor, and protect what matters most.

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Measure.
Monitor.
Protect.