Honeywell STMDB manifold

Safety Back Seating of Stem

This function prevents accidental removal of the stem while in operation. When the tap is in the fully

opened position the stem produces a metal to metal secondary back seal, removing continuous pressure from the packing.

Anti Blow-Out Shaft

Reduces risk of injury as the shaft will be contained in the unlikely event of a shaft thread failure due to unforeseen circumstances.

Stem Seal below the Threads

This isolates the stem threads from the process media, preventing thread corrosion and keeps solids from entering the thread area which can cause galling. It also isolates the thread lubricant from the process, preventing process contamination as well as lubricant washout.

Bonnet Seal located below Threads

A metal to metal seal is utilized to provide a positive seal that maintains its effectiveness even at high temperatures. This seal is located below the bonnet threads isolating them from the process media.

Bonnet Lock Pin

All taps are secured by a Bonnet lock pin. These pins are machined from billet rather than using a roll pin. The result is a shouldered bonnet lock pin that is knurled on the insertion point.

Non-Rotating Trim

This stops galling or damage to the seat face by not allowing the trim to rotate while lifting off, and seating down on, the seating surface. For added security the trim is produced from billet rather than using a sphere (pure ball) as a ball does not have polarity. This ensures the trim can only rotate around the same axis as the stem.

Single Point Machined Threads

Produces high accuracy threads as opposed  to  tapping.

100% Pressure Tested

Each manifold is tested with nitrogen gas to a minimum of 750 psi. Hydrostatic testing at 1.5 x

MAWP is also available as an option.

External adjustment of packing seal

The stem seal can be easily adjusted insitu, without any disassembly of the valve or manifold.

Stem dust cap

Protects stem threads against contaminants in the atmosphere.

Color Coded Valve Function

Tap function easily identifiable through color coded dust caps.

Full Traceability

All components are fully traceable back to source.

Locknut

Ensures safe operation under high vibration conditions.

Seal Yoke

The high precision yoke provides good encapsulation and integrity of the stem seal.

Hidden Tap Handle Locating Screw

This improves the feel to the user when operating the tap as there are no sharp edges or protruding bolts.

Mirror Finish Burnished Stem Seal Surface

The face where the seal contacts the stem is burnished to a mirror like finish. This reduces

operating torque and extends the life of the seal.

Tap Assembly Tracker Code

All taps are assembled with a tracker code to ensure 100% traceability.

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