Product Handbook 2026 - Volume 1

Compressed air products Isolation valves, drain traps and ancillaries

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Local regulations may restrict the use of this product to below the conditions quoted. In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2011

TI-P504-23 CH Issue 2

Dri-Line Mk3 Monnier Compressed Air Drain Trap

Description The Monnier Dri-Line Mk3 is an automatic float actuated drain used to drain air line drain legs and filters. It is a normally open valve that is rated for use up to 17 bar g and 80 °C. The valve is held closed by line pressure. The pilot valve is never submerged in water, and its discharge is operated by system air pressure, producing a strong on-off action. The float which is extremely light, can't leak or hold fluid. All parts are corrosion proof. The unit has a manual override to check proper functioning. Discharge is easily piped to remote locations. When the compressed air system is shut down, the valve returns to its normally open condition and water will drain away by gravity. Principal features:

- Blast action discharge. - High discharge capacity. - Built-in strainer screen. - Discharge can be piped to drain. - Black anodised finish - internal and external.

5.5 79

Sizes and pipe connections ½" screwed BSP (BS 21 - Rp).

Optional extras Discharge tube adaptor: to accept " o/d copper or plastic tube to discharge condensate to drain facility.

Operating limits Maximum working pressure

17 bar g

9.5.72

Minimum operating pressure

0.1 bar g

Maximum working temperature

80 °C

Maximum discharge capacity

20 L/h @ 6 bar

Materials Part

Material

Body

Anodised aluminium

LM25WP

Autodrain mechanism Acetal plastic / Stainless steel Strainer screen 0.8 mm perforated

316L

'O' ring

Nitrile

TI-P504-23 CH Issue 2

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Dri-Line Mk3 Monnier Compressed Air Drain Trap

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