Treloar Products

Specialty fluid handling products to support your chemical, petroleum and process solution requirements. 

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  • Tank Truck Equipment
  • Service Station Equipment
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  • Terminal & Depot Equipment
  • Fluid Transfer Fittings
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Order codes Spares

MC407 - C/W PLUG

MC407V - C/W PVV




MC407K - Spares kit no PVV

MC407VK - Spares kit with PVV

R802067-703 - Gasket Tank Flange (Viton)

R802092-701 - Fill hatch seal (Nitrile)

R802072-701 - Seal coaming (Nitrile)


The MC407 was the original multipurpose manway for use on the road tank vehicles for dangerous goods. The design incorporates a 170mm inspection hatch/emergency vent, pressure and vacuum vents, free vent and openings for dip, fill, vapour transfer vent and overfill protection probe. The complete assembly has been tested and approved in accordance with the requirements of AS2809.2-1999 for small compartment tanks.


The frame is attached to the coaming by means of a steel Clampband, secured by a single bolt and nut. (Clampband is part of the manway assembly). The coaming is available in aluminium or mild steel, a location lug and notch is provided to ensure correct location when refitting the hatch after service. A two step catch relieves built up pressure when releasing the inspection hatch, thus protecting the operator from injury. A rollover protection device is housed in the P&V Vent to completely shut off the vent in the event of a tank rollover. No further venting occurs until the emergency vent opens. P&V Vent assembly can be unscrewed for ease of maintenance. Manway assembly can be used for top loading and later converted to bottom loading (fitting of overfill protection and vapour vent) with no hot work required.


PV Vent pressure relief = 16 ± 1 kPa
PV Vent vacuum relief = 2 ± 1 kPa
Emergency Vent relief pressure = 30 ± 3 kPa
Emergency Vent capacity = 5500m3 per hour at 45 kPa
(suitable for 23m2 exposed tank compartment area)

Latest news

Sep 29, 2020
Welcome to our new digital home
As you may have noticed, things have changed a little bit around here.  

Sep 28, 2020
Project: Loading Arm for Propylene Glycol (PGI)
This was a loading arm for Propylene Glycol (PGI), the customer needed it in a very short lead-time and we were able to deliver. Typically, this type of arm would take us 8-10 weeks as they are manufactured to order in our workshop, but we were able to deliver in just 6 weeks including painting and ...

Sep 27, 2020
Industry coupling offers LNG innovations
Treloar Trading and its international partner ARTA are offering the global market new LNG products, including gas dry break and breakaway coupling technology as well as cryogenic equipment for loading and unloading. LNG is a global commodity accounting for a significant percentage of worldwide gas ...