Free Vents | Gauge Hatches | Rim Vents - Motherwell Tank Protection

Tank Fittings

Free Vents | Gauge Hatches | Rim Vents

We supply a complete range of accessories and storage tank fittings for your storage tank which include:

Free Vents
Rim Vents
Gauge Hatches

All of which are available in a range of sizes and metals giving you the most extensive range available to the storage tank industry.

With over 40 years experience our storage tank fittings are always of the highest quality, and with one of the largest available ranges of tank fittings you are sure to find the tank fitting you need.

Tank Free Vents

Motherwell’s CNC 240/241 Free Vents prevent pressure buildup in tanks, available in sizes 2″-12″. Made from durable materials, with stainless steel screens and ANSI/DIN flanges for reliable airflow.

Rim Vent

Motherwell’s CNC 104 Rim Vents offer low-pressure relief for floating roof tanks. Made from aluminum with a stainless steel screen, they open at 0.865” w.g. to release excess air/gas pressure.

CNC 101 Atmospheric Gauge Hatch

CNC 101 Series Gauge Hatches provide tank access where manual level gauging, temperature measurement or sampling is required.

CNC 102 Lockable Gauge Hatch

CNC 102 Series of lockable Gauge Hatches provide secure tank access for manual level measurement, temperature or sampling is required together with a gas tight seal to 2.5psig.

CNC 103 Combination Gauge Hatch

CNC 103 Combination Gauge Hatches are a combined unit allowing access for manual level gauging or sampling and providing pressure & vacuum relief

Combined Free Vents & Sampling Hatch

CNC 141 Series Free Vents provide easy tank access for sampling or dipping tank contents whilst allowing the tank to vent safely through the weatherhood.

Tank Fittings