Format 30 Insulated Water Tanks

Current legislation

Format 30 is Nicholson Plastics description of tanks with Heavy Duty panel covers, complete with screened vents, overflows, warning pipes etc and having side wall and roof panels with a (u) value of 2.5 w/m2K, (tanks under 1m high have a slightly higher value). This value meets the requirements of section 30 of the water bye laws in the majority of situations. Water tanks in boiler rooms etc may also need base insulation. The purchaser can specify extra requirements or thermal transmittance after considering the period of protection necessary, the tank location and the surrounding conditions.

Please Note: Insulated water tanks slow down but do not prevent heat loss or gain over protracted periods. Additional information is available in BS 7491 & BS 6700.

Format 30 Fittings 

Screened air inlet vent 

There are different types of air vents available. One of these is to be fitted to the lid in every Heavy Cover and Format 30 Tank, the hole for the vent will be pre-drilled in the lid panel. Larger insulated water tanks may require more than one vent. Tanks with dividers to roof will require two number vents. Note: During commissioning the air inlet vent should be checked to ensure that it is attached correctly to the
tank.