The Mainsboost MB 130SV features a nominal vessel size of 130 litres and a pressurised water holding capacity of approximately 71 litres. Each unit is supplied with a comprehensive Upstream Line-In Kit (ULK) featuring 22 mm pipe diameter fittings. Constructed from an epoxy coated steel body and a highly durable virgin butyl diaphragm, all Mainsboost vessels are WRAS Approved and come with a 5 year guarantee.