Philmac Non Return Valve 3/4"/ 20mm tube feeding a baby calf The outlet cap has moulded

The outlet cap has moulded

They were designed in the USA by an avid gardener

The answer is each is a product of fermentation

97m wide x 4cm thick

Philmac Non Return Valve 3/4"/ 20mm tube feeding a baby calf The outlet cap has mouldedPhilmac non return valves have been successfully servicing the Australian market for more than 20 years with a reputation for quality and reliability. Designed to allow water to flow in only one direction to avoid loss of water, prevent backflow and ensure pipelines do not drain. The valves have been designed to work in either vertical or horizontal position for flexible installation. Redesigned piston shaft minimises the wear on the piston