WATERRO MEMBRANE HOUSING MODEL: 4040-FRP THREAD (450 PSI) WATERRO 4040-FRP THREAD (450 PSI) membrane housing is a glass-fibre-reinforced plastic (FRP) membrane housing for standard 4" × 40" reverse osmosis membranes. It provides high mechanical strength, excellent corrosion resistance and a long service life. The housing is designed to operate at a maximum working pressure of 450 PSI (31 Bar) and is equipped with a threaded end connection for secure installation. Technical specifications Parameter Value Product FRP RO membrane housing Model 4040-FRP THREAD Housing size 4040 (4" × 40") Compatible membrane Standard 4040 RO membrane Material Glass-fibre-reinforced plastic (FRP) Housing type Threaded Maximum working pressure 450 PSI (31 Bar) Connection type Threaded Number of membranes 1 Application Commercial and industrial RO systems Brand WATERRO Key benefits FRP construction Designed for standard 4040 RO membranes 450 PSI maximum working pressure High resistance to corrosion and chemicals Lightweight and durable housing Threaded construction Secure leak-tight seal Suitable for RO, NF and UF systems