The stainless steel housing is designed to be used with reverse osmosis, nanofiltration and ultrafiltration applications. These RO housings fit standard 4" membranes and withstand pressures up to 250 PSI. 4" x21" has 1/2" NPT middle port and 1/2" NPT outside port. 4" x 40" has 1/2" NPT middle port and 3/4" NPT outside port.
Features:
Fits All Standard 4" Membranes
Made of 304 Stainless Steel
Will not be affected by UV Rays or Sunlight
More durable than PVC
Will not warp, crack, or weep like fiberglass (FRP housings equivalent in pressure rating)
Molded "U-Type" clamp closures provide a strong seal
