1/2" Air Strainer Type 'T' As Per Clw Drg. No. 0/2/65/440 & Clw Specn No. Clw/Ts/99 -90/0014. Each Unit Should Be Engraved With Makers Name, Month, Year & Batch No. Of Manu Facturing At A Conspicuous Place. [ Warranty Period: 30 Months After The Date Of Delivery ] ]