Tender For air vaccum brake system safety valve type e1 to clw drg. no. 4d/be 208 & test spec. no.ts/brake/05-408 for ng locos (3/4" safety vlave set at 8.5 kg/cm2 brass body) note- test certificate and warranty certificate to be submitted by the firm during the supply of the material. [ warranty period: 30 months after the date of delivery ]