supply of pressurised flushing system spares , s.s nozzle one side threaded another side tapered 3/4 x 1/2 length 70 mm of material aisi 304 suitable for hose pipe used in electro pneumatic pressurised flushing system of lhb coaches [ warran ty period: 30 months after the date of delivery ] ] , supply of nrv3/4 bsp (f) x 3/4 bsp (m) outlet suitable and able to fit in existing pressurize d flush system of lhb coaches. [ warranty period: 30 months after the date of delivery ] ] , supply of nrv3/4 bsp (f) x 3/4 bsp (f) outlet similar to imi or equivalent suitable note: equi valent means it should be in same shape and size, material, and able to fit in existing pressurized flush sys tem of lhb coaches. [ warranty period: 30 months after the date of delivery ] ] , stainless steel high pressure adjustable non return valve (nrv for air ) , both ends - interna l screwed type, size: 1/4 bsp, length =50 to 55 mm and pressure = 10 to 12 bar. , material: ss 304 or 31 6 suitable to pressurised flushing system [ warranty period: 30 months after the date of delivery ] ]