procurement of spare parts of 06 kg capacity dry chemical powder fire extinguisher as per bis 15683 at sgtps mppgcl birsinghpur procurement of spare parts of 06 kg capacity dry chemical powder fire extinguisher as per bis 15683 at sgtps mppgcl birsinghpur , superior quality squeeze grip piercing mechanism gun metal cap with nickel chromium plated suitable for dry chemical powder fire extinguishers cap. 6 kg with safety holes and in-out tubes complete for syphon and discharge. cap thread length 25 mm approx cap id 75 mm approx for fixing l.h.s. ( close ) gas cartridge as per is- 15683. , safety pin , discharge hose with nozzle , cap washer ( rubber ) / o-ring