Vacuum Techniques Pvt. Ltd. Manufactures Plasma Nitriding Coating System. Vacuum Techniques Pvt. Ltd. Is an ISO 9001:2000 certified company. Vacuum Techniques Pvt. Ltd. Offers Vacuum Instruments, Vacuum Components, and Custom Built Systems. The Plasma Nitriding Coating System essentially consist of chamber made of SS 304 material with required number of ports, a mounting stand to mount the chamber, hydraulic lifting mechanism to lift the whole chamber from base plate assembly, a pumping system consisting of Roots Blower and a suitable Rotary Pump to achieve a ultimate vacuum of 10-3 mbar.