Biogas Blowers, based on Positive Displacement Rotary Blower principle, have been specially developed for pumping and conveying bio gas. These biogas blowers are generally used in biogas lines to boost the gas pressures to meet the burner input demand. These biogas and specialty gas blowers are generally vertical in construction (i.e. the suction end is at the top and discharge is at the bottom) so as to prevent any accumulation of corrosive matter inside the casing. Since they operate in a closed- loop, suction and discharge silencers are generally not required. Special material of construction, lubrication and sealing arrangements make them an ideal choice for biogas applications.