PHV series two stage rotary oil lubricated vacuum pumps are designed for high vacuum industrial and laboratory applications, are air cooled, oil is automatically re-circulated by means of differential pressure and the vanes are non-metallic lasting over 30,000 working hours. Our rotary vane pumps feature extremely rugged construction, built-in oil mist eliminators for pollution-free discharge air and are coupled to an electric motor through flexible coupling. Our rotary vane vacuum pumps have been designed to meet the requirements of most OEM customers for various industrial applications, offers several advantages including compact size, minimal weight, gas ballast and check vales as standard components for quiet operation and easy of installation.