A hydraulic gas pump is a type of pump that uses gas as the power source to drive a hydraulic system. The hydraulic pump creates a flow of pressurized hydraulic fluid, which is stored in the reservoir. The relief valve regulates the pressure of the hydraulic system and prevents it from exceeding a safe limit. . Specification: Specially design for wooden fittings, Different forces for the same dimensions, High Durability, Long life, Oil incorporated for cushioning & seal lubrication different fixing end-connection. Application: For easy opening of all type of cabinet doors.