Dual-purpose throttle stop valve

The utility model provides a dual-purpose throttle stop valve which comprises a valve body, a valve seat, a throttle valve clack, a stop valve clack, a valve rod, a valve deck, stuffing and a hand wheel. The valve body and the valve deck are firmly connected together through double-screw bolts and nuts so that a valve cavity can be formed in the inner portion. The valve seat is arranged in the valve body. The hand wheel is arranged at the top end of the valve rod. The valve rod penetrates through the valve deck and extends inside the valve cavity. The bottom end of the valve rod is connected with the stop valve clack. The lower end of the stop valve clack is connected with the throttle valve clack. The throttle valve clack is arranged on the valve seat. A soft sealing ring is arranged between the stop valve clack and the throttle valve clack. A first O-type ring is arranged between the throttle valve clack and the valve seat. According to the dual-purpose throttle stop valve, a sealing face of each valve clac