Top guided plug with contoured smooth flow face offers good flow capacity, high precision, meanwhile, flow pressure is resumable. It is suitable for application with low differential pressure. Seat is designed for sealing by pressing offering easy maintenance as it can be taken out for repair or replacement form top of body. Each valve size is designed with various Cv value trim. Soft seated trim can meet applications calling for emergency shut off with good tightness. Good controllability at small opening and good stability of flow characterizes. Special designed trim is available to meet requirements of application of application for noise reduction or cavitation resistance.