Features and Applications of Globe Valves
Conventional globe valves may be used for isolation and throttling services. Although these valves exhibit slightly higher pressure drops than straight- through valves (e.g., gate, plug, ball, etc.), they may be used where the pressure drop through the valve is not a controlling factor. Globe valves are extensively employed to control flow. The range of flow control, pressure drop, and duty must be considered in the design of the valve to avert premature failure and to assure satisfactory service. Valves subjected to high-differential pressure-throttling service require specially designed valve trim. Generally the maximum differential pressure across the valve disc should not exceed 20 percent of the maximum upstream pressure or 200 psi (1380 kPa), whichever is less. Valves with special trim may be designed for applications exceeding these differential pressure limits. Forged steel A105 Globe valve socket flange end Types of Globe Valves Tee Pattern globe valves have the lowest co