Single seated globe control valve

Single seated globe control valve

Overview of Single seated globe control valve

Single seated globe control valve has a valve core and a valve seat in the valve body, which has the characteristics of small leakage. The valve has large unbalanced force, and its allowable differential pressure is smaller than that of the double seat valve. When the high pressure difference and large diameter, it is best to be equipped with a valve positioner. The valve with nominal diameter ≥ 25mm is a double guide structure. Air opening or air closing can be realized as long as the connection position between the valve stem and the valve core is changed.

Structural parameters of Single seated globe control valve

There is only one valve core and valve seat in the valve body of the Single seated globe control valve. When DN ≥ 25, the valve core is double guide (now the fine and small single seat regulating valve has been changed to single guide); When DN ≤ 25, the valve core is single guide. The valve was produced abroad in the 1940s and jointly designed at home in the 1960s. Its characteristics are as follows:

① Since there is only one valve core, it is easy to ensure sealing and small leakage, but it can not be completely cut off. The standard leakage is 0.01% kV, so it is suitable for occasions with small leakage requirements. When it is further designed, it can be used as a shut-off valve.

② Because there is only one valve core, the unbalanced thrust generated by the differential pressure on the valve core is large. Set the pressure in front of the valve as P1, the pressure behind the valve as P2, the diameter of the valve stem as DS and the diameter of the valve seat as DG.

Main tech of Single seated globe control valve

Model: XF61

Structure: Globe control valve, sliding stem

Size: DN15～DN250

Rating: PN16~PN63 (CL150~CL600)

Body: WCB, CF8, CF8M, CF3,CF3M

Trim: 304SS, 316SS, 316LSS

Actuator: Multi-spring pneumatic diaphragm

Accessries: Positioner, air fliter. etc

Note: Any special design or question of  Single seated globe control valve， kindly contact the manufacturer for more details.