XSL600 series Single Seat Globe Pneumatic Control Valve

Features

Globe Control Valves

Globe Control Valves use linear motion to move the shutoff member in and out of the seat surface. Their bodies feature a spherical cavity around the port area and are designed to regulate process flow when used in conjunction with an actuator assembly. Many single-seat bodies use a cage, three-way or fixed construction to hold the seat ring in place, provide spool guidance, and provide a means of establishing specific valve flow characteristics. Caged or fixed single-seat bodies can also be easily modified by replacing the internals to change the flow characteristics or to provide reduced capacity flow, noise attenuation, or to reduce or eliminate cavitation

Performance advantages

Modular design concept, combining the American and Japanese schools of high-precision control and the German school of modular concept.

The inner cavity of the valve body is S-shaped distribution, smooth and without dead corners; the valve body has internal flow guide wings, which can reduce the mutual force of the medium inside the valve body and reduce the occurrence of cavitation.

Simple structure, less dead space in the internal globe control valve parts, reducing the possibility of crystallization and blockage of the medium.

The valve spool adopts upper guidance, which is smoothly guided.

The valve seat adopts floating design, while the sealing surface adopts tapered form to ensure good alignment of the sealing vice.

Spool type face control flow characteristics, accurate flow characteristics control.

Equivalent percentage, linear and fast-opening flow characteristics are available.

Temperature range of application span, -196 ~ 593 ℃ are available in the appropriate structure.

Leakage grade meets GB/T 17213.4-2005 / IEC 60534-4:1999, hard seal up to grade IV, V, fast-opening and soft seal up to grade VI; and pipeline connection with RF, RJ, FM and other flange types and SW, BW welding type.      

The flange distance conforms to GB/T 17213.3-2005 / IEC 60534-3-1:2000; or ISA S75.03-1992 standard.

Long Service Life

1. Valve Trims

According to the needs of the working conditions, different materials and surface hardening treatment can easily be chosen to meet the requirements of each function module of trim to improve its performance of the corrosion, cavitation and erosion resistant, lengthen service life.

2. Valve body

The body of LN8 series control valves consists of two passages from upper and lower, forming a shape like letter "S". The design of an elliptical section reduces the flow resistance and turbulent flow to keep the flow fluent. The flap in the middle of upper passage can reduce the eddy flow and increase the flow capacity.

3. pneumatic actuator of globe control valve

The standard mate of LN8 series is AM8 Multi-spring pneumatic diaphragm actuator, which can be used in many conditions with the features of strong output force, high reliability, long lifespan and extensive application. The output force changes with the number of springs. The high stress resistant diaphragm, bearing maximum pressure of 0.5 MPa air supply, gives control valve a reliable shutoff. This type of actuator has a long life cycle with more than 1 million times.