Masoneilan* 21000 Series Top-Guided Globe Control Valve


The Masoneilan 10000 Series double-seated control valve combines excellent high pressure drop control performance along with the ability to handle dirty fluid applications.  The dual port design provides a pressure balanced effect within the valve, which reduces actuator size and thrust requirements. 




Features & Benefits

• Robust construction supports long-term smooth operation helping to enhance process uptime
• Versatility of options reduces inventory and training and meets a wide range of application requirements in a variety of industries
• Heavy top-guiding offers excellent support resulting in improved process control and higher process yieldsthroughout the entire operating range
• Low part count and simple construction provide ease of operation and maintenance
Reliable performance with standard solutions to control noise, cavitation, and valve leakage improving plant operating efficiency

• Commonality of parts with the Masoneilan 80000 Series three-way control valve helps reduce onsite inventory


Application :

The Masoneilan 21000 Series control valve is designed to handle a wide range of applications across various industries. It is well-suited for control loops with typical service conditions and operating requirements as follows:


• Clean and dirty process fluids

• Moderate to high pressure drops

• Tight shutoff seat leakage

• High noise gas applications

• Cavitating & flashing liquid applications

• Low emissions and zero leakage options

• Low temperature and cryogenic applications

The Masoneilan 21000 Series is a robust design providing many standard options within a common valve platform. Customers benefit with a simple, flexible, and field-proven concept that is easy to install, operate and maintain.
• Heavy top-guided construction provides excellent alignment for reliable valve operation
• Low emissions packing option reduces external leakage to atmosphere to meet environmental regulations
• Bellows seal construction provides zero leakage performance for toxic or lethal fluid applications
• Low noise and anti-cavitation trim options effectively minimizes the impact to the environment and valve integrity


3/4" through 8" (20 through 200 mm)


Ratings and Connections: 
Flanged: ASME 150 – 2500 UNI-DIN 20 – 420 
Welded: BW or SW 
Screwed: NPT 3/4" through 2" (20 through 50 mm)


Body Materials: 
Carbon steel 
Stainless steel 


Model 87/88 multi-spring diaphragm


Single seat plug top guided. 
Lo-dB and anti-cavitation trims, single or double stage are available


Inherent Flow Characteristics: 
Linear or equal percentage