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Masoneilan* 78400/18400 Series LincolnLog Valve

 

The Masoneilan LincolnLog* valve features an axial flow design that uses a tortuous path to distribute pressure drop along the axis of the plug to reduce cavitation. 


It offers multi-stage pressure letdown control with excellent trash tolerance for a long-term solution in critical service applications. The LincolnLog is well suited for high-pressure liquid letdown applications where cavitation and dirty fluids are major concerns. 

 
 
 
 
 
 
   

 

 

 

Features & Benefits

               
                   
• Axial stages throttle in unison as the plug strokes maintaining staging ratios at all lift points to control velocity and pressure drop resulting in reduced cavitation trim damage
 
 
• Large flow passages enables entrained solids in severe and dirty service fluids to pass through without damage
 
 
 
• Rugged construction for long-term operation in harsh conditions and improved process uptime
   
• Heavy continuous trim guiding offers smooth operation at all travels
   
   
• Single-piece plug and liner components for added reliability and easy field service
   
 

• Low part count for efficient operation and reduced inventory and maintenance costs

   
 
 
 
                   
Application :
                 
 

The Masoneilan LincolnLog severe service valve is configured for high-pressure liquid letdown applications with pressure drops up to 450 bar (6500 psi) where cavitation and dirty fluids are major concerns including:

 

• Pump recirculation

• Feedpump start

• Spray water control

• Water reinjection

• Separator letdown

• Boiler feedwatern

• Desuperheater

 
 
Regional Considerations
 
ASME B16.34 design
PED compliant
                   
Design
                 
                   
The LincolnLog offers cavitation control in demanding applications by combining effective design characteristics such as:
                 
• Large flow areas
• Top entry construction
• Advanced trim design
• Minimum number of parts
                   
Spesification
                 

 

Sizes: 
1" through 12" (25 through 300 mm)

 

Ratings: 
ASME B16.34 Class 600-2500

 

End Connections:

BWE per ASME B16.25 
Flanged per ASME B16.5

 

Body Materials: 
Carbon steel 
Stainless steel 
Chrome-moly

 

Actuator: 
Model 37/38 spring-opposed diaphragm 
Model 87/88 multi-spring-opposed diaphragm 
Cylinder actuators

 

Trim: 
Multi-stage, cage guided, anti-cavitation trim 
Axial flow technology 
Optional Class VI shut-off

 

Inherent Characteristics: 
Linear

 

 

                 
                   
Customization

 

The LincolnLog is available in standard designs to meet a wide range of high-pressure, anti-cavitation applications in both globe and angle body options. The LincolnLog is also available in various optional configurations such as:

 

• Globe and angle body configurations

• Wide range of body and trim materials

• Soft seat design for bubble tight shut-off

• Cryogenic construction