Masoneilan* 71000 Series Erosive Service Valve


The 71000 Series is a modified sweep angle valve specifically used for severe service applications with highly erosive process fluids. The contoured body shape combined with hardened trim materials offers a solution for single or multi- phase flows with entrained solids. The 71000 Series includes a rugged top-guiding design to resist vibration associated with high-pressure letdown or multi-phase service.




Features & Benefits

• Sweep angle design reduces fluid impingement through the body to offer high resistance to erosion damage
• The streamlined angle body offers high resistance to this type of erosion damage.
• Heavy guiding withstands harsh operation
• Large streamlined flow paths allow the safe passage of entrained particles through the control valve for improved process uptime
•Anti-erosive valve geometry combined with durable materials reduces operating and maintenance costs related to inventory requirements and trim or valve replacements
Application :

The 71000 Series is for severely erosive applications such as:


• Visbreaker

• Hot hydrocarbon fluid

• Coking applications


The Masoneilan 71000 Series valve features a strategically contoured and angled internal flow stream to reduce entrained particulate impingement, and resulting erosion, on the valve body walls or trim components. Also hardened trim materials on the valve plug and seat offer further erosion resistance for key valve components.

2" x 3" through 10" x 12" (50 x 80 mm through 250 x 300 mm) 

Ratings and Connections:
Flanged: ANSI 150 - 2500 

Body Materials:
Carbon steel 
Stainless steel 


Model 87/88 multi-spring-opposed diaphragm 
Cylinder actuators 

Heavy top plug guiding coupled with a threaded seat ring design to form an outlet Venturi flow path for outlet area protection 

Inherent Characteristic:





The Masoneilan 71000 Series utilizes specialty materials to provide high hardness on critical surface. Trim components are available in a wide variety of rugged materials including:
• Stellite

• Tungsten

• Carbide

• Ceramics