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C-Series

Customizable isolation valves for specific applications

ASME 150 – 4500 Class: Dependable Isolation

The C-Series valve is the best choice in large bore isolation applications. MOGAS engineers have successfully designed the C-Series valve line which isolates under the extreme conditions – high temperature up to 1652°F (900°C), high pressures up to 43,000 psig (2965 bar g), media build-up, cycling with solids in the line and erosive attack of materials and coatings. With more than 40 years of engineering expertise, each C-Series valve is designed specifically for the application.

Each ball and seat subassembly is mate-lapped by hand and put through a rigorous testing procedure to ensure its integrity. The C-Series valve is available in full or reduced bore, ½ inch to 42 inches and in a wide variety of end connections.

• Features & Benefits
• Applications
• Downloads

1

CloseAccepts floating ball or trunnion ball design

• Rotating ball does not displace volume or solids
• Straight-through bore path protects sealing surfaces

2

ClosePressure-energized sealing

• Seat springs maintain constant sealing contact between ball and seats
• Allows for thermal expansion of trim
• Metal seats wipe sealing surface of ball clean during operation

3

CloseWide seat sealing surface

• Matched ball and seat sets provide total sealing contact for reliable isolation
• Greater sealing contact area withstands minor scratches or abrasions

4

CloseIndependent replaceable seats

• Minimizes maintenance and repair costs

5

CloseBlowout-proof stem design

• One-piece design meets industry safety standards
• Withstands severe service torques and maximum working pressures

6

CloseDual-guided stem design

• Pressure-energized inner stem seals serve as thrust bearing and lower stem guide
• Valve stem bushing serves as upper stem guide
• Eliminates lateral movement of valve stem
• Prevents media migration
• Prevents stem packing leaks and risk of fugitive emissions

7

CloseBody & end connections

• Greater wall thickness in critical areas provides longer valve life
• Cast or forged; 2 or 3-piece designs

8

CloseHeavy-duty mounting flange

• Machined after attaching to ensure precise stem alignment
• Provides structural support for operator mounting
• Provides visual inspection for confirmation of ball position

4

CloseIndependent replaceable seats

• Minimizes maintenance and repair costs

7

CloseForged body & end connections

• Greater wall thickness in critical areas provides longer valve life
• 2 or 3-piece designs

6

CloseDual-guided stem design

• Pressure-energized inner stem seals serve as thrust bearing and lower stem guide
• Valve stem bushing serves as upper stem guide
• Eliminates lateral movement of valve stem
• Prevents media migration
• Prevents stem packing leaks and risk of fugitive emissions

Application Specific Features

Seat designs

Engineered for maximum performance in application-specific conditions

Live-loaded packing

• Ensures constant packing energization
• Prevents stem packing leaks and risk of fugitive emissions

Body Gaskets

Pressure energized body gasket available to meet industry codes.

Materials

• Application-specific materials available, including exotics
• Extends valve life

Coatings

Application-specific coatings provide enhanced erosion and corrosion resistance

Liners and inlays

Liners and inlays can be applied to the through-bore or wetted surfaces

Purge ports

Purge ports are available

End connections

Available end connections include flanged, welded, hub/clamp or RTJ

Power Generation

• Control valve isolation
• Main steam isolation
• Feedwater heater isolation
• Boiler feed pump isolation
• Economizer isolation
• Bottom ash isolation
• Isolation applications

Mining

• Autoclaves
• Slurry transport

Refining

• Catalyst slurry handling
• Coal slurry handling / ash removal
• Heavy oil units
• Hydrogen isolation
• Hydrotreating units
• Isolation in coker units
• Isolation in FCCU applications

Petrochemical / Chemical

• Acetic acid handling
• Catalyst handling
• DOWTHERM^TM handling
• Gas furnace isolation
• Lethal services
• Polyethylene isolation
• Polypropylene isolation

• Data Sheet - C-Series Components
• Data Sheet - C-Series Features & Benefits (EN)
• Data Sheet - C-Series Features & Benefits (ES)
• Data Sheet - C-Series Features & Benefits (CN)
• Data Sheet - C-Series Dimensions
• Data Sheet - C-Series AMSE 150 to 4500 Class (EN)
• Data Sheet - C-Series AMSE 150 to 4500 Class (ES)
• Data Sheet - C-Series AMSE 150 to 4500 Class (CN)