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Carbon/Graphite Seated Valves

Valves PBM

Carbon/Graphite Seated Valves are designed for high-temperature liquid applications. They are ideal for high flow situations that might distort or tear seats made of other materials. Carbon/graphite’s natural characteristics create a low-friction film that prevents overheating if the interface becomes dry. The material is nearly chemically inert and self-lubricating.

Specifications
Technical Data
Advantages
Industries
Applications
Documents
Contact

Specifications

Temperature Range: Up to 700°F

Valve Styles: Two-way, Flush Tank, ANSI, Diverter Port, Multi-Port

Sizes:

1/2″ – 8″ for 2-way and Flush Tank Valves
1/2″ – 6″ for Diverter Port Ball Valves and AN Series Ball Valves
1/2″ – 6″ for Multi-Port Ball Valves

End Fittings: Threaded, welded, 150# and 300# flanged

Ratings: Up to 650 psig at 700°F

Materials: Carbon/Graphite, 316 S/S, Carbon Steel, and other alloys

Stem Packing: Die-molded graphite

Body Seals: Metal O-ring or graphite gasket

Technical Data

Testing: Seats tested with water to meet ANSI/FCI 70-2 Class V requirements
Cycle Test: Passed 10,000-cycle hot oil test at 650°F
Stem Material: Select sizes include special 17-4PH stainless steel
Extended Stem/Bracket: Available for manual and actuated valves for high-temperature insulation

Advantages

Temperature Stability: Performs well in temperature swings from start-up to 700°F
Chemical Stability: Chemically inert in most environments, except strongly oxidizing ones
No Swelling: Does not swell when exposed to fluids, unlike some polymer-based seals
Low Friction: Creates a low-friction film to prevent overheating and damage
Favorable Expansion Rates: Expands less than surrounding metal, reducing torque build-up
Live-loaded Stem Packing: Increases stability in temperature swing applications
Custom Features: Options for extended stems and brackets for insulation

Industries

Heat transfer fluid service
High temperature/pressure liquid processing
Polymer production

Applications

Temperature swing applications from start-up to 700°F
High temperature and pressure liquids, including heat transfer fluids and polymers

Documents

Carbon/Graphite Seated Valves Brochure

Contact Us

Contact our Valve Specialist Team

Brendan Merrigan (External) – mob: 087 2598124
Vicki McGrath – tel: 021 461 7207
Brian Barry – tel: 021 461 7211
Tim Quigley – tel: 021 461 7209
Ross O’Donovan – tel: 021 461 7230
Shauna O’Connor – tel: 021 461 7237
Tel: 021 461 7200

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