Metal Seated Ball Valves
Metal seated ball valves are selected when temperature, abrasive solids, erosion or media severity make soft-seat materials unsuitable.
Define the operating envelope before selecting the valve construction.
Metal seated ball valves are selected when temperature, abrasive solids, erosion or media severity make soft-seat materials unsuitable.
Base valve construction still matters
After the service condition is defined, select the underlying floating, trunnion mounted, top entry, fully welded or DBB design according to size, pressure, maintenance access and isolation duty.
Information to include in the RFQ
Include operating temperature, media solids or erosion risk, leakage requirement, hardfacing preference and actuator/torque requirements in the RFQ.
Key design questions for metal seated ball valves.
Use these points to define the project design envelope and qualification requirements.
Temperature Range
Specify the minimum and maximum operating temperatures together with the required body, trim, packing and sealing materials.
Ball & Seat Hardfacing
Define the required hardfacing or coating system when the project specification controls material, hardness or surface finish.
Leakage Requirement
Specify the required leakage acceptance criteria for the metal-seated valve.
Operating Torque
Include the required actuator type and available design differential pressure so operating torque and actuator margin can be reviewed.
Technical documents for project review.
For technical evaluation, request the applicable product documents and inspection records for the offered valve configuration.
Product Photos
Additional finished-valve, nameplate and component photos are available for the selected valve configuration.
GA Drawing / Datasheet
GA drawings and datasheets are prepared for the selected size, pressure class and valve configuration.
Testing & Inspection Records
Inspection documentation can include pressure testing, dimensional inspection, PMI, NDE/NDT and coating records as required by the project.