Sheet 25/77Products / Valves and process equipment / Ball valveRev
Valves and process equipment · catalogue item
Ball valve
Quarter-turn valve with a bored ball for fast isolation and tight shutoff.
In short
Quarter-turn valve with a bored ball for fast isolation and tight shutoff. JJ Projects sources it to the specification the buyer names. Typical reference, standards: API 608 (metal ball valves), API 6D (pipeline), ASME B16.34.
Specification references
Typical references only. The governing specification is the one on your purchase order or datasheet.
| Property | Typical reference |
|---|---|
| Standards | API 608 (metal ball valves), API 6D (pipeline), ASME B16.34 |
| Fire test | API 607 when specified |
| Ways | Two-way and three-way |
| End connections | Flanged, threaded, socket-weld or butt-weld |
Specification references describe what the order names, not a certification held by JJ Projects.
Valves and process equipment
Typical uses
- 01Fast on and off isolation in process, gas and utility lines
- 02Pipeline block valves, including full-bore valves that allow pigging, under API 6D
- 03Diverting or mixing flow with three-way ball valves
- 04Instrument and sample isolation in smaller sizes
What to include in a request
A request with these details can be quoted without a round of questions. Send what you have and we will ask for the rest.
- 01NPS and pressure class, or the design pressure and temperature
- 02Standard: API 608 for metal ball valves, API 6D for pipeline valves, or the one your specification names
- 03Bore: full bore or reduced bore, and the number of ways, two or three
- 04Construction: floating ball or trunnion mounted, and body in one, two or three pieces
- 05Body, ball, stem and seat materials, for example carbon steel with 316 stainless trim and reinforced PTFE seats
- 06End connections: flanged, threaded, socket-weld or butt-weld
- 07Fire-safe design to API 607 if required, operator type, service fluid, testing and documents
Valves and process equipment
Related items
- 01Gate valveSteel gate valves to API 600, API 602 and ASME B16.34, tested to API 598, with the specification references and what a gate valve request should include.Learn more
- 02Globe valveGlobe and angle valves in steel to BS 1873, API 623 and API 602 with ASME B16.34 ratings, and what to include in a globe valve request so it can be quoted.Learn more
- 03Swing check valveSwing check valves to API 594, API 6D and API 602 with ASME B16.34 ratings, tested to API 598, and what a check valve request should include.Learn more
- 04Needle valveNeedle valves in forged A105 carbon or A182 F316 stainless steel with NPT, socket-weld or tube ends for instrument and sample lines; request details.Learn more
All valves and process equipment
Guides
Guides
- 01Valve types and standards: API and ASME B16.34Gate, globe, ball, check, butterfly and needle valves: what each does, which standards apply (API 600, 602, 6D, 608, 594, B16.34) and how to choose.Learn more
- 02Flange pressure classes: ASME B16.5 and B16.47How ASME flange classes 150 to 2500 work: B16.5 vs B16.47, pressure-temperature ratings, facings RF, FF and RTJ, flange types and common materials.Learn more
- 03Material test reports (MTRs) and EN 10204What a material test report contains, how EN 10204 types 2.1, 2.2, 3.1 and 3.2 differ, what heat numbers mean, and what to check against the purchase order.Learn more
Questions
Questions
01What is the difference between full bore and reduced bore?
A full bore valve has a ball opening equal to the pipe bore, so flow is not restricted and a pipeline pig can pass. A reduced bore valve has a smaller opening, which makes the valve lighter and cheaper but adds pressure drop. Pipeline valves under API 6D are usually full bore.
02What does trunnion mounted mean?
In a trunnion mounted valve the ball is held by shafts at top and bottom, so line pressure does not push it hard onto the seat, and operating torque stays lower in large sizes and high pressures. A floating ball valve lets the ball move slightly against the seat under pressure.
03Can a ball valve be used for throttling?
Standard ball valves are made to be fully open or fully closed. Holding them part open can erode the soft seats. Use a globe valve or a control valve when flow must be regulated.
Send the specification. We will take it from there.
A material list, a drawing or a single line: tell us what the project needs and where it is going.