Gate · Ball · Butterfly · Globe · Check · Control · DN15 to DN600, Class 150 to 900

Valveon Flow Control
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Ball Valves
CNC machining centre cutting a large steel valve body under coolant spray
Hydrostatic pressure testing bay with a flanged valve clamped in a test rig

VB-150F

VB-150F Floating Ball Valve

A two-piece floating ball valve for utility and instrument isolation up to DN150, with a blowout proof stem and a locking lever.

  • Blowout proof stem retained from inside the body
  • Live loaded packing takes up wear without regular gland adjustment
  • Lever locks in both the open and closed position for isolation work
  • Available full bore or reduced bore on the same face-to-face
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Specifications

Design standard
ASME B16.34
Nominal size
DN15 – DN150 (NPS 1/2 – 6)
Pressure class
Class 150 / 300
Body material
ASTM A351 CF8M, A216 WCB
Trim material
316 stainless ball and stem, reinforced PTFE seats
End connection
Raised face flange to ASME B16.5, NPT screwed, socket weld
Operating temperature
-29 °C to +180 °C with reinforced PTFE seats
Face-to-face
ASME B16.10
Actuation
Lockable lever, ISO 5211 pad for actuator
Test practice
Shell and seat to API 598

Product detail

Below DN150 a floating ball is the simpler answer. The ball is held only by the two seats, and line pressure pushes it against the downstream seat to make the seal. Fewer parts, lower cost, and nothing to go wrong as long as the valve is not asked to modulate.

Where it fits

Utility water, instrument air, sampling points, pump isolation and drain lines. It is a shut-off valve, not a throttling valve: parking the ball half open erodes a groove across the seat and the valve will not seal again.

Construction

Two-piece body with a threaded or bolted joint, full or reduced bore. The stem enters from inside the body and is retained by a shoulder, so it cannot be blown out if the packing nut is removed under pressure. The lever accepts a padlock in both positions for lock-out work.

Seats and packing

Reinforced PTFE seats as standard, with a live loaded stem packing that takes up wear rather than needing the gland retightened after every thermal cycle. Antistatic contact between ball, stem and body is fitted on all sizes.

Enquire about this model

VB-150F Floating Ball Valve

Include the line size, design pressure, medium and operating temperature and we will confirm the body, trim and end connection for your line.

Send the line size, class, medium and temperature and we will reply with a datasheet.

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