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Butt weld end ball valve KM 9103.X-03.1-AP-FB

Products >> Floating ball valves >> For high temperatures

NPS ½ – NPS 4″, Class 150 – Class 900

API standard, full bore


Butt weld end ball valves type KM 9103.X-03.1-AP-FB are isolating valves designed to fully open or close the service fluid flow. They are not designed to be used for throttling or regulating purposes. The scope of application of the ball valves depends directly on their materials and on the properties and temperature of the service fluid. The standard materials are specified in the datasheet. By agreement and based on service conditions, also other materials than those specified in the datasheet may be used.

The ball valves are designated for heating gases (e.g. natural gas, lighting gas, propane-butane mixture, biogas, coke-oven gas), water, steam, oxygen, and generally for both corrosive and non-corrosive liquids and gases without mechanical impurities. Service temperature range can be from −60°C to +400°C depending on body material. Allowable service pressures are in compliance with the pressure-temperature ratings (graphs B2).

Technical Description

Ball valve design meets the requirements of API 608 and API Spec 6D. The ball valve is with full bore and floating ball. The stem design ensures that the stem can not be ejected from the valve body by pressure of the fluid (anti-blow-out stem), internal components are connected to provide conductivity and resistance to formation of electrostatic discharges (anti-static design).


  • hand lever
  • hand wheel with worm gear
  • pneumatic actuator
  • electric actuator

Dimensions of flanges for actuator installation are in accordance with ISO 5211. The actuator size depends on the maximum service pressure drop through the ball.

The method of operation is indicated by the third digit of the type designation, which is „0“ for lever and „3“ for actuator (e.g. KM 9133.X-03.1-AP-FB).

Connection to Piping

Overall dimensions are shown in the datasheet. Dimensions according to standards:

  • shapes of welding ends according to ANSI B16.25 and EN ISO 17292
  • dimension of ball bore according to API 608
  • end-to-end dimension according to ANSI B16.10 or not standardized


According to API 598 or API Spec 6D – zero leakage. If required by the Customer, additional tests may be performed as well.

Installation, Service and Maintenance

The ball valves may be installed into the piping in any arbitrary position. They require no special adjustments or maintenance. They are operable at the full pressure drop corresponding to the pressure Class.

Prior to welding it is necessary to fully open the ball valve. The welding sockets must not be removed from the body.

Optional Accessories, Adjustments and Services

  • different dimensions of welding ends or combinations of ends
  • heating jacket – for keeping the fluid liquid
  • lockable handle with a padlock – for locking opened / closed position of the valve
  • extended stem – e.g. for the reason of insulation of the valve and pipeline
  • up-stream vent hole – for balancing pressure into up-stream pipeline
  • fire-safe design – fire resistance in accordance with EN ISO 10497 (API 607)
  • limit switches
  • documentation according to EN 10204 3.1 or 3.2
  • special adjustments according to customer requests
  • valves for pressure Class 900
  • execution according to standard NACE MR 0175 or ISO 15156

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