Stem

• The stem is independent from the ballandis not subject to theside load generated by the line pressure acting on the ball.

• Two O-Rings and agraphite gasket grant a triple barrierand thefire safe sealing on the stem.

• Abuilt instemsealant injectionsystemis provided as

  a standardfeature.

• The standard antIblow-out eature ofthe stemis

  inaccrdance to API6D and is granted by the bodvcover. By removing the gland bushing the upper stem gasket can be replaced for

  maintenance with thevalve in service.

Ball

• Inside entry valves 4" and smaller the ball is kept in position by an upper and alower trunnion,housed

  in the primary body.

• Inside entry valves 6" and larger the ballis kept in position by an upper and alower trunnion, housed

  in two bearing blocks

• Both the trunnions absorb the side load generated by the line pressureacting on the ball,without affecting the rotation of the stem

• Large diameter trunnions minimize the torque required to operatethe valve.

• The trunnion srotateinto metalbacked

  self-lubricating bearings.

Emergency Seat Injection

• Emergency grease in jection fitting forseat rings are standard for6" and larger valves and as option on sizes 2"-4".

• An eedle valve, complete with non return check valve is screwed in the bodyand connected to theseatrings.

• The emergency sealantinjection can temporarily solve leakage problems, seatsshall be re paired at the first opportunity.

• For valves smaller than 6" seat sealant in jection fitting can beprovided in the body cavity

Body Vent & Drain

• All J-VALVES SPE TMBV are complete with ascrewed NPT Plug, located in thelower side of the body completedraining of the body cavity.

• For valves up to size 4"the drain and vent are combined in oneport.