Manufacture
of industrial
valves
Ru / Eng
Split body and Fully welded ball valves
NPS 3/8˝… 56˝ Class 150...2500
API 6D
Split body and Fully welded ball valves
Ball Valves Product Catalogue.pdf

MAIN CHARACTERISTICS

Floating  or  trunnion mounted,  side  entry  ball  valves,  split body or  fully welded  design.

API 6D design, antistatic feature and anti blowout stem system.
Fire-Safe Design:
API 607, API 6FA

RATINGS: #150-#300-#600-#900-#1500-#2500

Installation type: aboveground or underground.

Actuator type: piston actuators (pneumatic, gas-over-oil and electro-hydraulic), electric actuators with mechanical gear (or without gear), manual actuators with mechanical gear, levers, handwheels.

Connection to the pipeline: RF/RTJ  (ASME 16.47, ASME 16.5) or BW (ASME 16.25)
Split body ball valves product range              Fully welded ball valves product range

MEDIUM CHARACTERISTICS AND MATERIALS OF MAIN PARTS

Ball Valves materials of main parts.jpg
Ball Valves Medium characteristics.jpg

SEAT INSERTS & SEALS MATERIAL OPERATING LIMITS

Ball Valves Seat inserts.jpg

DESIGN FEATURES

Ball Valves design features.jpg   1. FULL OR REDUCED BORE DESIGN
   Due to the full bore design cleaning or diagnostic tools can move freely
   through the pipeline.
   Reduced bore valves can be used in case a system does not require full bore
   to accommodate a pig and is not expected to operate at the full capacity
   of the pipe.

   2. STEM DESIGN
   Stem design allows replacing of the upper gasket while pipeline continues its
   operation. Antistatic feature is provided in seals design.

   3. DRAIN AND SAFETY RELIEF
   Safety relief system is designed to prevent the pressure in the cavity from
   exceeding 1,33 times the valve pressure rating. Drain pipe is installed
   to remove condensates or other impurities from the inner cavity of ball valve.
  
4. GREASE INJECTION SYSTEM
Valve seats can be equipped with a sealant injection system to provide emergency sealing between seat and ball and stem. The system is designed to allow sealant grease injection while in service; the sealant is distributed at the seating surface between seat and ball.
Ball Valves body.jpg
FULLY WELDED AND SPLIT BODY BALL VALVES

PTPA manufactures fully welded and split body ball valves.
Fully welded body design is more reliable for gas application.
This design allows to minimize the risk of fugitive emissions.
Split body design increases ball valve maintainability, allows to use it
for aggressive working medium and easily replace sealing element if necessary.

TIGHTNESS

FLOATING BALL

Ball Valves floating ball.jpg  


   Seal tightness for ball valves with floating ball is provided by pressing
   the ball to the down-stream seat by the medium pressure.

   Seat design provides equal pressure distribution at the ball.







TRUNNION MOUNTED BALL
 
Ball Valves trunnion ball.jpg

For trunnion-mounted ball valves seal tightness is provided by pressing the seats to the ball by the medium pressure and springs. Seats constantly contact the obturator protecting it from coke build-up and providing stable tightness class «Zero Leackage» for upstream and downstream service. Body cavity tightness is provided for ball valves for gaseous medium. Ball Valves trunnion ball for liquid media.jpg



Ball valves for liquid media have the system of pressure relief from the body cavity.

When medium temperature is rising and pressure achieves 1,3 PN, the internal pressure is relieved at one of the pipeline ends (with the lowest pressure).


MAIN DIMENSIONS

Split body ball valves, floating ball

Split body ball valves, trunnion mounted ball

Fully welded ball valves, trunnion mounted ball

Ball valves for underground installation
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