Manufacture
of industrial
valves
Ru / Eng / Ae
Pig valves
NPS 6˝… 20˝ Class 150...900
API 6D
Pig valves

MAIN CHARACTERISTICS

Pig valves are designed for loading and receiving cleaning pigs and detecting tools at pipelines transporting: natural gas, oil products and other gaseous and liquid media at temperature prom -15ºC to 250ºC.

Trunnion mounted ball  valves,  split body design, aboveground installation type.

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

RATINGS: #150-#300-#600-#800-#900

Actuator type: electric actuators or manual actuators with mechanical gear.

Connection to the pipeline: RF/RTJ  (ASME 16.47, ASME 16.5) or BW (ASME 16.25)

MATERIAL SPECIFICATION

Pig valve materials.jpg

OPERATION

Pig valve operation.jpg

INSTALLATION SCHEME

Pig valve installation scheme.jpg

DESIGN FEATURES

Pig valve design features.jpg   1. BYPASS CAVITY
   Pig valve ball has bypass cavity. It ensures working medium flow through ball
   valve in «closed» position (at the moment of loading or removing a pig).
   Bypass cross-section is about 25% from pipeline cross-section. 
   Herewith medium pressure in the pipeline is not changed. Ball valve can be
   supplied without bypass cavity in the ball upon Customer›s request.

   2. TRUNNION MOUNTED BALL
   Pig Valves are develope basis PTPA High Performance Trunnion Mounted
   Ball Valves having the same design, features and high reliability.

   3. SAFETY
   Launching and receiving cameras are equipped with pressure relief valves
   to ensure safe operation of the Pig Valve.

4. DRAIN & VENT
Drain connections are installed at ball valves for removal of condensate fluid from the body.

5. SPLIT-BODY DESIGN
Split-body design increases valve maintainability, allows to use it at aggressive working medium and conduct:
- components replacement;
- maintenance without dismantling.

Ball valves are equipped with GREASE INJECTION SYSTEM for supply of grease to stem and seat sealing. It allows to extend service life of the valve.

Pig Valve main dimensions
⇧ Up