3-piece ball valve


3-piece ball valve 303

Our 3-piece ball valve :

For quick operation ; no pressure loss

Maintenance made easier through interchangeability of components

DN 15 to DN 200
1/2" to 8"
PN 10 to PN 50
150 to 300 lbs

Type: 303

Functions – 3-piece ball valve

♦ on/off valve : for tanks, reactors or process line

Construction – 3-piece ball valve

  • Construction materials: Carbon Steel (CS), Stainless Steel (SS), Duplex & Super Duplex, Inconel & Incoloy®, Titanium, Zirconium, Uranus® B6, Tantalum, Nickel, Hastelloy®, Monel
  • Construction methods: Fabricated (Welded), Cast, Solid

Uses – 3-piece ball valve

  • Service conditions: Low temperature, Abrasion, Corrosion, High viscosity, Vacuum, Low acoustic signature
  • Types of fluids: Liquids, Liquids with solid particles – Slurry, Gas, Powder and powdery media, High viscosity fluids
  • Applications: Fine chemicals, General chemicals, Nuclear and Naval / Submarine

Features & Options

3-piece ball valve 303

DN 15 to DN 200
1/2" to 8"
PN 10 to PN 50
150 to 300 lbs


♦ bi-directional tightness by metal/metal or metal/packing ball seating, according to operating conditions
♦ excellent tightness guaranteed by floating seats design
♦ full opening, free flow guaranteed
♦ full port, no retention areas, circulation of line cleaning devices enabled
♦ bolted stuffing-box, self-adjusted with spring washers
♦ In compliance with PED 97/23/EC


lever (quarter-turn rotation),double acting pneumatic actuator,single acting pneumatic actuator (limited by size/pressure class and/or stroke),electric motor,air motor

Closing device


Options – 3-piece ball valve

– adaptation to any type of connection
– hard faced seating surfaces
– ball scraper for seat protection
– spring loaded seats
– heating jacket
– additional body nozzles for draining and/or steam cleaning
– leak detector at stuffing box
– pneumatic actuator with manual override
– stainless steel pneumatic actuator
– actuator locking system (safety)
– manual operator with locking mechanism
– extended manual operator, optionally with cardans
– manual operator mounted on ISO base for later adaptation of actuator
– electric actuator with local/remote controls
CAUTION : some options are not compatible