½” - 2” | Class 800 - Class 1500

JC offers also a large range of metal seated ball valves for different services (slurries, pulp and liquors, high temperature, abrasive or sticking fluids, control).

• Bubble tight sealing up to 327 ºC and Class V up to 500 ºC
• Low coefficient of friction
• Excellent sliding and running properties
• Hardens the complete surface of ball and seats

WHY METAL SEATED BALL VALVES?

Metal seated ball valves are mainly used for heavy duty applications such as:

• High temperatures: above 260 ºC the use of soft seats is not recommended.
• Abrasive media: even small particles can damage soft seats.
• High Velocity in opening/closing cycles: this action can perfectly deform the soft ring and
  destroy the seat.

HARDERING TREATMENTS

HT-65

Max. Temperature: 500 ºC
Corrosion Resistance: Medium
Abrasion Resistance: Medium
This is an exclusive treatment developed by JC with two main advantages, first all the ball and seat surface is hardened and second there is no additional overlay on the seat surface. This gives a very good tightness and a lower torque. The surface is hardened to 70 Rockwell C and it is valid to work upto 500 ºC.

CT-70
Max. Temperature: 550 ºC
Corrosion Resistance: Medium
Abrasion Resistance: High
Is a Tungsten Carbide coating in a metallic matrix bonded. Mechanically to the base material by HVOF methods. This treatment gives a very good resistance to abrasion and impact and is suitable to work upon 550 ºC.

CC-60
Max. Temperature: 800 ºC
Corrosion Resistance: High
Abrasion Resistance: High
Is a Chromium Carbide coating in a nickel-chrome base in a metallic matrix bonded mechanically to the base material by HVOF methods. This treatment gives a very good resistance to abrasion and is the best choice for severe corrosion applications. It is suitable to work up to 800 ºC.

PRODUCTION OF METAL SEATED BALL VALVES

Metal seated ball valves are mainly used for heavy duty applications.
One of the main advantages of using JC metal seated ball valves is the fact that we can transform a soft seated stock valves into a metal seated valve.

The steps to be done are:

• Re-machining of the body.
• Lapping of the ball and seats.
• Hardening treatment to ball and seats.
• Final adjustment of the ball with its seats.
• Assembly and test.