These three-piece ball valves, fitted with special filled PTFE seats, are specially designed for on/off steam applications.

The full range of reduced and full-bore valves are available with special designs for steam services. In general, these valves will have seats of special filled PTFE and body seals of graphite. Pressure ratings will be as per flange ratings in flanged valves and 103kg/cm2 for screwed/socket-weld end valves.

The Diverter Valve is designed to divert media from the bottom inlet port to either of the two outlet ports. The Three-way Valve, also known as a Mixer Valve, permits use of any port as inlet.

The 3CXR series Cryogenic Valve is designed for low temperature services down to -196⁰C. Typical applications are LNG storage/distribution, terminal unloading stations, liquid Nitrogen and liquid Oxygen lines. The valves incorporate exclusive features such as:

• * Effective stem extensions - conformance to standard international practices, selection of wall thickness and lengths to keep heat transfer down, packing frost-free, operational torques low and actuators well supported
• * Superior stem design - a one-piece stem with special stem seals to ensure a zero-leak stem and low operating torque
• * High performance sealing - special seats and body seals to ensure bubble tight shutoff and zero body leakage
• * Ease of installation - three-piece construction to facilitate easy installation and maintenance
• * Flexibility - a variety of end connections such as screwed end, socket-weld end and extension nipples

The AIL Series 3HXR Ball Valve has been specially developed to meet the industry's requirement of a safe and reliable shutoff valve for high-pressure applications. This valve incorporates a number of product features like high-pressure seals, thicker flanges on the body connectors, high-tensile bolting, special acetal resin seats, high-strength stem and high pressure integrity gland assembly.

These are high-durability ball valves for superheated steam and high temperature applications, with the following features:

• Ability to handle high pressure and temperature shock
• Ability to withstand high pressure drops
• Ability to resist abrasion and wear
• Services up to 340⁰C and 100kg/cm² pressure

The metal-seated versions have a graphite impregnated alloy stainless steel seat with integral graphite seat seal. These are suitable for conditions up to 340⁰C and 70kg/cm². The stainless steel ball is ENP coated to make the surface harder.