Nihon Koso Kentintrol Butterfly Control Valves

Manufacturer: NIHON KOSO CO., LTD.

Features

High flow coefficient

Anti-cavitation, low-noise vane design.
Lighter weight and more compact than a globe valve.
Superior seat and stem seal integrity.
Profiled vane with cowls on leading and trailing edges to dissipate energy created by pressure drop across the valve.
Baffle plates fitted for noise attenuation.
High rangeability – excellent control between 5° and 90° of opening.
Operating torque requirements are around half the conventional butterfly valve requirements, requiring smaller more compact actuators.
Complete range of body materials.

Technical Specification	Valve type: Introseal soft-seat Sizes: 6″ to 48″ (150 mm to 1200 mm) ANSI Rating: 150 to 2500 Disc configuration: Standard and Rotrol Body style: Wafer, flanged lugged Leakage class: VI Temperature (°C): −196 to +235

The Series 63 Butterfly valve can be used where 100% shut-off (Class VI) in the closed position, or control of the flow through the pipeline is required.
It can operate at temperatures of between -196°C and 235°C, and pressure drops of up to 100 bar.

Technical Specification	Valve type: Introseal metal-seat Sizes: 6″ to 48″ (150 mm to 1200 mm) ANSI Rating: 150 to 2500 Disc configuration: Standard and Rotrol Body style: Wafer, flanged lugged Leakage class: IV Temperature (°C): −196 to +600

The Series 64 butterfly valve can operate at higher temperatures than Series 63 and is used for applications where a small leakage (Class IV) is allowed in the closed position or where a soft seat is impractical due to high temperatures or arduous service conditions.
It can operate at temperatures of between -196°C and 600°C, and pressure drops of up to 100 bar.

Technical Specification	Valve type: Introseal Firesafe Sizes: 6″ to 48″ (150 mm to 1200 mm) ANSI Rating: 150 to 2500 Disc configuration: Standard and Rotrol Body style: Wafer, flanged lugged Leakage class: VI Temperature (°C): −196 to +235

The Series 65 valve is similar to Series 63 but with a back-up seat.
This can maintain the integrity of the valve in the event of a fire destroying the soft seat.
The back-up seat will allow only minimal leakage in the closed position and will also ensure that the valve remains operable after a fire until it can be removed and replaced safely.

Technical Specification	Valve type: Introseal (no seat) Sizes: 6” to 48” (150mm to 1200mm) ANSI Rating: 150 to 2500 Disc configuration: Standard and Rotrol Body style: Wafer, flanged lugged Leakage class: II Temperature (ºC): -196 to +800

The Series 66 valve is designed for applications where leakage in the closed position is not a problem but controlling the amount of liquid of gas through the pipeline is essential.
Up to 200°C, Class II leakage can be maintained in the closed position. It can operate at temperatures of between -196°C and 800°C (albeit with higher leakage above 200°C), and pressure drops of up to 150 bar.