Concentric valve

Specification of "C" Series

The valve shall be capable of bi-directional flow with bubble tight
shut-off at full rating pressure.

Type numbering system

• AV-CWR Concentric WAFER type Rubber lined Butterfly Valves
  
• AV-CSR Concentric SEMI-LUG type Rubber lined Butterfly Valves
  
• AV-CLR Concentric LUG type Rubber lined Butterfly Valves
  
• AV-CFR Concentric FLANGE type Rubber lined Butterfly Valves
  

Standards compliance

• ACE Concenctric Butterfly valves conform to ISO 5752, KSV 7490, JIS F 7480, JIS B 2032, JIS B 2064, API 609, BS5155, in general
  

Production range

• SIZE : 50A(2inch) ~ 2000A(80inch)
  
• RATING PRESSURE : Up to 16bar
  
• RATING TEMPERATURE : -20°C ~ +200°C
  

Applicable flange

• KS/JIS 5K, 10K, 16K, 20K
  
• ANSI B 16.1 Class 125LB
  
• ANISI B 16.5 Class150LB
  
• BS 4504 PN6, PN10, PN16
  
• DIN 2501 PN6, PN10, PN16
  
• ISO 2084 PN6, PN10, PN16

The Concentric Design

CENTER OF SHAFT' in the 'Center of Pipe' / 'Center of the Valve Seat' Applicable for BUTTERFLY VALVE WITH ELASTOMER LINING.

Symmetric disc design ensures favourable flow characteristics and low pressure drop

Connectirc shaft ensures low operating torque

Lining gives a good protection to valve body, and acts as flange gasket

• Shaft penetrates the valve seat
  
• Limited choice of seating materials(Elastomer, only)

Suitable for installation in 'Low Pressure System'
Not suitable where FIRE-SAFE or FIRE-PROOF requirment apply to the valve or valve installation method

Classification by Connection Type 

Appearance	Type	General Charateristics
	AV-C Series AV-CWR (WAFER)	-General Applications-Shipbuilding water works, heating and ventilation, power plants,oil refinery Chemical plant etc. -Valve to be installed with long bolts between the flanges at adjacent pipe without flanges on the valve. -Easy handling and light weight. -Easy installation less bolt quantity and low cost. -Inconvenient maintenance of adjacent pipe.
	AV-C Series AV-CSR (SEMI-LUG)	-General Applications-Shipbuilding water works, heating and ventilation, power plants,oil refinery Chemical plant etc. -Similar as wafer type except a pair of the thread bolt hole in way of the upper and lower lug sides for easy maintenance of adjacent pipe. -Easy handling and light weight -Less quantity of bolt hole and easy installation -Keep liquid remained during repairing adjacent pipe.
	AV-C Series AV-CLR (FULL-LUG)	-General Applications : general piping system pump outlets, tank drains, ship sides etc. -Ring shape thread bolt hole for bolting with flange. -Keep pressure inside during repairing adjacent one side pipe. -Different flange shape. -Possible damage on full face gasket. -Hard repairing corroded bolt. -More man-hour for installation. -Heavy weight.
	AV-C Series AV-CFR (FLANGE)	-General Applications-, Shipside valves, ballast valves, water works, power plants, etc. all piping system. -Both ends with complete flange. -Suitable to general pipe flange. -Suitable for shipside valve in the ship. -Heavy weight. -Same installation as ordinary valve.

Schema of Concentric Type

• The valve shall be a 90° turn clockwise to close, non-jaming, resilient seated valve for zero leakage service.
  
• The valve shall be torque seated and designed in such a manner that the disc can not be rotated the seat without the actuator.
  
• Also this valve enables the fluid perfect shut-off regardless of the flow direction.
  

Operations

The following operation of the valve is possible depend on the valve location, the type of work and service of the valve to be provided.

• Manual handle lever Operation
  
• Manual worm gear Operation
  
• Single or double acting pneumatic Operation
  
• Hydraulic actuator Operation
  
• Electric motor Operation