E-mail TDV@ndvtj.com.cn
Phone 022-59813960-8888

Product

Cast iron butterfly valve (C201R type)

High sealing performance by centripetal self-sealing.

The seat is a long service life.


image.pngimage.pngimage.png
Lever operated valve
CL201R type
Pneumatically operated ON-OFF valve
(double acting)
CPN1200R type
Pneumatically operated ON-OFF valve
(reverse acting)
CPO1200R type


Cast iron butterfly valves(C201R type)

①Long Life with double off-center Mechanism

image.png

Same as KM200 type, the drive shaft of the disc is double eccentric (double off-center). The disc and the seat do not contact until just before they are fully closed, so the seat has a long service life with little wear.    










②High sealing performance by centripetal self-sealing

image.png

The sealing surface of the disc has a spherical surface centered around the point "O" of the figure and the seat has a clearance of the "C" on its outside. Therefore, the valve is fully closed and a uniform contact with sealing surface is obtained by simply placing the seat. In addition, the seat has a self-sealing mechanism that generates surface pressure on the seal surface of the disc by the fluid pressure, enabling a good seal from vacuum to high pressure.










③Easy maintenance

The seat can be easily replaced simply by removing the seat cover.

Applicable field

Chemicals, Environment and Water Treatment, Steel, Ships, Power Stations, Air Volume Control, etc.

Standard Specifications

Valve type

C201R

Body

FC200

Disc

FCD450 + Nickel-plating

Stem

SUS420J2

Seat

・Synthetic rubber seat: AB(NBR), EP(EPDM)

・Fluorocarbon resin seat: TF(PTFE+EPDM)

・CF (reinforced PTFE+EPDM containing carbon fiber)

・CM (reinforced PTFE+SUS304 containing carbon fiber)

Gland packing

NBR、EPDM、FKM

Connection

Wafer JIS5K, 10K


Please refer to the catalog, drawings, etc. or contact our sales representatives for the details.