Wafer Type Butterfly Valve (KDSW-1)

Small in size and light in weight, easy installation and mintenance. It can be mounted wherever needed.
Simple and compact construction, quick 90 degrees on-off operation.
Miniminzed operating torque, energy saving.
Flow curce tending to straight line, excellent regulation performance.
Long service life, standing the test of tens of thousands opening/closing operations.
Bubbles-tight life, standing the test of tens of thousands opening/closing operations.
Wide selection of materials, applicable for various medium.

Technical data:

Nominal diameter DN(mm): 50(2")-1000(40") 50(2")-800(32")
Nominal pressure PN(MPa): 1.0-1.6
Testing pressure(MPa): Shell: 1.5-2.4 sealing: 1.1-1.76
Suitable mediums: Fresh water, sewage. Sea water, air. Steam. Food. Medicine, oils, acids, etc
Working tempreture: -15-+150

Material of main parts

Body Disc Stem Bushing Seat
Name Code Name Code Name Name Name Code Working tempreture
Cast iron Z Plated ductile iron B1 Stainless steel Lubrized
Bronze NR X1 -20~+85
Ductile iron Q Aluminum bronze B2 Hypalon X2 -23~+121
Aluminum bronze T ZG1Cr13NI9TI
Stainless steel B3 EPDM X3 -23~+121
X4 -7~+93
X5 -23~+100
Stainless steel(ZG1Cr13NI9TI) P Titanium steel B4 Carton steel PTFE neoprene X6 -10~+100
Stainless steel(CF8M) R Stainless steel(CF8M) B5 NBR X7 -23~+200
Carbon steel C Carbon steel B6 Wear-resistant
Rubber X9 -23~+135
Stainless steel(CF8M) B7 Viton
F4 +10~+150
Hear-resistant
Rubber
PTFE