Brief
Loudspeaker mute check valve is mainly composed by the valve body, the valve seat, the valve petal, the axle bush and the spring, so on. Internal flow channel uses the streamline design , the pressure loss is small. The valve petal’s on-off process is very short, which can shut fast when the pumps stops, preventing the huge water hammer sound , with the character of static sound closure.
This valve is
mainly suitable for draining water, the fire prevention warm passes system, may
installed in water pump outflow point, presenting the medium flows back and
harm of the water hammer.
Technical data
|
DN(mm) |
50—350 (2—14inch) |
|||
|
PN(Mpa) |
1.0 |
1.6 |
2.5 |
|
|
Maximum
operating pressure |
1.0 |
1.6 |
2.5 |
|
|
Ps(Mpa) Test pressure |
Shell |
1.5 |
2.4 |
3.75 |
|
Seal |
1.0 |
1.6 |
2.5 |
|
Material of main parts
|
Part name |
Material name |
|
Valve body,leads
the fluid |
Gray iron,
modular cast iron |
|
Valve
seat,bearing,valve petal,axis |
Aluminum bronze
or chromium rustless iron |
|
Spring |
Stainless steel |
Main dimensions
|
DN(mm) |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
|
L(mm) |
120 |
150 |
180 |
240 |
300 |
350 |
450 |
500 |
550 |
575 |