Product Details
Product
Introduction
KAQ347F gas ball valve is a
valve used to cut off, distribute and change the flow direction
of the medium in the pipeline. It only needs to rotate 90 degrees
and a small turning torque to close tightly. It is most suitable
as a switch or a shut-off valve. The ball valve has the
advantages of compact structure, reliable sealing, simple
structure, convenient maintenance, not easy to be eroded by the
medium (because the sealing surface and the spherical surface are
often in a closed state), and easy operation and maintenance. The
applicable medium of this product is natural gas, etc. It is
mainly used to cut off or connect the pipeline.
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Body Material: WCB(more
details please check the follow drawing)
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Surface material: Carbon
steel: epoxy resin
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Applicable medium:
gas
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Diameter:
DN40-500mm
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Nominal Pressure:
1.6-25MPa
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Design temperature:-29ºC~
+121ºC
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Connection type:
flange
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Design Standard:
GB/T12237-2007
Purpose and Performance
Specifications
KMO's ball valve is suitable for all
kinds of pressure, temperature and medium of medium and small
diameter pipelines. It controls the opening and closing device of
connecting or cutting off the pipeline medium, and presses the
ball on the valve seat of the outlet end by the medium pressure.
The pressure and diameter used are
limited.
Operation Principle and Structure
Description
The ball
valve channel is smooth, which is convenient for cleaning
pipeline and conveying medium.
The gasket
is made of PTFE (Teflon), it has good lubricity and elasticity.
Besides, it has a small friction with the sphere, which make it
has a long service life.
Rotating
the 90° to open and the close the valve, which is convenient and
quick.
The fluid
resistance of the ball valve is small. When it open fully, the
cross-sectional area of the ball channel, valve body channel and
connecting pipe are equal and connect in a straight line. The
medium flowing through the ball valve is equivalent to flowing
through a straight pipe. The fluid resistance of the ball valve
is the smallest among various valves.
The
driving modes include manual, worm gear drive, pneumatic and
electric (explosion-proof), which can realize remote automatic
control, which can meet the user's needs for various working
conditions.
Features of
Product Structure
Easy to operate: The ball
is supported by the upper and lower bearings, reducing friction
and eliminating the excessive torque caused by the huge sealing
load formed by the inlet pressure pushing the ball and the
sealing seat. Even under the highest operating pressure can
achieve smaller torque.
Good sealing performance: a
spring is provided at the tail end of the metal valve seat to
ensure sufficient pretension. When the sealing surface wears out
during use, the valve continues to ensure good sealing
performance under the action of the spring.
Drainage pipeline: Sewage
holes can be set at the top and the bottom of the valve body,
which can exam if the valve is leakage or not.
Installation&Maintenance
The ball
valve has been tested for various performances such as strength,
sealing, and switching according to the "valve inspection and
test" standard before leaving the factory, so as to meet the
requirements of the standard, and remove the oil and debris
inside and outside the valve cavity. Both ends are sealed with
caps.
Before
installation, the user should check carefully whether the content
of the nameplate is in accordance with the conditions of use. It
is not allow to install and use the valve with over-pressure or
over-temperature.
Before
installation, KMO recommends that the caps at both ends of the
inlet and outlet should be removed, and check carefully whether
there is dirt adhering in the valve cavity. At the same time,
checking whether the bolts, nuts and packing glands of the
connection parts of the valve are loose. If they are loose, they
should be tightened.
Connecting
the ball valve to the pipeline should be according to the
designed connection method. After fixing, the valve should not
withstand large tensile, compression, bending and twisting
stresses to avoid damage to the valve.
The
transmission mode of the ball valve includes manual, worm gear
transmission, pneumatic, electric, hydraulic and other driving
methods. Wrench (or handle) is used for manual operation.
Pneumatic, electric, hydraulic, etc. are installed corresponding
drive devices above the ball valve. Please refer to the drive
device manual for specific matters.
The wrench
(handle) can be turned 90° to open and close the ball valve. Turn
the valve stem clockwise to close the valve and turn
counterclockwise to open the valve.
The ball
valve should be stored in a dry and ventilated place, and outdoor
storage is not allowed. Channels at both ends are blocked with
heads to prevent debris from entering.
During
storage, the ball valve should be fully open to protect the ball
sealing surface and the valve seat sealing surface.
If the
ball valve is in a status of long-term storage, it should be
regularly checked to remove the dirt in the inner cavity and
grease the processing surface.
If the
ball valve is installed in the pipeline, it should be checked
regularly to make sure everything is normal. If there is any
problem, you need to repair it immediately.
When the
ball valve used is disassembled and reassembled, KMO reminds that
it must be inspected and tested in strict accordance with the
relevant national standards and issued with a certificate before
it can be used again.
When there
is medium pressure in the ball valve, it is not allow to replace
or add packing, and it is strictly forbidden to disassemble any
parts on the valve and loosen any strong parts, otherwise it may
cause an accident.
The
storage, use, maintenance and troubleshooting of valves shall be
recorded in detail.
It is not
allow to weld, maintain or replace parts under the state of valve
under pressure.
FAQ:
Q: Are you manufacture
or trading company?
A: We are manufacture
and our factory is in in Oubei Town, Yongjia County, Wenzhou
City, Zhejiang Province.
Q: What is your
products' MOQ?
A:
10pcs.
Q: Can you provide the
sample for free?
A: Yes, we can provide
the sample for free, but you need bear the delivery
cost.
Q: If products have
some quality problem, how would you deal
with?
A: We will responsible
for all the quality
problems.
Q:
If the product can be
customized?
A: Yes, just let me
know if you have any requirements, like applicable medium and
size, etc.