Highlight: Stainless steel globe valve with bevel gear flange
Product introduction:
Globe valve, also known as shut-off valve, is a type of forced
sealing valve. The valve stem axis of the globe valve is
perpendicular to the sealing surface of the valve seat, and the
valve is opened and closed by driving the valve core up and down.
Its opening and closing member is a plug-shaped valve disc, with a
flat or conical sealing surface. The valve disc moves linearly
along the center line of the valve seat, so when the valve is
closed, pressure must be applied to the valve disc to force the
sealing surface to prevent leakage
When the globe valve is opened, the opening height of the valve
disc is 25% to 30% of the nominal diameter. The flow rate has
reached its maximum, indicating that the valve has reached its
fully open position. Therefore, the fully open position of the
globe valve should be determined by the travel of the valve disc.
Product technical parameters:
Diameter nominal (mm) | 15～300 |
Pressure nominal (MPa) | 1.0～6.4 |
Pressure test Ps(MPa) | Strength test | 2.4～9.6 |
Sealing test | 1.8～7.0 |
Medium applicable | Water, steam and oil etc. |
Working temperature | -29℃～425℃ |
Connection method | Flange |
Product features:
1. In terms of structure, globe valve is simpler than gate valve.
There is only one sealing surface on the valve body and valve disc,
which has good manufacturing technology and is easy to manufacture
and maintain.Globe valve in the full closing process of the disc
travel is small, its height is relatively small gate valve.
2. The opening height of the globe valve is small in the opening
and closing process. The opening height is generally only 1/4 of
the diameter of the valve seat channel and has very reliable
cutting action, which is easy to adjust the flow.
3. From the service life, once in the open state, there is no
contact between the seat and the sealing surface of the disc, the
sealing surface is not easy to wear and scratch, so it improves the
service life of the seal.
4. The globe valve only allows one-way flow of media, directional
installation, the length of the globe valve structure is greater
than the gate valve.
5. The opening and closing torque of globe valve is large and it is
difficult to realize fast opening and closing. Moreover, the flow
passage in the valve is tortuous and the fluid flow resistance is
large, resulting in a large loss of fluid power in the pipeline.
6. When the medium from below the valve disc into the valve, the
operation force needs to overcome the resistance, is the friction
of the stem and packing and the thrust produced by the pressure of
the medium.
7. Globe valve closing valve force is larger than opening valve
force, so the stem diameter should be large, otherwise stem top
bending failure will occur.
Our Advantages:
