Highlight: Welded Ball Valve
Product introduction:
The welded ball valve is an integral welded ball valve formed by
pressing carbon steel seamless steel pipes. The valve
stem is made of AISI303 stainless steel, and the ball is made of
AISI304 stainless steel, which are finely processed and
ground to have excellent sealing performance and corrosion
resistance. The sealing adopts a carbon-reinforced PTFE
inclined elastic sealing ring that is negatively pressured on the
spherical surface, achieving zero leakage in sealing and
long service life. The welded ball valve offers multiple connection
methods for users to choose from, such as welding,
threading, and flanging. It can adopt transmission structures like
handles, turbines, pneumatics, and electrics for actuation,
featuring flexible and lightweight switching.
Product technical parameters:
Nominal Diameter DN (mm) | 15~100 |
Nominal Pressure PN (MPa) | 1.6 |
Test Pressure (MPa) | Strength (water) | 2.4 |
Enclose (Water) | 1.76 |
Main Components | Body | WCB/CF8/CF8M |
Valve ball | Stainless steel/Carbon steel |
Seat | PTFE |
Packing | Soft graphite |
Shaft | 2Cr13 |
Handle | Ductile iron |
Working temperature | ≤150℃ |
Medium suitable | Water, oil, steam |
Product features:
1. Welded ball valve body uses the all welded structure, there won’t
be the phenomenon such as external leakage, the valve structure is
more compact, easy installation.
2. Low operating torque: valve adopts has the self-lubricating backing
PTFE metal collar, small friction torque, to ensure that the valve
to operate under the condition of the low torque.
3. Double block and excretion function (DBB): both sides of the valve
in the closed position and the ball under pressure at the same
time, the body lumen of medium (water, gas or oil etc) from the
drain valve discharge.
4. Double piston effect seat structure design: both sides of the seat
under the action of pressure seal (double piston effect) double
sealing seat design features, once the upstream seat is damaged and
leakage, medium pressure on the downstream side into the valve
cavity, the seat into the sphere close contact, can seal the
downstream seat.
5. Reliable seating, structure of floating seat, the seat can be
freely floated along the center-line of the valve, for two-way
valve seal, under the condition of low pressure, initial seal were
obtained through the seat after the spring load, with the increase
of pipeline pressure, supplemented by spring force after the seat
ring, to keep close contact with the ball seat, reliable sealing
effect, seat sealing adopts combined sealing structure, primary
sealing can effectively prevent solid particles of the sealing
surface is damaged, the secondary seal is rubber ring seal, can
guarantee to achieve “zero” leak valve sealing requirements,
according to the operation condition, the seat can be embedded in
polymer engineering plastic seals.
