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| Safety Valve: |
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Safety valves are overpressure protection devices for
protecting personnel and equipment, and usually installed in HP
operation line for cementing/fracturing pumps, pressure vessels and
other equipment under HP and high displacement. The preset pressure
value ranging 5000psi to 15000psi(35MPa to 105MPa) is adjusted through
the top nut. When pumping pressure or operating pressure exceed the
preset value, the safety valves will automatically open for pressure
release. While the pressure is less than the preset value, they will be
automatically closed. |
| Gate Valve: |
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Gate valves are mainly used for control
of fluid flow in drilling well control system and drilling fluid
manifolds (such as, kill manifolds, choke manifolds, mud manifolds and
standpipe manifolds).There are two types of valves: visible and
invisible bar type. They can be manually or hydraulically operated.
The model of plate gate valve available is as
follow:2-1/16"、2-9/16"、3-1/8"、4-1/16"，rated:
5000psi(35MPa)～15000psi(105MPa. |
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◆ Low opening torque is needed while under pressure;
◆ End connections are flange, thread or union , and meet the
requirements of API;
◆ Valve plates and seats have high hardness and good wear-resistance
performance;
◆ Valve is an integral forging with high strength, load-bearing capacity
and long service life, and suitable for sour environments including
offshore drilling operations. |
| PLATE GATE VALVE AND
WEDGE GATE VALVE: |
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The designs are conformed to the latest
SY/T5127-2002,metal to metal seal is used between the body and the
bonnet,metal seal or non-metal seal is used between the seat and the
gate plate as needs. Back seal is set between the stem and the bonnet in
order to replace the fill of the valve-stem when the valve bears
pressure.The seal surface is welded with hard alloy of corrosion
resistance and impact resistance.
For the parallel gate and the seat with preloaded spring ,operation
torque is little.
The wedge valve gate is sealed by wedge seal surface ,it can adjust fit
compactness between the seal surfaces by loading with a handwheel.
.Working pressure(psi):2000～15000
.Nominal Bore(in): 2 1/16～4 1/16
.Working Temperature:K.V
.Material Class:AA～FF
.Product Specification Level:PSL1～4
.Performance Requirement Level:PRl～2 |
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| Plug Valve: |
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Plug valves, forged of quality high strength alloy
steel, are low torque valves based on the technologies introduced from
SPM. 1",2"and 3" plug valves with rated working pressure of
6000,10000,15000 psi(42,70,105MPa) are available. They can work in
normal temperature, low temperature or H2S environments.
The model of plug valve available:
SF42-1"×2"、SF70-1"×2"、SF105-1"×2"、SF42-2"×2"、SF70-2"×2"、SF100-2"×2"、SF42-3"×3"、SF70-3"×3"、SF105-3"×3"，rated:
6000psi(42MPa)～15000psi(105MPa). |
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◆ End connections of plug valves with
sizes in English system may be union or male/female thread (LP,TBG), and
they can be freely connected with products in international market;
◆ Maintenance and repair of valve body can be done without removal, and
no special tools are needed for removal;
◆ The plugs have very good sealing performance；
◆ Visible: There is a visible positioner where we can see if valve is
open or closed. Brake spring will limit the position of valve;
◆ 3"hand wheel opener is suitable for opening in low temperature. Valves
can be opened freely and flexibly. |
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