We are India based one of the most prominent source
for Duplex Stainless Steel Plug Valves. We are manufacturers, suppliers
of Duplex Steel Plug valves from more than a decade and manufacture
all duplex steel valves strictly as per set international standards
and technical specifications.
understand and have a brief information about DSS Plug Valves .Duplex
steel Plug Valve is a quarter-turn rotational motion metal body Valve
(The plug is rotated a fourth of a full turn to change from open to
shut positions, therefore the ports are typically at opposite ends
of the body. This makes this kind of plug valve a quarter-turn valve)
that use a tapered or cylindrical plug to stop or start the flow.
In the open position, the plug-passage is in one line with the inlet
and outlet ports of the Valve body in this type or design of valves.
If the plug 90° is rotated from the open position, the solid or
blank part of the plug blocks the port and stops the flow. We can
say that Duplex steel Plug valves are similar to Ball valves in operation,
but not in design. The only difference in both this type of valves
is we have plug to stop or start the flow in plug valves where as
we have ball to stop or start the flow in Duplex steel ball valves.
The simplest and most common general type of Duplex
steel plug valve is a 2-port valve, which has two positions, open
to allow flow, and closed (shut) to stop flow. In this design ports
are openings in the valve body through which fluid can enter or leave.
The plug in this kind of duplex steel valve has one passageway going
through it. There is often a mechanism limiting motion of the handle
to a quarter turn, but not in glass stopcocks.
Types of Duplex Stainless Steel Plug Valves
DIN Flanged Sleeved Plug Valves
Three Way Plug Valve
Four Way Plug Valve
ANSI Plug Valve
API Plug Valve
Eccentric Plug Valve
Lift Plug Valve
Lubricated Plug Valve
Orbit Plug Valve
Pressure Balance Plug Valve
ANSI Flanged Sleeved Plug Valve
We are manufacturers and suppliers of Plug valves
in a non lubricated and lubricated design and with several styles
of port openings. The port in the tapered plug is normally rectangular,
but we can also manufacture plug with round ports and diamond ports.We
do manufacture and supply Plug valves with cylindrical plugs. The
cylindrical plugs ensure greater port openings equal to or larger
than the run pipe flow area.
Lubricated Plug valves are provided with a cavity
in the middle along there axis. This cavity is closed at the bottom
and fitted with a sealant-injection fitting at the top. The lubricant
in effect becomes a structural part of the Valve, as it provides flexible
and renewable seat.
Non lubricated Duplex Steel Plug valves contain an
electrometric body liner or a sleeve, which is installed in the valve
body cavity. The tapered and polished plug acts like a wedge and presses
the sleeve against the body. Thus, the nonmetallic sleeve reduces
the friction between the plug and the valve body.
Rectangular port plugs are the most common port shape in duplex steel
plug valves. The rectangular port represents 70 to 100 % of the internal
run pipe area. Round port plugs have a round opening through the plug.
If the port opening is the same size or larger than the inside diameter
of the run pipe, a full port is meant. If the opening is smaller than
the inside diameter of the pipe, a standard round port is meant. Diamond
port plug has a diamond-shaped port through the plug and they are
aventurine restricted flow types. This design is suitable for throttling
Typical applications of Duplex Stainless Steel Plug valves
Duplex Stainless Steel Plug Valve can be used in many different fluid
services and they perform well in slurry applications. The following
are some typical applications of Duplex Steel Plug valves:
Air, gaseous, and vapor applications
Natural gas piping
Oil piping applications
Vacuum to high-pressure applications
Advantages of Duplex Stainless Steel Plug valves:
Duplex Stainless Steel Plug valves are Quick quarter turn on-off
Duplex Stainless Steel Plug valves creates minimum resistance to flow
Duplex Stainless Steel Plug valves are Smaller in size than most other
Disadvantages of Duplex Stainless Steel Plug valves:
Duplex Steel Plug valves requires a large force to actuate, due
to high friction.
NPS 4 and larger Duplex Steel Plug valves requires the use of an actuator.
Due to tapered plug we get reduced port in Duplex Steel Plug valves
Neev Valve brand is following strict quality control and manufacturing
process according to international standards and that is why our valves
are widely being sued in various industrial sectors directly or indirectly.
We are manufacturing all duplex steel plug valves with strict quality
parameters and follow internations technical standards and tthat makes
us most prominent sourc of supply to all industrial sectors.
Oil & Gas
Pipe Line Projects
Countries where Neev Valves can supply Duplex Steel Plug Valves
Neev Valves Welcomes Distributors for Duplex Steel Plug Valves