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| Pressure Balanced Plug Valve |
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| Product Description |
| In-Line Maintenance
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| Operation |
| End Connections
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| Valve Lubricant
Selection Guide |
| Valve Dimentional
Drawings |
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| RASHTRIA Pressure
Balance Plug Valves have been developed to reduce the operating
torue in Plug Valves without compromising on the in-line maintenance
capability.The plug and body seating surfaces, which are lapped
and matched , are not exposed to the line fluid while valve is
open condition,this confines corrosion and erosion to less critical
areas.Sealing is further enchanced by specially developed plug
sealents charged evenly around the seating surfaces.The plug is
impregnated with P.T.F.E. which provides greater wear resistance
and ensure consistent operating torque. |
| PRODUCT DESCRIPTION
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| In pressure balanced
Plug Valve,pressure balancing is achived by providing two holes
in the plug connecting the chambers at each end of the plug.The
chambers,one fitted with a non-return valve,acts as a balancing
mechanism for the plug.The pressure at the large end always equals
the line pressure.The pressure at the small end is always equal
to or greater than line pressure and minimise resultant upward
force. |
| IN-LINE MAINTENANCE
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| Pressure Balanced
Cast Iron Plug Valves offer the in-line maintenance which elimanates
the need to wait for a shutdown.All valves are offerd with an
improved sealent charging system which consists of a button head
screw for gun charging. |
| OPERATION [
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|
Pressure Balanced Cast Iron Plug Valves
are supplied with Double 'D' stems suitable for wrench operation
However wrenches should be ordered seprately.A
square adapter can be fitted to the stem, on request ,if the
valve is to be operated by a square headed wrench.
RASHTRIA CAST IRON Pressure Balanced Plug
Valves are supplied with RASHTRIA-300 plug sealent suitable
for most services other than acid solutions and hydrocarbons.Valves
are also supplied with RASHTRIA-200 Plug sealent which is suitable
for hydrocarbon services.
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| END CONNECTIONS
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| Valves can be offered
with flanged ends to the following Standards : |
| Flanged : To match flanges drilled
to BS 10 Table 'D' , ASME/ANSI B 16.1 Class 125 , DIN PN 10 or
4504 PN 10 |
| Valves can also be offered with
undrilled flanges. |
| Size 6" and above
have some holes (refer drg.) tapped on each flange to facilitate
fasteninf of mating flanges and require studs of same diameter
of the bolt which they replace.The tapping is to UNC threads for
Class 125 & Table 'D' flanges and ISO metric for PN 10 flanges. |
| VALVE LUBRICANT SELECTION
GUIDE [ back to top
] |
| Lubricated
Sealing Compounds for Lubricated Plug Valves |
| VALVE DIMENTIONAL
DRAWINGS [ back to
top ] |
| Cast
Iron Pressure Balanced PLug Valve -Short Pattern - Inverted Type |
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