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Top Guided Single Seated Series Control
Valve
GYL-20000 series Top Guided Single Seated Control Valve,the trim is
interchangeable in body.It’s content to various technics liquid
process by replacing the different trim assembled.moreover the trim
in the valve are interchangeable between GYL-20000 series control
valve with GYL-40000 series Cage Guided control valve.
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Technology brief introduction
◆Top Guided Single Seated Control Valve is the furthest common
control valve type, simple structure,are used for strict sealed
close situation.single application valve can be controled the
Maximum flow rate by changing the size of plug and seat ring.setting
fluid characteristics by changing the curved surface. They are
applicable in a wide scope of liquid services as well as steam/gas
services.
◆As a result of high-pressure fluid is generally holded the load to
add the whole area of bottom seat,made the single plug to be endured
huge Unbalanced force from fluid,relative to the control valve with
Balanced trim,the allowable pressure drops is much less for single
seated valve on the Process Control.
◆GYL-20000 series have some kinds Connecting format: Flanged (BF,RJ,
concavo-convex); Weld ends (2 " below to be SW, 3" over to be BW)
◆GYL-20000 series have favorable Interchangeability,be reached
different flow characteristics by replacing different trim,to get
much higher Precision of Control.and by replacing to be GYL-40000
series trim,can be increased the maximal allowable pressure drops on
the circumstance of same actuator output thrust,and reducing noise,
and dispelling or reduce the effects of cavitation.
◆Single seated valve size is 3/4″-8″, actuator for standard
diaphragm type, although smaller size are in common use,but the
biggest size is for 12″, therefore should collocate actuator with
more thrust,when selected the biggest size single seated valve.
◆In the case of Cryogenic Service,it’s showed choiceness for single
seated valve trim structure. Extraction type cryogenic valve is the
most characteristic performance of single seated valve. In no
contact with the valve body and bonnect,trim can be extracted for
replacing and maintenance.
◆Among different type valve body,single seated valve have trim
structure with the eastist collocation.for example, angle valve.
◆GYL-20000 series have some standard pressure grade. JIS， ANSI•CLASS，JB/T79-94
◆ By metal seat,the suitable temperature range is -196℃?+538℃,and
by soft seat,the suitable temperature range is -45℃?+200℃。
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| GYL-20000 series
control valve body/trim use range |
| Trim type |
Body type
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Size |
Pressure
ratings |
Standard close
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range
Application |
| Economy type top guided
Unbalanced trim Screw seat ring |
GYL-21100
GYL-22100
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3/4'' ～8''
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CLASS
150～600#
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CLASS Ⅳ (standard type,
metal seat) CLASS V (optional type, soft seat)
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It can be used to normal or
heavy duty services,tight closed,to control each fluids or
gas.suitable temperature range is -196℃?+538℃(by soft seat,the
suitable temperature range is -45℃?+200℃.) |
| High loaded type top guided
Unbalanced trim cage pressure seat ring Quick release structure |
GYL-21200
GYL-22200
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3/4'' ～8''
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CLASS
150～600#
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CLASS Ⅳ (standard type, metal
seat) CLASS V (optional type, soft seat)
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each fluids or gas with
higher pressure drops .suitable temperature range is -196℃?+538℃(by
soft seat,the suitable temperature range is -45℃?+200℃.) |
| High performance type top
guided Unbalanced trim cage pressure seat ring releasing pressure
plug Quick release structure |
GYL-21300
GYL-22300
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4'' ～8''
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CLASS
150～600#
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CLASS Ⅳ (standard type, metal seat)
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Heavy loaded,it can be used to
normal or heavy duty services,tight closed,to control each fluids or
gas with higher pressure drops or huge flow aliblity and micro-
regulated .suitable temperature range is -45℃?+200℃. |
Cut-off type top guided
Unbalanced trim cage pressure seat ring active plug Cut-off type
structure
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GYL-21400
GYL-22400 |
1'' ～8'' |
CLASS
150～600# |
CLASS Ⅳ (standard type, metal
seat) CLASS V (optional type, soft seat) |
Heavy loaded,it can be used to
normal or heavy duty services,tight closed,suitable to cut-off
control of each fluids or gas.suitable temperature range is -196℃?
+538℃(by soft seat,the suitable temperature range is -45℃?+200℃.) |
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