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GAS
OVER
OIL
ACTUAT
OR
GOV
SERIES
GAS OVER OIL
With the in-house capability to manufacture the complete line of control components, Rotex guarantees....
FEATURES
• Gas driven system - Sour Gas can be used for Gas Over Oil application - Gas pressure up to 2000 psi
• Storage tank for extra operation - Secondary storage tank permits up to 3 operations - Manual valves and NRV are used for preventing gas to escape one of the line pressure
• Electrically or mechanically operated • Large range of operating systems are available • GOV can be installed on DRS, DRV, HYV or any
other make of actuators • All pressure parts are as per ‘PED’ and available
with certifications • Recommended oil “Aero Shell Fluid 4” or equivalent • GOV panel can be completely gas pressure based.
In such cases the manual valves are used for controls • Solenoid operated GOV panel can be used for remote
operations. SCADA connectivity available
• Gas Over Oil panel with hydraulic • Gas Over Oil with hydraulic tank, line break
control tank, safety reservoir
Specifications are subject to change without notice
GAS OVER OIL
....a highly reliable ‘GOV’
• ROTEX GOV can also be used for linear actuator for rising stem valves
• ISO mounting for direct mounting available on the basis of model selected for actuator
• Standard temperature -20 °F. Special up to -55 °F • All parts are manufactured from approved material as per NACE
(MR-01-75) suitable for sour gas • All valves are zero leak construction. We use high pressure PTFE
sealing system, poppet and spool construction for higher reliability • Manual override is possible with : - Hydraulic options, to pump by hand to open or close - Gas storage tank for 2-3 operations - Manual overrides on solenoid valves to function the open/close
Operation • Complete panel in stainless steel with all internal in stainless steel
(for gas wetted parts) is available • Gas filtration/ dehumidification filters are installed within the panel • System can be configured for line breakage control valve and torque
control valve depending upon the system requirements
• Gas Over Oil control system with various options • Gas Over Oil with built in torque control device
Specifications are subject to change without notice
GAS OVER OIL
GENERAL FEATURES
• Line break control integrated with manual reset function. On exceeding the leak rate, the LBC valve operates shutdown valve and closes the main valve. Requires manual reset
• Torque control ensures that the actuator does not exceed the maximum seal torque for stem
• On line filter for long life of components • PED approved oil tanks • Gas reservoir for operation of actuator on
absence of main steam pressure • Solenoid operated system can be operated
remotely
SCHEMATIC - 1
GAS OPERATED SYSTEM
FEATURES
• Manual valve for open/ closed • Line break control valve with normal reset
function • Functional valve for logic • Torque control valve will ensure torque of
actuator never exceeds the maximum stem shear torque (MSST)
SPECIFICATION
Pressure : 0 - 240 bar
Control : 40 - 240 bar
Sensitivity forward : 1 bar
Sensitivity Reversed : 30 bar
Manual reset : built in
Ports : 1/4”, 3/8”, 1/2”, 3/4”, 1”
Specifications are subject to change without notice
GAS OVER OIL
• Solenoid rest on LBC system optionally, is
available • Limit Switch feedback, solenoid operation is
SCADA ready
• PROFI DP/ DEVICENET/ MODBUS networking available
• Manual Override for open and close is integrated in the hydraulic circuit
SCHEMATIC - 2
ELECTRO GAS OPERATED SYSTEM
14 2
LOCAL RESET
15 16
4
13 6 3
5 5 3
CLOSE 12
OPEN
11
10 9 8
7
CUSTOMER ELECTRICAL CONNECTION
1
FEATURES
• Field control/ control room • SCADA controls can be adopted • Exd - ATEX solenoid valve • Line break control function can be integrated • Maximum torque output control available
SPECIFICATION
Pressure : 0 - 240 bar
Control : 40 - 240 bar
Sensitivity forward : 1 bar
Sensitivity Reversed : 30 bar
Manual reset : built in
Ports : 1/4”, 3/8”, 1/2”, 3/4”, 1”
Specifications are subject to change without notice
GAS OVER OIL
TORQUE CONTROL VALVE
• The torque control valve is used for limiting the torque generated by the actuator to avoid the torques exceeding maximum stem shaft torque
• Torque control can be set using the set screw • In event of the torque exceeding the limits, it will first
try to block it. If the torque exceeds the limit beyond this point, it would exhaust the gas pressure into the atmosphere
• Only the stroke in the opposite direction would reset the valve
SPECIFICATION
Main valve : 1/4” 3/8” 1/2” 3/4”
Control pressure : 20 to 70 bar
Sensitivity : ± 4 bar
Main pressure : 0 - 220 bar
Response Pressure: 5 bar
LINE BREAK VALVE
• The differential - pressure valve is leakage free, block type poppet valve for the use in line break - systems
• Valve can be easily set using a secondary storage tank
• Manual reset function allows customer to reset the valve at site
• Solenoid reset available as option
SPECIFICATION
Valve size : 1/4”, 3/8”, 1/2”,3/4” Pressure range of switching valve : 0 - 140 bar
Max. Differential pressure (A-B) : 80 bar
Switching differential pressure : 0.5 to 5 bar
Size : 4 mm
Temperature range : -30 °F to +80 °F
Sensitivity : 0.1 bar/ min
ELEMENTS
FILTERS
5m/ 25mfilters optionally installed in line for gas filtration Maximum working pressure 220 bar
LOGIC VALVES
1/4”, 3/8”, 1/2”, 3/4” logic valves can be used, depending upon the flow and operation needed. Valves can be individually tubed or can be sub base mounted
Specifications are subject to change without notice
GAS OVER O
Specifications are subject to change without notice IL
DIMENSIONAL DETAILS
Specifications are subject to change without notice
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ROTEX MANUFACTURERS &
ENGINEERS PRIVATE LIMITED
Manpada Road, Dombivli (E) - 421204
Maharashtra, INDIA.
Ph. : +91 251 2871033/ 2871390/ 2871196/
2871989/ 2870890/ 2870663
Fax : +91 251 2871191
E-mail : [email protected]
ROTEX AUTOMATION LIMITED
UNIT 1
987/11, GIDC Makarpura,
Vadodara - 390010, Gujarat, INDIA.
Ph. : +91 265 2638136/ 2638795/ 46
Fax : +91 265 2638130
Email : [email protected]
UNIT 2
C - 1 B/ 1501, 4 & 5, GIDC
Vithal Udyognagar - 388121,
Gujarat, INDIA.
Ph. : +91 2692 236224/ 236292/ 236399
Fax : +91 2692 236442
Email : [email protected]
www.rotexindia.com