Motorised Gate Valve Spec 1f6i4s
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Specifications of the Motorized Gate Valve Description
:
Pressure class Size
: :
Wedge gate valve with rising stem, flanged ends and electric motor operated (full open & full close ) Class 150 or PN 1.6 MPa ( Test Pressure 24 Kgf/cm2) 10” diameter (DN 250)
Type
:
Gate valve
Quantity
:
4 numbers
Actuated by
:
Electric motor ( with hand-wheel provision)
Operating medium Operating temperature
:
Raw Water
:
50 ˚C ( Ambient Temperature)
MOC (Body) : MOC (Stem/wedge/seat ring etc)
Cast steel
Leakage class
:
IV
Actuating time (Fully open to fully closed)
:
~ 20 sec
Matching flanges
:
Enclosure
:
2 nos. for each valve Water tight IP 67, Dust Proof & Corrosion inhibited
:
Alloy Steel/SS
Notes: The valve shall be supplied with matching counter flanges, bolts, nuts & washers. •
Material of construction for major parts shall be provided by vendor.
•
Materials and test certificates shall be furnished.
•
The vendor shall provide the details of the actuator. It can be ROTORK/AWMA or equivalent.
•
Relevant catalogs and drawings shall be furnished along with the quotation
•
The vendor shall provide the list of customer’s references list.
Required Details of electric actuator: •
The supply of valves shall be complete with drive motor of adequate rating, torque and limit switches, gear boxes, clutch, hand wheel (marked with arrows for open-close), shafts and strain releases to suit the type of the valve offered.
•
Actuator shall have local/remote, on & off command provision with status of open, close, torque & fault. It shall have integral /without integral RDOL Starter.
•
The codes and the standards shall be followed are IS 9334-86 (Electric motor operated actuators) and IS 13947-93 (specifications for low voltage switch gear/ control gear)
•
The enclosures shall be suitable for the installation outdoor area as per IP67, NEMA 6, dust type, weather proof suitable for outdoor use without necessity of canopy.
•
The body shall be marked with flow direction.
•
Reversal of the direction of rotation of valves shall be achieved by suitable precision gears or reversing ors starters.
•
The valves shall be suitable for hand wheel operation with suitable interlocks to defeat the electrical operation in case of power supply failure.
•
Motor shall be suitable for three phase 440 V ± 10%, 50 Hz ± 3% supply, squirrel cage induction motor with class F insulation temperature rise limited to class B.
•
Motor shall incorporate features to give burnout protection by direct temperatures sensing. The motor shall be designed for full voltage direct online start, with starting current limited to 6 times full load current. The motor starting torque shall not be less than 500% of rated full load torque.
•
2 nos. of torque limit switches, one for each direction of travel, self locking and adjustable torque type.
•
Auxiliary switches with minimum two NO, two NC shall be provided. All internal wiring shall be done with insulated copper cable with terminal and shall be brought out to a fully sealed electrical enclosure for external wiring. Necessary double compression glands and tinned copper lugs are also included in the scope of supply.
•
Built in push button to close and open and local/ off/ remote selector switch with pad locking facility to prevent unauthorized operation of the valve shall be provided on the valve housing.
:
Pressure class Size
: :
Wedge gate valve with rising stem, flanged ends and electric motor operated (full open & full close ) Class 150 or PN 1.6 MPa ( Test Pressure 24 Kgf/cm2) 10” diameter (DN 250)
Type
:
Gate valve
Quantity
:
4 numbers
Actuated by
:
Electric motor ( with hand-wheel provision)
Operating medium Operating temperature
:
Raw Water
:
50 ˚C ( Ambient Temperature)
MOC (Body) : MOC (Stem/wedge/seat ring etc)
Cast steel
Leakage class
:
IV
Actuating time (Fully open to fully closed)
:
~ 20 sec
Matching flanges
:
Enclosure
:
2 nos. for each valve Water tight IP 67, Dust Proof & Corrosion inhibited
:
Alloy Steel/SS
Notes: The valve shall be supplied with matching counter flanges, bolts, nuts & washers. •
Material of construction for major parts shall be provided by vendor.
•
Materials and test certificates shall be furnished.
•
The vendor shall provide the details of the actuator. It can be ROTORK/AWMA or equivalent.
•
Relevant catalogs and drawings shall be furnished along with the quotation
•
The vendor shall provide the list of customer’s references list.
Required Details of electric actuator: •
The supply of valves shall be complete with drive motor of adequate rating, torque and limit switches, gear boxes, clutch, hand wheel (marked with arrows for open-close), shafts and strain releases to suit the type of the valve offered.
•
Actuator shall have local/remote, on & off command provision with status of open, close, torque & fault. It shall have integral /without integral RDOL Starter.
•
The codes and the standards shall be followed are IS 9334-86 (Electric motor operated actuators) and IS 13947-93 (specifications for low voltage switch gear/ control gear)
•
The enclosures shall be suitable for the installation outdoor area as per IP67, NEMA 6, dust type, weather proof suitable for outdoor use without necessity of canopy.
•
The body shall be marked with flow direction.
•
Reversal of the direction of rotation of valves shall be achieved by suitable precision gears or reversing ors starters.
•
The valves shall be suitable for hand wheel operation with suitable interlocks to defeat the electrical operation in case of power supply failure.
•
Motor shall be suitable for three phase 440 V ± 10%, 50 Hz ± 3% supply, squirrel cage induction motor with class F insulation temperature rise limited to class B.
•
Motor shall incorporate features to give burnout protection by direct temperatures sensing. The motor shall be designed for full voltage direct online start, with starting current limited to 6 times full load current. The motor starting torque shall not be less than 500% of rated full load torque.
•
2 nos. of torque limit switches, one for each direction of travel, self locking and adjustable torque type.
•
Auxiliary switches with minimum two NO, two NC shall be provided. All internal wiring shall be done with insulated copper cable with terminal and shall be brought out to a fully sealed electrical enclosure for external wiring. Necessary double compression glands and tinned copper lugs are also included in the scope of supply.
•
Built in push button to close and open and local/ off/ remote selector switch with pad locking facility to prevent unauthorized operation of the valve shall be provided on the valve housing.
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