1 Specifications of the Motorised Gate Valve Description : Wedge ...

More documents

Recommendations

Info

Bolting (Internal) : Stainless steel, AISI-304End connections : Flanged to ASME B 16.5Flow control lever (std) : SteelGland Packing : Graphited AsbestosSeal retainer : SS 304Fasteners : Stainless SteelGear unit : Worm typePneumatic Actuator detailsActuation should be through air aided spring return pneumatic piston actuator with airaccumulator and necessary accessories for faster operations.The valve should close in case of either electrical or command air failures (fail to close)Available air pressure 6 to 8 barActuator should have manual override.I/P CONVERTER: I/P converters shall be provided. I/P converters shall be suitable forconverting 4-20 mA DC signal to 0.2 - 1 kg/cm². Enclosure protection class shall be IP-65.Positioner: Pneumatic Positioner shall be force balance type and shall be side mountedon the yoke of the value. Positioner shall be field conversible from direct to reverse acting.Positioner shall be provided with bypass where output signal to valve actuator is one eachfor air supply, control signal and output signal to actuator. Pneumatic connections shall be¼ “ NPT, ANSI B2.1.Position transmitter: Electronic smart position transmitter shall be provided. Positiontransmitter shall be suitable for converting 0 to 100 % position into 4-20 mA DC signal.24 V DC excitation should be two-wire loop. Enclosure protection class shall be IP-65.GeneralThe valves shall be supplied with matching counter flanges (Carbon Steel). The valvesshall be suitable for both horizontal and vertical installation.The vendor shall quote the price for valve and separately mention the applicable taxes,duties, and etc transportation up to NAL, Bangalore.6
The valves shall be offered for inspection and pressure testing, by NAL Engineers atvendors place as per standards.The vendor shall provide the list of customers using their valvesThe vendor shall separately quote for smart positioner if available.Data to be furnished along with the tender1. Make & model of butterfly valve with relevant data sheets/drawing and brochure.2. Code/Standard for design/testing.3. Type4. Material of construction for all components5. End connection, flange details and code followed6. Pressure rating7 Weight8 Delivery schedule9 Schematic diagram10 Actuator details11 QAP12 List of commissioning spares, if required during commissioning time.13 Whether accredited with ISO 9002.14 Spares required for trouble free operation for two years7
Page 1: Specifications of the Motorised Gat
Page 4 and 5: • Auxiliary switches with minimum
Page 8: Requirements of Gate Valves:Sl.No.M

1 Specifications of the Motorised Gate Valve Description : Wedge ...

Create successful ePaper yourself

Delete template?

Save as template?