Replacement of Chilled, Condenser Water Valves and Provision of other Accessories in HVAC System at NAC-1 Block, IIT Madras

CHILLED WATER VALVES

Supply & replacement of Valves, Gauges, Strainers, & Flexible connections, etc. for Chilled water plumbing duly insulated to the same specifications as the connected piping and adequately supported as per specifications.

Supply & replacement of Butterfly valves with CI body SGI (Nylon Coating) disc, EPDM Seat PN16 pressure rating for chilled water circulation complete with companion flanges, nuts, bolts, gaskets etc. as required. Note: size from and above 200 mm dia will be gear operated

100 mm dia

150 mm dia

250 mm dia

Supply & replacement of Balancing valve with built in measuring facility with CI body flanged construction with EPDM coated disc with long pitch with protected out pipe insulation & PN 16 pressure rating for chilled water circulation complete with companion flanges, nuts, bolts, gaskets etc. as required.

100 mm dia

150 mm dia

Supply & replacement of Dual plate type check valves (NRV), PN16 pressure rating for chilled water circulation complete with companion flanges, nuts, bolts, gaskets etc. as specified. in position conforming to standard specification.

100 mm dia

150 mm dia

Supply& replacement of MS fabricated "Y" type strainers with removable type bronze screen with 3mm perforation & permanent magent etc. PN16 pressure rating for chilled water circulation complete with companion flanges, nuts, bolts, gaskets etc. as specified. in position confirming to standard specification.

100 mm dia

150 mm dia

Supply& replacement of flanged type flexible connections of suitable pressure rating (PN 16) to be installed at primary/secondary chilled warter pumps suction & discharge, Chiller inlet & outlet, AHU inlet & outlet, and at pipes crossing building expansion joints.

100 mm dia

150 mm dia

Supply& replacement of Motorized Butterfly Valve with CI body, DI Disc and minimum PN16 pressure rating confirming to BS 5155, IS 13095 along with Actuator having IP 67 protection for outdoor application, capable of accepting up to 10V DC and up to 20mA electric input signal & shall provide similar transduced feedback output signal to control system i/c Control wiring, transformer etc as required. (Compatible existing BMS system)

100 mm dia

150 mm dia

CONDENSER WATER VALVES:

Valves, Gauges, Strainers, & Flexible connections, etc. for Condenser Water Circulation and adequately supported as per specifications.

Supply & replacement of Butterfly valves with CI body SGI (Nylon Coating) disc, EPDM Seat PN16 pressure rating as specified. Note: size from and above 200 mm dia will be gear operated.

32 mm dia

65 mm dia

200 mm dia

Supply & replacement of Motorized Butterfly Valve with CI body, DI Disc and minimum PN16 pressure rating confirming to BS 5155,IS 13095 along with IP-67 Actuator capable of accepting up to 10V DC and up to 20mA electric input signal & shall provide similar transduced feedback output signal to control system i/c Control wiring, transformer etc as required. (Compatible existing BMS system)

200 mm dia

Supply & replacement of NON - RETURN VALVE with dual plate of C I body SS plates vulcanized NBR seal flanged end & PN 16 pressure rating as specified.

200 mm dia

Supply & replacement of Balancing valve with built in measuring facility with CI body flanged construction with EPDM coated disc with long pitch & PN 16 pressure rating for condenser water circulation complete with companion flanges, nuts, bolts, gaskets etc. as required.

200 mm dia

Supply, replacement, testing and commissioning of Y - Strainer of Ductile CI Body flanged ends with stainless steel strainer for chilled / hot water circulation including insulation as specified.

200 mm dia

Supply & replacement of flanged type flexible connections of suitable pressure rating (PN 16) to be installed at condenser pumps suction & discharge, Chiller inlet & outlet, and at pipes crossing building expansion joints.

200 mm dia

Supply & installation of mercury filled 'V' form thermometer with copper well of approved make complete as required.

Supply & installation of Industrial pressure guages with appropriate range with gun metal/brass valve of approved make complete as required.

Supply & installation of auto air vent valve with cock or ball valve of 25mm size

Supply & installation of ball valves for drain of following sizes ( DRAIN VALVE)

25 mm dia

Supply & installation of Immersion Sensor / Thrermowell

Supply & installation of Water flow switch in the Condenser/Chilled water line as required(Compatible existing BMS system)

Supply & installation of Digital Thermostat (Compatible existing BMS system)

Supply & Installation of Green 3 PICV 40mm dia with Actuator (Make: Flowcon)

Supply and installation of Controller for VAV (Compatible existing BMS system)

FRP Coating (2 Layers) for Existing Condenser Water Pipes - Specification: Cleaning the existing pipe surface, removing rust/dirt/oil, ensuring dryness, and applying two layers of FRP using CSM 450 GSM with unsaturated polyester resin, fully impregnated and rolled to remove air bubbles. Total thickness: approx. 2.5–3.0 mm.

300mm dia

200mm dia

100mm dia

65mm dia

32mm dia