Viat Instruments Pvt. Ltd Salt Lake, Kolkata, West Bengal

RAPID PRESSURE RISE RELAY (RPRR) Model 950 and 960 Series     Features Fast and accurate response to sudden increase in pressure. Can operate in as less as ten milliseconds Shock and vibration resistant. Each Relay individually calibrated using sophisticated electronic setup Online computerized graph with every certificate for operating time against various rates of pressure rise.

RADIATOR THROTTLE VALVES For Oil Filled Transformers   Pad Lockable, Forged Steel Body Size : 80mm Bolt On Type, Pad Lockable, Forged Steel Body Size : 80mm Bolt On Type, Economy Model with Cast Iron Body Size : 80mm Welding Neck Type, Pad Lockable, Forged Steel Body Size : 80mm Zero Leakage, Bolt On Type with Aluminum Body, Size : 80mm Zero Leakage, Welding Neck Type, Steel Body Size : 125mm (5 inch) Zero Leakage, Flange Type,  Steel Body Size : 125mm (5 inch) Zero Leakage, Bolt On Type, Pad Lockable, Forged Steel Body Size : 80mm

Large and Medium Pressure Relief Valves and Devices With/Without Contacts     Model T-50 (50mm) , T-80 (80mm) without Switch Model T-50 (50mm) , T-80 (80mm) with Switch PRV Type T-50 (50mm) With Integrated Switch & Cover PRV Type T-50 (50mm) & T-80 (80mm) with Switch & Threaded/Flange Type Direction Shroud PRV Type T-2 (50mm) to T-6 (150mm) PRD for Power Transformers Model-305 Size: 150mm Direction Shroud for 150mm PRD  

Pressure Relief Valves for Oil Filled Distribution Transformers     Pressure Relief Valves 301-3 Series PRVs for Krytox Lubricated Transformers using FR3 Oil High Flow Pressure Relief Valves Economy Pressure Relief Valves in Aluminum Body

MAGNETIC OIL LEVEL GAUGES With Contacts for Oil Filled Distribution & Power Transformers     Magnetic Oil Level Gauge with radial float movement and plug in connection Dial Size - 3.5" (100mm) and 6" (150mm) Magnetic Oil Level Gauge with radial float movement and terminal box connection Dial Size - 3.5" (100mm) and 6" (150mm) Magnetic Oil Level Gauge without contacts, with radial float movement Dial Size - 3.5" (100mm) Magnetic Oil Level Gauge with radial float movement Dial Size - 100mm and 140mm Magnetic Oil Level Gauge with axial float movement Dial Size - 100mm and 150mm Magnetic Oil Level Gauge for conservator with air bag Dial Size - 150mm Magnetic Oil Level Gauge with axial float movement suitable for conservator with air bag Dial Size - 250mm 

LIQUID LEVEL INDICATORS For Oil Filled Distribution Transformers   Oil Level Indicators Square Flange Type Level Indicators Magnetic Type Oil Level Indicators for hermetically sealed transformers Vertical Protection Relay for hermetically sealed transformers

Type : Liquid Level Indicators

Material : Alloy Steel, Brass, Stainless Steel

Certification : ISI Certified

Application : Testing Water Level

Color : Black, Grey, Silver, White

Condition : New

Display Type : Analog, Digital

Automatic Grade : Automatic

Measuring Range : 100-200mm, 200-300mm, 300-400mm

Gauge Diameter : 20-40mm, 40-60mm, 60-80mm

Guage Size : 2inch, 4inch, 6inch, 8inch

GAS ACTUATED RELAY (Buchholz Relay) With Magnetic Reed Switch for Oil Filled Transformers     Mounting dimensions and test parameters to DIN standard. Aluminum alloy housing. Functional test of alarm and trip contact possible even without filling the relay with oil Unique internal design of housing prevents false air traps on top of the relay Well designed internal layout gives clear view of colour of gas inside the relay through glass window for fault analysis. Bucket type float design with inherent ability to withstand vacuum treatment of transformers Built in test facility for checking continuity of both alarm and trip circuits Anti vibration mounting pads and magnetic switches gives high stability against mechanical shocks and vibrations.

DRAIN VALVES FOR DISTRIBUTION TRANSFORMERS     1" NPT Valve with Sampler 1" NPT Valve with Sampler, plug and nipple Sampler Valves- 1/2 inch NPT                         3/8 Inch NPT

Type : Gate Valves, Ball Valves, Globe Valves

BIMETAL THERMOMETER AND PRESSURE VACUUM GAUGE For Oil Filled Distribution Transformers     Bimetal Thermometer without contacts - vertical mounting on top cover Dial Size: 80mm and 100mm Bimetal Thermometer without contacts - horizontal mounting on side wall of transformer Dial Size: 100mm Bimetal Thermometer with maximum pointer, trip contact and alarm. Vertical mounting/horizontal mounting models available. Pressure Vacuum Gauge without contacts. Thread size 1/4" NPT Pressure Vacuum Gauge with contacts. Thread size  G 1/2"