Automatic Control Valves

• Digital Control Valve:

Digital control valves are multi stage set-stop valve. Digital Control valves is an electrically actuated, hydraulically operated multi-function control valve.

• Digital Control Valve (Piston Type):

Models No.:- DA-P-9881P (Pneumatic Operated) & DA-P-9881H (Hydraulic Operated)
Size:- 2”, 3”. 4” & 6”.
Pressure Class:- ANSI 150# & 300#.

• Deluge Valve:

DEVaaM make deluge valves are hydraulically actuated pilot operated diaphragm control valve. Available in 2 basic design DA 210 Straight pattern & DA 2100 Angle pattern, all internal parts like cover are 100% same in both the designs. These valves are Mfg. with Dry Trim (Pneumatic Actuated) & Wet Trim (Hydraulic Actuated). Both options are available with Electrical Trim solenoid Actuated Model DA 210-B All trims are factory piped on the Valve itself. It also has Manual Station as Test Trim, Manual Override and Drain Line. The valve opens on demand to provide water flow to the fire protection sprinkler system. Pilot system can be hydraulically, pneumatically or manually operated. Opening of the Valve is by electrical signal to solenoid valve/loss of control pressure.

• Slug Control Valves:

Filter Separator control valve with Float pilot.

The valve is installed on Filter Separator along with complete Float Operated Control System to monitor and control the water level in the Separator. In the event, water level rises above certain level, the Slug Control Valve (Fueling Valve) will close automatically and Water Drain Valve will open allowing the Water to Drain.

Once the water level drops to safe level the Fueling Valve opens allowing the Fueling to start and Drain Valve closes. Entire system is foolproof for Aircraft Fueling.

Size: – 25 NB – 750 NB.
Pressure Class: – ANSI 150# & 300#.
Materials: – Carbon Steel, Alloy Steel, Stainless Steel etc.

• Pressure Reducing Valve:

Automatically reduces a higher inlet pressure to a constant lower outlet pressure. The valve consists of a main valve and (Fig. 55) pressure reducing control pilot. Slight changes in downstream pressure acts on topside of control diaphragm causing main Valve to counteract pressure changes and hold a constant outlet pressure.

The regulator will reduce the upstream pressure to a constant downstream pressure regardless of the change in flow rates/or inlet pressure. The pilot is a Normally Open valve that senses the downstream pressure.

Models: – DA 355 (Globe), DA 3550 (Angle).
Size: – 25 NB – 750 NB.
Spring Range: – Standard: 20-175 Psig, Optional: 5-35 Psig.
Materials: – Carbon Steel, Alloy Steel, Stainless Steel etc.

• Slow Acting Check Valve:

Non return function, closes automatically in case of reversal flow. The valve allows flow when inlet pressure is higher than outlet pressure. In case of reverse flow, the valve closes within appropriate time to ensure it does not generate any surge / water hammer. Ideal for Air craft fuelling application. Valve opens and closes at controlled (adjustable) speed to ensure smooth flow.

Models: – DA 3110
Size: – 25 NB – 750 NB.
Materials: – Carbon Steel, Alloy Steel, Stainless Steel etc.

• Solenoid On/Off Valve:

Operated by two way – three way solenoid pilot valve, a Solenoid Control Valve is an on-off control valve that either open or closes upon receiving an electrical signals to the solenoid pilot control, provides two position [ On-Off ] Operation. The main valve opens fully or closes drip tight depending upon the actuation position of the solenoid, energized to open/energized to close. The valve may be remotely operated by timers, relays, probes or any triggered device to the solenoid.

Models: – DA 9110
Size: – 25 NB – 750 NB.
Materials: – Carbon Steel, Alloy Steel, Stainless Steel etc.
Additional Features: – Electronic Flow control & metering system (Dual Solenoid).

• Pressure Relief Valve:

Auto Re-circulation on a Refueller to control the pumping pressure of Air Crafts. Solenoid Override or Pneumatic Override to safeguard the system. This can be operated remotely to re-circulate full flow. When installed in Main line, it prevents upstream pressure dropping below preset value. When installed on a By-Pass line, it controls main line pressure by relieving excess pressure in By-Pass/sump. Ideal for pump by pass to protect the downstream equipments. Relief pilot (F22) is normally closed due to spring tension. With increase in upstream pressure above set value, Pilot (F-22) opens which makes Main Valve to open fully.

Models: – DA 422 (Globe), DA 4220 (Angle).
Size: – 25 NB – 750 NB.
Spring Range: – Standard: 20-175 Psig, Optional: 5-35 Psig.
Materials: – Carbon Steel, Alloy Steel, Stainless Steel etc.

• Rate of Flow Control:

The rate of control, pilot operated valve maintain a constant flow rate adjustable, regardless of fluctuation in line pressure.
Function:- The pilot senses the differential pressure across the specially sized thin edge orifice plate mounted in the valve inlet flange. when the pressure differential is less than the set point, the main valve opens and allowing to maintain the desired flow. At the desired max. set point the pilot valve reacts to small changes in sensing pressure and controls the main valve position by modulating the pressure above the diaphragm.
When the pressure drop (across) the orifice exceeds the set point, the valve closes slightly, limiting the flow to pre-set minimum.
The orifice usually sized to generate a pressure differential of 3 to 5 psi at the desired max. flow. Adjusting the pilot setting permits the max. flow to be changed in the field above or below the original point.

Models: – DA 4550
Size: – 25 NB – 750 NB.
Materials: – Carbon Steel, Alloy Steel, Stainless Steel etc.

• Booster Pump control:

A Pilot (Solenoid) operated Booster pump control valve is designed for Installation on the discharge of Booster pump to control opening & closing on pump start up and shut down, eliminates pipe surges.

The pump starts against the close valve, when the pump is started, the solenoid control is energized and the valve begins to open slowly, gradually increase the line pressure to full opening head. when the pump is signaled to shut off the solenoid control is de-energized and the valve begins to close slowly, gradually reducing flow, while the pump continues to run.

A three-way solenoid valve controls the valve operations equipped with hydraulic check feature to close valve on pressure reversal and shut off pump in event of pump failure. Valve and pump operations are interlocked by limit switch assembly.

• Level Control:

The model DA 8110, Modulating float control valve to maintain constant liquid level in storage tanks and reservoirs by compensating for variations in supply or demand, keeping the tank full.

Models: – DA 8110
Size: – 25 NB – 750 NB.
Materials: – Carbon Steel, Alloy Steel, Stainless Steel etc.
Additional Features:- Non-Modulating Type Float Control Valve

• Altitude Control Valve:

Function: – One way Altitude valve controls the high water level in elevated Tanks or reservoirs. The altitude pilot senses the hydrostatic head of the reservoir to close on high water level. When the water level drops below the predetermined set point the valve opens to fill the reservoir. Supply pressure is greater than static head pressure. Tank discharge is by separate line.

Operation: – This is a hydraulically operated and pilot controlled valve which operates on the differential in forces between a spring load and the water level in the reservoir. The desired high water level is set by adjusting the spring force. The pilot control measures the head through a sensing line directly connected to the reservoir.

Models: – DA 6110
Size: – 25 NB – 750 NB.
Materials: – Carbon Steel, Alloy Steel, Stainless Steel etc.