VHT intake valves installed at the compressor inlet, which is control compressor capacity,. At start up the valves stay open a control signal is applied to close the valve and restrict the flow.
During the normal operation the valve opens and closed in response to a control signal to meet the downstream air derivation. At shut down, a build in check valve closed to prevent back flow through the compressor.

Characteristics

1. TFE valve seat for tight seal
2. strainght through design for low pressure drop
3. Viton cupseal for lubricant compatibility
4. side parts for pressure taps.
5. Sizes - 1.75”, 2.5 ”, 3”, 4” & 6”
6. Two pieces Housing
7. Silicon ‘O’ Ring.

Minimum Pressure Valve

Application:
VHT Engineering Minimum pressure valve maintain pressure required for the lubrication of oil-injected rotary compressor.

Operation:
Minimum pressure valve installed directly downstream from the air -oil separator this valve provide two function.

1. At start-up the valves stays closed up to a preset level and the opens to maintain a minimum pressure in the air -oil separator, This assure pressure for lubricating the compressor reduces oil foaming and the air -oil separator element.
2. At shut down the check valve closed to prevent back flow through the compressor.

Characteristics

1. Flow passage designed for low pressure drop.
2. Construction of the body - aluminum alloys - hardened condition.
3. TEF seats for tight seal
4. Viton Quard Ring
5. Inlet and outlet side ports for pressure taps.
6. Pressure setting & locking facility - variable range
7. Addition port at inlet side for sump pressure - female type
8. Outlet temperature reading port

Application
VHT positive control regulator are govern capacity control devices of compressors, speed control devices of engines, blow down valves and bypass valves.

Operation
The positive control regulators are modulate the intake valve and other system valves to control screw compressor output, installed to sense compressor output pressure.
This regulator control signal as compressor pressure increase

Design Features

1. Brass Forges Construction (Two Piece Construction)
2. Stainless steel valve seat ( lapped Metal seated)
3. Diaphragm Phosphor Bronze
4. Permissible Leakages -Zero Bubbles
5. Teflon Gasket

Application
VHT Butterfly valves for directive of flow in airing systems. The two point air Intake capacity control of air compressor.

Operation
Butterfly valve opening and closing operating at high differential pressures. And equipped with a closing stop screw for both easy reopening and for adjustment of minimum flow on start-up and idling of compressor.

Design Features

1	Valve Closing	impact right
2	Shaft Bearing	inside housing
3	Shaft Sealing	seal ring
4	Temperature range	-20 to +100°C
5	Materials	Cast Iron
6	Sizes	2”to 8”

Application
The Air operated solenoid valve a high flow filling or quick exhaust function media in air, oil and gas.

Function
Solenoid operated valve function to control the connected to pneumatic system by means of pendent control.

Technical specification:

1	Type	Piston type -spring loaded
2	Max. Operating pressure	25 kg/cm2
3	Test Pressure	35 Kg/cm2
4	Max. Temperature	110°C up to 500 HP.
5	Size	1.5”
6	Operating Voltage	220 Voltage
7	Exhausting Capacity	1500 cfm

Application
VHT Blowdown valves used to relief pressure from the separator of compressor , when it is switched off.

Operation
The blowdown valves provides two functions.

1. At start up the valve close to permit the are -oil separator pressure to build up.
2. At shut-down, when a pressure is applied the valve opens to bleed the air -oil separator to atmosphere. The blow down valve may be used as a by-pass valve to bleed air though the compressor at start-up.

Design Features

1. TEF seats for long seal life
2. Viton “O” rings for lubricant compatibility.
3. Sizes - 0.5” , 0.75” to 2” NPT & BSP

Application
VHT Oil stop valve is designed for rotary screw air compressor application.

Operation
The pilot port must be connected to compressor discharge upstream from the Minimum pressure valve and preferably to the wet side of the oil separator.
The inlet port must be connected to downstream side of a oil cooler, thermal valve, etc, to provide PSI pressure difference between the pilot and the inlet.

Technical specification:

1	Inlet port	1.5” NPT to 2” NPT
2	Outlet Port	1.5” NPT to 2” NPT
3	Maximum Temperature	200°C
4	Body	Aluminum material
5	Maximum pressure	160 PSI

Application
Safety valve is to protect the primary loop of pressurized water reactor against over - pressure . At a given set pressure the safety valves open and releases medium from pressurizer to the flash tank.

Operation
The Pressure relief valve control the pressure in a system, which can build up by a process upset, instrument or equipment failure or fire. The pressure is relieved by allowing the pressurized fluid to flow from an auxiliary passage out of the system.

Technical specification of{ 0.75” Safety valve}

1	Type	Spring Loaded
2	Seat Type	Soft Rubber
3	Type	Full Lift Enclosed spring Loaded
4	Accumulation	40%
5	Blowdown	10%

Silencer

Application
VHT Silencer used for screw compressor. It act as a noise controller for Blow down Systems.

Technical specification of Silencer

1	Working Pressure	35kg/cm2
2	Working Temperature	120°C
3	Exhaust Capacity	1300 cfm

Application
To control the temperature in hydraulic systems, units for power stations

1. Exploitation of oil and gas, construction of machines
2. automobile industry etc.

Technical specification:

1	Working Temperature	110°C
2	Working pressure range	7to 25kg/cm2
3	Mounting	Face Mounted
4	Test Pressure	50kg/cm2
5	Mounting Size	0.5” to 2”
6	Material	EN1A & Brass

Application

1. Rock Quarrying
2. Low Cost Automation
3. Spray painting
4. Air motor
5. Temperature Control System
6. Robotics
7. Film Processing
8. Cosmetic production

Advantage :

1. Low Cost and High Efficiency
2. Easy Serviceable
3. Inside & outside fully powder coating
4. Pulse operated water drain
5. Manual drain
6. Electrical automation