Schrader Duncan Limited Ranjangaon, Pune, Maharashtra

Pneumatic valve stand is open panel very commonly used made out of MS channel welded on MS sheet or supporting structures to mount components like Ball valves, FRL, Pressure regulatr, direction control valve, non return valve, flow control valve & special components like flow indicator, pr. Gauges. Interconnecting tubing used are MS, SS or copper. This type of control panel gives easy access to operation & maintenance. Common applications are Steel rolling Mills, cement industry, Aluminum extrusion plants

The Schrader standard valve core is a tiny precision item, which in combination with the valve housing has been an ace of standardization for years. All Schrader valve cores, long & short, are interchangeable in all standard valve housing in use throughout the world. These cores are manufactured to precision standards to meet varied operating conditions involving a wide range of pressures, temperatures, gases, chemicals etc.

An important element of the Valve Automation is the Valve which could be Butterfly Valve, Ball Valve or Plug Valve. The Butterfly valve range is from size 25mm to 500mm and Pn rating 2.540. Ball valves are of 150 Class to 600 Class, in size 25mm to 200mm. The material of construction & Seal will be as per requirement, depending on the medium. Types of Ball Valves in the range are Typical two way, Screwed End, Socket Weld, Butt-weld etc. Three way ball valves for diverter application can also be offered. Butterfly valve varieties are Wafer type, Eccentric Design, with different seat material options. Based on specific application requirements. The system can be integrated with Positioner of Pneumatic Electro Pneumatic Smart type.

An important element of the Valve Automation is the Valve which could be Butterfly Valve, Ball Valve or Plug Valve. The Butterfly valve range is from size 25mm to 500mm and Pn rating 2.5/40. Ball valves are of 150 Class to 600 Class, in size 25mm to 200mm. The material of construction & Seal will be as per requirement, depending on the medium. Types of Ball Valves in the range are Typical two way, Screwed End, Socket Weld, Butt-weld etc.Three way ball valves for diverter application can also be offered. Butterfly valve varieties are Wafer type, Eccentric Design, with different seat material options. Based on specific application  requirements. The system can be integrated with Positioner of Pneumatic / Electro Pneumatic / Smart type.

Designed for application on conventional tyres with inner tubes. All Schrader passenger car valves have full length metal insert, rubber covered except at the threaded end where the valve cap is applied. TR 13 valve are normally applied on rims with 11.506 mm (0.453") hole diameter but can adapted with Schrader 996 plastic bushing for application on 15.900 mm (0.626") diameter rim hole normally using TR 15 valves.

RUBBER BASE CONVERTIBLE VALVES Dubltite convertible truck and bus valves are supplied in straight form but can be converted to single or double bent form by using Schrader 7260 truck valve converting tool.

For use on rear tyres of tractors specially designed for adding liquid ballast to tyres for increased traction. Both air as well as liquid is sealed in the tube. The core housing containing the valve core is removed as a complete unit, giving a larger opening for the passage of liquid.

Schrader now offers a complete range of cylinders from 32mm to 100mm bore dia, with radically different looks. These are tie rodless cylinders and they derive their sleek looks by virtue of using square aluminium tube. Complete range of mountings are available and they include Double trunnion mounting, Single trunnion mounting, Front plate mounting, Rear plate mounting, Leg mounting, Hinge mounting etc. Cylinders are also offered with reed switches, Rod eye end, Fork attachment etc. reed switches can be inserted at any position without dismantling the cylinder, and they sit flush with tube. Besides these Double ended cylinders, Single acting cylinders and custom built cylinders can be made as per users requirement.

Ruggedly built, these extensions meet wheel conditions where a light weight, rigid, yet hand-bendable-to-shape type is desired. They have a spring lined braided cover for protection, a sealing core at the extension mouth, and attach to the valves itself(after the core is removed) by means of a Swivel-Lock nut connection

For application on scooter and trolley wheels and small diameter wheels on wheel barrows. The valves are normally supplied in straight form but can be converted to single bent form by using Schrader 8876 and 3633A valve converting tool to ensure accurate trouble-free bending.

Fits into 5790 tractor valves and is provided with a core chamber to accept valve core internally. Whenever tractor tyre tube is to be filled with liquid, the core housing and core are removed as a single unit, thereby providing larger flow area.

Dubltite convertible truck and bus valves are supplied in straight form but can be converted to single or double bent form by using Schrader 7260 truck valve converting tool.

Valve automation is need of the process industry and Rotary Actuator is key element of valve automation. Schrader Duncan Limited launches �MaxFlow� range of Pneumatic Rotary Actuators. These actuators are available in spring return Single Acting as well as Double Acting models. Torque out put range is from 3 Nm To 4000 Nm for 0� to 90�, operating pressure range from 3 to 8 Bar. These are compact design actuators with standard mounting interface.

Sizes � 16 to � 63 Bore Equal forces on both end of Piston High cantilever and direct load can be taken on piston. Multi ported endcaps as standard High temperature seal s available as a standard option Many more option available

Like Hex Nut,Rim Nuts have standardized thread sizes.They hold fittings in positions,clampvalves to rim surface or wheel disc.

For applications where extensions can be mounted in a straight line with valve. Full length plunger pin actuates core in existing valve. Hex nuts are included on extensions 127.000 mm (5.000") and longer. Fits on 12.243 mm-26 (0.482"-26) valve mouth threads.

Airline Accessories are important element of any pneumatic circuit & package. Schrader has a wide range of Flow Control Valve (Inline & Banjo), Quick Exhaust Valve, Silencers, Silencer-cum-FCV, Blow Guns, Check-units, Non Return Valves etc. Without these no process can be complete.

Schrader push in fittings are made from Acetal resin moulded with nickel plated brass insert. It uses NBR (Nitrile) rubber "U" cup for creating leakproof joint with PU tube when it is inserted in to the push in fitting. The PU tube is locked inside the fitting by using S S lock claws with unique profile to prevent accidental release of PU tube. However the PU tube can be easily released when required, by pressing down on "release sleeve" with a finger and pulling the tube out without any tool. Schrader BSPT push in fittings are pre-coated with Teflon thread sealant while BSPP push in fittings are provided with face sealing "O" ring to create leak proof joint where push in fitting is fitted on.

Schrader 5/2 double poppet valves are unique range of  valves which are robust by design and are used in wide range of  applications for several decades. These poppet valves are designed to give long and trouble free service under the most arduous conditions. Poppet valves design is marked by high flow capacity, shorter switching distance giving it faster response time and self  cleaning properties. This is due to the fact that as the poppet shifts away from the face, the entire annular area between  the face and the poppet is available for air flow. The air flowing over the poppet seal carries  with it any dust or dirt particles, thus cleaning the seal. Hence poppet valves are suitable for use in dusty atmosphere and for high frequency operation. These poppet valves can be operated upto a cycle time of  500 cycles/min

Light weight and compact 32 poppet design.Plunger operated, roller operated and one way trip lever operated can be used as limit switch in machine tool application.Lock down lever operated and push button operated valves are useful for operating single acting actuators.

Gang Manifold - Exel Valves, G 18 - 52 Solenoid Operated Sub Base Exel Valves, G 18 - 14 - 52 Exel Solenoid Valve, G 18 - 32 Exel Solenoid Valve.

Schrader has a range of time tested Modular Spool Valve series in �" port size. These are sturdy in construction and have wide application. Available in 52 & 53 versions with solenoid, pilot and different manual actuations. Solenoid valves have external pilot as optional feature. Manual actuation includes hand lever, foot lever, push button, and mechanical actuation includes roller actuated valves. There is a choice of body porting & sub - base porting. The solenoid valves have a unique feature of manual override by a knob. The valves are also offered in the form of a gang manifold.

Pneumatic positioner is an useful interlinking device controlling cylinder valve movement in proportion to pneumatic signal ranging between 0.2 to 1 bar (3 to 15 psi) or split ranges. The salient features of Schrader Pneumatic Positioner are: