Application

It is used in hydraulic press sequence control, for blending and storage silos in cement industry, for bag filters, dust collectors, tyre tube curing press, pot header in rubber industry and for machine tool sequence.

Like plastics and other non-metals, ceramic balls are available in a host of compositions and formulations. This data sheet covers many of the general properties shared by ceramic balls, and lists specific characteristics of different materials.

General Characteristics:
As a rule, ceramic balls resist corrosion and abrasion extremely well. They also have low thermal conductivity, and a high resistance to heat. Ruby sapphire material can withstand extended exposure to temperatures in excess of 3250°F. These qualities make ceramic balls useful for flow control, metering, and bearing applications.

• Diameter : 1.3 - 1.5mm (Ave 1.4mm)
• Bulk Density : 0.60 - 0.66 kg/L (Ave 0.63 kg/L)
• Compressive Strength : 20N (Ave)

1. Catalyst for recovering sulfur in the petrochemical industry
2. Excellent defluorination agent for drinking water and for recycling alkyl-hydrocarbon in alkylbenzene production
3. Reclaiming agent for de-acidic in transformer oil, and de-arsenic agent in the acid industry
4. Adsorbent in the production of hydrogen peroxide solution
5. Catalyst for polyhydro-ammonia by substituting silica gel with ball-shaped product
6. Desiccator and purifying agent

The Pressure Reducing and Regulating Valve automatically reduces a high inlet pressure to a lower delivery pressure and maintains the lower pressure within acceptable limits.

Features and Benefits

• Automatically reduces a high inlet pressure to a lower delivery pressure: Maintains a lower pressure within reasonably close limits.
• Every valve is tested through a range of tests prior to shipping: Specify and install with confidence.
• High capacities for higher quality installations: Handles more volume with just one regulator.

Specification

A pressure reducing valve shall be installed to deliver water at a controlled pressure.
The valve shall be ASSE 1003 and IAPMO listed. The valve shall be a bronze body with a maximum inlet pressure of 300 psi. The valve shall be a yoke-type design with a buna seat disc and a stainless steel body seat.

Our range of diaphragm valves provide excellent sealing and isolation characteristics to contain fluid being controlled and prevent migration of the controlled fluid into the valve mechanisms or out of the valve. Diaphragm valves utilize a resilient diaphragm and a valve shoulder to engage a valve seat and prevent the flow of fluid past the valve seat.

It is needless to say that they could be used for handling air, water and  normal liquid/gas flow as well. It is the most ideal valve to handle  fluids that require high purity and  should remain free from contamination.

There are two main categories of diaphragm valves: one type seals over a "weir" (saddle) and the other (sometimes called a "straight-way" valve) seals over a seat. The main difference is that a saddle-type valve has its two ports in line with each other on the opposite sides of the valve, whereas the seat-type has the in/out ports located at a 90 degree angle from one another. The saddle type is the most common in process applications and the seat-type is more commonly used as a tank bottom valve but exists also as a process valve. While diaphragm valves usually come in two-port forms, they can also come with three ports and even more. When more than three ports are included, they generally require more than one diaphragm; however, special dual actuators can handle more ports with one membrane.

Change-over valves serving pneumatic conveying systems are subject to stringent requirements in terms of operational reliability and turdiness.

Mellcon change-over valves may be incorporated in various types of pneumatic conveying systems such as Fluxo pumps and screw pumps. These are systems used in the cement industry for conveying raw meal, cement, precipitator dust, coal meal and other pulverulent, non-sticky materials.

The change-over valve comes in two main types:
1. Symmetric
2. Asymmetric.
The asymmetric type is used where the conveying line branches off into a second line,while the symmetric type is mainly used in conveying systems incorporating Mellcon Fluxo pump type D-, connecting two outlet
pipes into one conveying line.

Body Materials

Carbon steel
Stainless steel
High chromium stainless steel
Hastelloy
Inconel, Pure nickel, Titanium

Mellcon Compressed Air and Gas Filters being manufactured are best Tested for simultaneous mechanical separation of liquid droplets and of solid dust from compressed gases. Tested with oil mist, these filters will have to be followed by adsorber units which have the double function of removing the remaining mist particles and of adsorbing the dissolved gases and vapours. Such "Adsorbers" contain granular adsorption media, usually activated carbon or silica gel. The granules nearer to depth filter and liquid mist particles, meanwhile the farther granules adsorb the dissolved vapours. Working pressure : 10 kg/cm2. Material : Carbon Steel. Finish : Inside black bituminious paint. Flanges according to ASA-150 RT Ceramic filter cylinders of grain size 120. All sizes are supplied with separately packed carbon except the In-Line Adsorber , which is supplied with filled-in carbon.

The rotameter is an industrial flowmeter used to measure the flowrate of liquids and gases. The rotameter consists of a tube and float. The float response to flowrate changes is linear, and a 10-to-1 flow range or turndown is standard.We at Mellcon maintain far greater flexability is possible through the use of correlation equations. The rotameter is popular because it has a linear scale, a relatively long measurement range, and low pressure drop. It is simple to install and maintain.

Principle of Operation of Rotameter

The rotameter's operation is based on the variable area principle: fluid flow raises a float in a tapered tube, increasing the area for passage of the fluid. The greater the flow, the higher the float is raised. The height of the float is directly proportional to the flowrate. With liquids, the float is raised by a combination of the buoyancy of the liquid and the velocity head of the fluid. With gases, buoyancy is negligible, and the float responds to the velocity head alone.
The float moves up or down in the tube in proportion to the fluid flowrate and the annular area between the float and the tube wall. The float reaches a stable position in the tube when the upward force exerted by the flowing fluid equals the downward gravitational force exerted by the weight of the float. A change in flowrate upsets this balance of forces. The float then moves up or down, changing the annular area until it again reaches a position where the forces are in equilibrium. To satisfy the force equation, the rotameter float assumes a distinct position for every constant flowrate. However, it is important to note that because the float position is gravity dependent, rotameters must be vertically oriented and mounted