Seat ring - Import export

We manufacture rough or fully machined seat and sealing ring for ball and butterfly valves in : • Austenitic stainless steel Alloys (CF8M, CF3M…) • Aluminium-Bronze (UNS C95500…) • Duplex and Super Duplex (CD4MCu, CD3MN…) • Nickel-based and high-alloys (CW-6MC, CU5MCuC, M-35-1 CW-12MW…) • Martensitic alloys (CA15, CA6NM…) • Other materials on request

We manufacture rough or fully machined seat ring and hub coupling in copper alloys or stainless steel

The welding division is M.E.G.A.'s new investment designed to meet the needs of a growing market. We manufacture spools and other special assemblies to meet customer requirements with certified welds guaranteed by our quality system. Cladding can be carried out on all machined products (inside/outside forgings, ring joint seats of flanges etc.).

For needs oI wator industry we produce txitterffy-like gaskets with dimensions from DN 80 to DN 500, rubber balls, seating rings tor PVC pcpes. sealing rings tor Mapikan L tubes, sealing rings for sewers sizes from DN 50 to DN 500. sealing rings for Corrugated pipes and others. The diversity of production and use of certain items —- require a variety of material to satisfy the required working conditions. After years of experience we have managed to adopt a series of high qualify materials that upon customers desire can satisfy the following requirements: resistance to atmospheric effect and ozone, resistance to low and high temperature, fire resistance, resistance to mechanical unpacts.resistance to liquid and gas permeability.

Application The Hunger RDS is designed to precision machine the seat ring bores in cylinder heads to produce smooth and closely fitting contact surfaces for oversize seat inserts. Features The RDS is equipped for counterboring as well as for facing the bottom of seat ring bores in a lathe-type action with a single point carbide cutter. The RDS is aligned in centerline with the valve guide by means of a pilot which is locked in the valve guide. An universal steady stabilizes the RDS against lateral displacement. Pilots and steady furnished with Hunger valve seat refacing tool also suit for the corresponding RDS tool. The built in feed gear mechanism for automatic longitudinal and cross feed of the single point cutter eliminates the need for multiple cutter sets and other accessories. An adjustable stop for the tool slide permits quick selection of the proper sized bore diameter.

The new portable HUNGER universal refacing machine UDM4E is a versatile machine offering a choice of modular components for refacing valves and valve seats as well as counterboring seat ring pockets and resurfacing the sealing surfaces on cylinder heads, cylinder liners and engine blocks of large diesel and gas engines. Key features: - No abrasive dust. A fast clean cut, - Compact and handy design - Modular add-on components provide a flexible solution for multiple projects - Powered by SELV (Safety Extra Low Voltage) to avoid risk of electrical shock - Power supply with universal AC input - Fast set-up time - Easy to use - The economical solution for both field and workshop use »Roundness, concentricity and surface finish of the refaced faces are within manufacturers’ specifications or even better«

Application With the PVM1 assembly set, worn valve guides can be quickly and easily removed from the cylinder head and new valve guides inserted into the cylinder head. The assembly set is particularly suitable for motorcycle, car and commercial vehicle workshops. Features The air hammer can also be used to drive valve seat inserts out of the cylinder head. For this purpose a Hunger valve seat turning device is used to turn a groove into the valve seat ring. The seat ring is driven out of the cylinder head by means of a clamping head whose expandable clamping elements engage in the groove. Handling Insert the appropriate drift pin into the pneumatic hammer and insert the drift pin into the valve guide. Switch on the compressed air supply with the control lever provided on the pistol grip of the air hammer. The valve guide is driven out of or into the cylinder head by the rapid impact sequence. A soft protective ring placed on the drift pin protects the valve guide from damage.

Main products: flanges liner, bearing housing, propulsion shaft liner, rudder stock liner, hub, hub coupling, hub cover, cap, seat ring, CPP or FPP blade, sealing system, POD components such as body, cover of body, cap, waterjet, thruster, stabilisator… Alloys: - bronze and brass - low allied and pure copper - aluminium bronze - aluminium - stainless steel - Ni-based and special alloys

The Hartmann Twin Ball Valve (TBV) provides a double line barrier and enables a significant increase of safety without much effort. Designed for applications with especially high safety requirements, the TBV consists of two integrated ball valves, which can be equipped with two independent barriers each. Thereby the safety can be raised by factor 4 compared to a standard valve. With the Double Isolation and Bleed function each ball valve seals both at the upstream and downstream side. With the so-called „studded“-design, meaning a closed flange form, the valve has the length of a single standard valve and affords a compact and economic alternative for the application of multiple valves. The TBV comprises – like all Hartmann valves – a pure metal-to-metal sealing system between ball and seat ring. With this sealing system leakage rates A, respectively 0, can be fulfilled. Furthermore, it is characterized by an outstanding longevity and low maintenance requirements.