EFCO-GRINDING AND LAPPING

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Portable valve grinding and lapping machines for flat seats (Valva)

Portable machines for grinding and lapping of sealing faces in valves, valve disks, flanges etc. An impressive concept of simple operation, wear-resistant tools, good price/performance ratio, high profitability and efficiency.

Valve grinding machine VALVA-1 mounted on valve

Work range: Power supply:

DN 8 – 1600 mm (¼“– 64“) electric 230 / 110 V, 50/60 Hz or pneumatic 6-7 bar

Portable valve grinding and lapping machines for conical seats (VSK)

Portable machines with special tools for the grinding of conical sealing faces in high-pressure, shut-off and control valves. Fast and simple centring of the tools guarantees effective and high quality repair results.

VSK grinding tool and 3-jaw-clamping chuck mounted on valve

Work range: Seating angle: Power supply:

DN 8 – 300 mm ( ¼“ – 12“) 30°, 40°, 60°, 75°, 90° (other seating angles on request) electric 230 / 110 V, 50/60 Hz or pneumatic 6-7 ba

Special tools for the grinding of pipe ends with metallic 140° lenticular gaskets (LS)

Portable machines with special tools for the grinding of pipe ends with metallic 140° lenticular gaskets (to BASF and DIN 2696). Fast and simple centring of the tools guarantees effective and high quality repair results.

VSK for pipe ends with lenticular gaskets

Work range: Seating angle: Power supply:

DN 8 – 200 mm ( ¼“ – 8“) 140° electric 230 / 110 V, 50/60 Hz or pneumatic 6-7 bar

Portable valve grinding machines (SL / SLA / HSL)

Gate valve grinding machine SL-05 mounted on valve via clamping chain Planet wheel with driven grinding spindles AS-3 Gate valve grinding machine SL-2 mounted on valve

Portable machines for grinding and lapping of sealing faces in gate valves and non-return valves, gates and flanges. Optionally, these machines can be fitted with a digital rocker for contact pressure. This patented unit guarantees reproducibility and absolutely flat sealing faces. In addition, our valve grinding machines can be fitted with a swing-check adapter to enable machining of sealing faces on non-return valves with a large inclination. Hard seats can be machined with our portable high-speed valve grinding machine with driven spindles. This makes extremely fast and effective machining possible. This option can be retrofitted (SLA) on existing machines or can be supplied as a complete system. Fast setup and removal of the machines is guaranteed by means of a specially developed clamping block.

Work range:  Power supply:

DN 10 – 2000 mm (3/8“ – 80“) electric 230 / 110 V, 50/60 Hz or pneumatic 6-7 bar

Portable high-speed valve grinding machine (HSS)
High-speed gate valve grinding machine HSS-1A mounted on valve

Portable high-speed valve grinding machine in custom design for general overhaul of sealing faces in fitted gate valves. In addition, an angle correction can be carried out via the integral digital display. This machine is designed in particular for the grinding of old sealing faces, face grinding of new sealing faces and grinding of defined radii and chamfers.

Work range:  Power supply:

DN 80 – 600 mm (3 ¼“ – 24“) pneumatic 6-7 bar

Grinding and lapping machines for safety valves (TSV)
Grinding machine with excenter for machining safety valve seats

The EFCO TSV is a portable grinding and lapping machine with excenter for the machining of sealing faces of safety valves. The machine has two separate drives. This results in a cross-ground and absolutely flat sealing face. 

Work range: Power supply:

DN 15 – 300 mm (1/2“ – 12“) electric 230 / 110 V, 50/60 Hz or pneumatic 6-7 bar

Brochure TSV

Portable high-speed grinding machine for flat and conical valve seats (VSA)
High-speed valve grinding machine VSA-1 mounted on valve

High-speed grinding machine for machining flat and conical sealing faces in valves and on flanges. Particularly suitable for precise grinding of heavily damaged faces, cylindrical holes and conical sealing faces, in particular after build-up welding.

Work range: Power supply:

DN 20 – 1500  mm (3/4“ – 60“)  pneumatic 6-7 bar

Stationary grinding machines for valve and machine components (KS)
Grinding bench KS-6

These stationary grinding machines can be used on site or in the workshop. They are suitable for face grinding gates, valve seats and other machine components. The aluminium grinding plate is fitted with self-adhesive abrasive disks. A fixed stop provides improved guiding of the workpiece.

Work range: Power supplay:

Table diameter  600 mm (24“) electric 230 V, 50/60 Hz

Stationary surface lapping machine for face seals, valve seats, gates etc. (FLM)
Stationary surface lapping machine FLM-1500

EFCO surface lapping machines are excellent for lapping individual or series components. Worn components, such as valve seats, mechanical shaft seals, disks, etc., can be re-lapped in repair workshops and at refurbishment companies. Automatic and finely adjustable lapping compound feed as well as freely adjustable lapping table speed guarantee high quality lapping results.

Work range: Power supplay:

Workpiece diameter  20 – 600 mm (3/4“– 24“) electric 230/110 V 400V, 50/60 Hz

Stationary grinding and lapping machines for valves, safety valves, gate valves, non-return valves and gates (SM)
Stationary grinding and lapping machine SM-450

Stationary grinding and lapping machines for the repair of sealing faces in valves and gates. These machines are characterised in particular by their stable and robust design, compact machine concept, very high table load and modular concept. A second table can be retrofitted at any time. Driven planetary gears to increase removal can also be retrofitted.

Work range: Power supplay:

DN 8 – 500 mm (¼“– 20“) electric 230/110 V 400V, 50/60 Hz

EFCO ROTAGO – The Ball Valve Lapping Machine

Stationary ball valve lapping machine for the simultaneous finishing of the ball and 2 metallic sealing rings. For small and medium-sized ball workpieces with diameters of up to 300 mm. EFCO ROTAGO

The EFCO ROTAGO is the best solution for lapping together metallic ball valve sealing seats and ball. It is suitable for a great variety of sealing seats and balls, i. e. floating ball, carried ball, etc., where surface shape and quality is of particular importance.

Main features of this machine are:

  • Simultaneous lapping of all sealing parts
  • Huge time savings compared to the manual lapping process
  • Ensure an exact fit of ball and sealing seats
  • Control speed of each drive continuously and independently
  • Integrated metering device for steady distribution of lapping mixture
  • Loading of large lapping workpieces from above
  • Adjustable stroke of sealing seat movement
  • Continuously adjustable pressure control to regulate contact between valve seats and ball
  • Drip container for used lapping mixture
  • Door equipped with protection switch
  • Timer with automatic shutoff
  • Ergonomically adjustable control panel
Ball diameters: Ø 50 mm – Ø 300 mm (2" – 11.8")
Maximum ball weight: ca. 100 kg
Speed of main spindle (ball): 3 – 60 U/min
Speed of secondary spindle (valve seats): 3 – 80 U/min
Speed of pendulum mechanism: 3 – 30 U/min
(Eccentric) travel of the pendulum: 0 mm – 60 mm (0 – 2.4")
Accessories
MK adapters / ENT inclined tables
Inclined table ENT-1 and Morse Cone adapter MK-3

Adapter and inclined tables make it possible to use EFCO grinding and lapping tools, for example on pillar drilling machines, to machine sealing faces and flanges on and in valves.

Work range: DN 8-2000 mm
Valve Cleaning Set (ARS)
Valve cleaning set ARS

Developed for the removal of rust, scale, slag, seal ressidue and dirt on valves and housings using high-speed rotating twisted brushes.

Power supply: electric 230V/120V, 50/60Hz or pneumatic 6-7 bar 

Telescope mirror inspection set (TSM-1)
Telescope mirror inspection set TSM-1 in carrying case Mirror set with magnetic lifter and integral light source to inspect points wich are dark and difficult to access.
Inclinometer
Inclinometer in carrying case Inclinometer for sealing faces in valve housings.
Grinding and Lapping Compound Overview

Grinding and lapping compounds (abrasives)

EFCO grinding and lapping compounds have been matched to the FCO technology after extensive testing. We supply various grain sizes and formulations optimised for the application.