Model G

The following Valve Lapping Equipment is available for Rental:

LarsLap Model G-B Valve Grinder
Model G-B grinds/laps Gate and Gate Valve Wedges, Globe valves, Check valves and Safety valves with flat seats. Diameter capabilities of grinding 6”- 24”.

LarsLap Mechanically Driven Technology :
The patented LarsLap grinding equipment is a mechanically driven system with all grinding wheels moving at the same rate of speed producing a perfect crosshatch pattern as the inside and outside of the seat is ground at the same time. Each grinding wheel is o-ring driven resulting in a process that is approximately five (5) times faster than traditional methods available today. The driving plate pivots instead of the grinding wheels, which places the pressure in the middle of the driving plate. This results in a perfectly flat seat – without undesirable effects such as concave or convex seats. These results can also be seen when grinding a valve seat that has become concave or convex due to improper grinding. With the mechanically driven technology the damaged seats can be ground to become flat. The direction of the motor on the LarsLap equipment can be easily reversed (compressed air reversible motor drive).


Versatility:
Model G-B of the LarsLap valve grinding equipment is provided for use on gate valves, globe valves, check valves, safety valves and control Valves with flat seats.

Mounting Technology:
The mounting plate mounts onto the valve’s flange with a 3-point assembly that acts as a quick grip vice. This mounting device completely eliminates the use of C-clamps.
The LarsLap valve lapping tool may be set up prior to entering the valve with only fine adjustments necessary once the machine is set up in the valve. As the equipment is mechanically driven, it is unnecessary to have the grinding wheels centered perfectly. The LarsLap wheels need only to cover the seat in order to work correctly. The machine is quickly and easily mounted. The mounting frame does not need to be removed and reset when changing grinding paper on the grinding heads or grinding opposite side of seat. Mounting is versatile – the equipment can be mounted in any direction.

Model FL

LarsLap Model FL Valve Grinder
Model FL-BC grinds/laps gate, globe, check and safety valves with flat seats. Diameter capabilities of grinding 2.5”-8” valve seats. Request pricing for FL-AC for angle seats.

LarsLap Mechanically Driven Technology :
The patented LarsLap equipment is a mechanically driven system with all grinding wheels moving at the same rate of speed producing a perfect crosshatch pattern as the inside and outside of the seat is ground at the same time. Each grinding wheel is O-ring driven resulting in a process that is approximately five (5) times faster than traditional methods available today. The driving plate pivots instead of the grinding wheels, which places the pressure in the middle of the driving plate. This results in a perfectly flat seat – without undesirable effects such as concave or convex seats. These results can also be seen when grinding a seat that has become concave or convex due to improper grinding. With the mechanically driven technology the damaged seats can be ground to become flat. The direction of the motor on the LarsLap equipment can be easily reversed (compressed air reversible motor drive).

Versatility:
Model FL-BC is provided for use on Gate and Gate Valve Wedges, Globe, Check, Safety and Control Valves with flat seats. The Model FL-AC is available for use on Gate, Globe, Check, Safety and Control Valves with flat seats and Globe valves with angle seats, 15-30-45 degree angle segments. Diameter capabilities of grinding 2.5” - 8”. One does not require an additional machine or accessory to work on each individual valve type.

Mounting Technology:
The mounting technology is the same for the Model FL as for the Model G and S. The mounting plate mounts onto the valve’s flange with a 3-point assembly that acts as a quick grip vice. This mounting device completely eliminates the use of C-clamps.
The LarsLap equipment may be set up prior to entering the valve with only fine adjustments necessary once the machine is set up in the valve. As the equipment is mechanically driven, it is unnecessary to have the grinding wheels centered perfectly. The LarsLap wheels need only to cover the seat in order to work correctly. The machine is quickly and easily mounted. The mounting frame does not need to be removed and reset when changing grinding paper on the grinding heads or grinding opposite side of seat. Mounting is versatile – the equipment can be mounted in any direction.

Model K

LarsLap Model K-AB ELACC Valve Grinding Tool

Features:
Grinds/laps globe valves, control valves, and safety relief valves with flat seats 1/2" - 4", and angle seats 1/2" - 2.5". Pneumatic and electric motors are capable of various grinding speeds for close control of the finished surface. Self-adhesive grinding paper is used for fast attachment to the grinding heads.

Versatility:
The standard Model K valve lapping tool grinds globe valves, control valves and Safety Relief valves with flat seats and angle seats. Both electric and pneumatic driven technology is available as standard.

Mounting Technology:
The LarsLap Model K valve grinder utilizes a conical cone that self centers onto the top of the valve’s flange. Three (3), angle segments 15-30-45 degree, are included which cover the standard valve sizes for globe valves. A guide fits into the bore below the valve seat in order to pilot the grinding of the valve seat. The guide assists as a fastening device for the adhesive grinding paper.

Model SC

LarsLap Model S-C Valve Grinder
LarsLap Model S-C grinds/laps gate valves, gate valve wedges, and check valves with flat seats. Diameter capabilities 1”-4” valves.

Features:
The Model S-C’s grinding heads are reversible for 3 degree outside relief grinding. The grinding heads are sized for all standard gate and check valves from 1”-4”.

Versatility:
The S-C valve grinder is utilized for the smaller valve sizes - Gate & Check Valves and Gate Valve Wedges– no adapters necessary. LarsLap Model S-C grinder is maneuverable as it is capable of moving vertical and horizontal controlled from the top the valve.

Mounting Technology:
The mounting technology is the same for the Model S-C as for the Model G and FL valve grinders.

Specify valve seat material and expected condition or desired abrasive material and grit at time of rental.

Request a Quote for Rental