Roloc Disc Holder
High
Flexible durability, This Roloc disc back holder is made of reinforced rubber
material, longer life time than other products.Widely used with various types
of discs, Mini flap discs, quick change discs, Surface Conditioning Discs,
strip discs and Roloc bristle discs etc.The
1/4 shank fits drills, air powered die grinders, and other Power Tools and air
tools.Max speed of 30000RPM, full range size of 1in 1.5inch 2in 3inch are
available.
We distributes and wholesales various brands of Bonded Abrasives , Abrasive Sanding Disc, Cutting Wheels , Flap Wheels , Flap Disc Backing Pad, Flap Disc Adhesive , and Surface Conditioning Product etc, and enjoy a high position among consumers.
Features:1"
2" and 3" roloc disc pad holder heavy duty very durable rubber pad
with 1/4" shaft.Heavy duty rubber pad, aluminum core with nickel plated
removable steel shank. Accepts sanding, polishing, surface
conditioning/preparation, bristle and other disc consumables, The tool can also be used as a polishing disc holder to polish
jewelry or cars.
Roloc Disc Holder,2inch roloc disc holder,Roloc Bristle Disc Holder,Sanding Disc Pad Holder,Die Grinder Roloc Adapter Zhengzhou Jiading Abrasive Manufacturing Co.,Ltd , https://www.abrasive-jd.com
1, gate valve: gate valve is closed (gate) along the vertical axis of the channel to move the valve, mainly in the pipeline as a cut-off media, that is, fully open or fully closed use. In general, the gate valve can not be used as regulating flow. It can be applied to low temperature pressure can also be applied to high temperature and pressure, and according to the valve of different materials. However, the gate valve is generally not used for transporting medium such as mud in the pipeline. Advantages: ①small fluid resistance; ② Kai, closing the required torque is small; ③ can be used in the medium flow in both directions of the ring network pipeline, which means that the flow of media is not restricted; ④ fully open, the sealing surface by the work Medium erosion than the globe valve is small; ⑤ body structure is relatively simple, manufacturing technology is better; ⑥ shorter length of the structure. Disadvantages: ①large size and opening height, the installation space is also larger; ② in the opening and closing process, the sealing surface of the relative friction, wear larger, even at high temperatures tend to cause scratches; ③ Gate valve has two general sealing surface, giving processing, grinding and maintenance increased some difficulties; ④ open and close a long time. 2, butterfly valve: butterfly valve is a circular opening and closing pieces reciprocating about 90 ° to open, close and regulate the fluid channel of a valve. Advantages: ①simple structure, small size, light weight, consumables province, do not use in large-caliber valves; ② quick opening and closing, flow resistance is small; ③ can be used for medium with suspended solids, according to the strength of the sealing surface can also be used Powdered and granular media. It can be used for bidirectional opening and closing and adjustment of ventilation and dust removal pipeline. It is widely used in gas pipeline and waterway of metallurgy, light industry, electricity and petrochemical industry. Disadvantages: ①flow adjustment range is not large, when the open up to 30%, the flow will be more than 95%. ② Due to the structure of the butterfly valve and the sealing material, it is not suitable for high temperature and high pressure piping system. General operating temperature below 300 ℃, PN40 below. ③ sealing performance relative to the ball valve, globe valve is poor, it is used for sealing the place is not very high. 3, cut-off valve: refers to the closing piece (valve) along the valve seat center line of the valve. Depending on the type of movement of the valve disc, the change in valve seat opening is in direct proportion to the valve disc stroke. Due to the valve stem of this type of valve opening or closing stroke is relatively short, but also has a very reliable cut-off function, but also because the valve seat opening changes in proportion with the valve stroke is proportional to the flow rate is very suitable for regulation. Therefore, this type of valve is very moving together as cut off or adjust and throttle. Advantages: ①in the process of opening and closing, due to the friction between valve disc and valve sealing surface is smaller than the gate valve, which wear. ② opening height is generally only 1/4 of the valve seat passage, so much smaller than the gate valve; ③ usually there is only one sealing surface on the valve body and valve disc, so manufacturing technology is better, easy maintenance. ④ Because of its filler is generally a mixture of asbestos and graphite, so the higher temperature grade. General steam valve with stop valve. Disadvantages: ①due to the flow of medium through the valve has changed, so the minimum flow resistance of the globe valve is also higher than most other types of valves; ② due to longer stroke, the opening speed slower than the ball valve. 4, check valve: Check valve for piping system, according to the valve before the valve pressure difference and automatically open the role of the liquid is automatically controlled the direction of flow, so that it flows in one direction to prevent the reverse flow. Used for water supply pipes, installation has strict direction, must not be equipped with anti. Its main role is to prevent media backflow, to prevent the pump and drive motor reversal, as well as the release of container media. Check valves can also be used on lines where the pressure may rise above the system pressure on the auxiliary system. The main can be divided into swing-type (according to the center of gravity rotation) and the lift (along the axis of movement).