The effective sealing of the pump and the valve depends on the overall condition of the individual components. Particular care must be taken that the equipment requiring replacement of the packing has been effectively isolated on site and in the system prior to packing. The following is used to guide the maintenance staff, engineers and assemblers to properly install and adjust the packing. 1, the tools needed in the removal of the old packing root need to use a special tool, and with the fastener pre-gland nut. In addition, regular safety equipment and compliance with applicable safety regulations are required. Prior to installation, first familiarize yourself with the following equipment: Cutter to verify the packing ring, calibrate the torque wrench or wrench, helmet, internal and external calipers, fasteners lubricants, mirrors, pan picker, Tools, vernier caliper and so on. 2, cleaning and inspection. Slowly loosen the gland nut of the stuffing box to release any residual pressure in the packing assembly, remove any old packing and thoroughly clean the shaft / rod stuffing box; check shaft / rod for corrosion, dents, scratches Or excessive wear; Check other parts for burrs, cracks, wear, they will reduce the life of the packing; Check the packing box for excessive clearance and shaft / rod eccentricity; Replace larger defects of parts; : Check the old packing root as a basis for failure analysis to find out the reasons for the early failure of the packing. 3, measurement and recording. Record shaft / rod diameter, stuffing box aperture and depth, and at the time of sealing with water, record the distance from the bottom to the top of the stuffing box. 4, choose packing. Make sure that the chosen packing should meet the operating conditions required by the system and the equipment. Calculate the packing cross-sectional area and the number of packing rings required based on the measurement records. Check the packing to ensure it is defect-free. Before installation, ensure Equipment and packing clean. 5, packing ring preparation. Braided packing Winding the packing on a suitably dimensioned shaft or using a calibrated packing ring cutter; cutting the packing neatly into pairs (square) or miter (30-45 degrees) on request, cutting one at a time Ring, and with the shaft or stem to check the size is appropriate. Molded packing, to ensure that the ring size and shaft or stem with the precise fit, if necessary, according to the packing manufacturer's operating guidelines or requirements cutting ring. 6, installation packing. Carefully install a packing ring at a time, placing each ring around a shaft or stem. Before installing the next ring, make sure the ring is fully seated in the stuffing box and the next ring should be staggered, at least 90 degrees apart, the general requirements of 120 degrees. After the last ring is installed, tighten the nut by hand and press it down evenly. If there is a water seal, check that it is at the correct distance from the top of the stuffing box. At the same time to ensure that the shaft or stem can rotate freely. 7, adjust the packing. 1) Pump packing (1) Continue to hand tighten the gland nut; (2) After adjusting the gland nut after opening the pump, allow a little more leakage; (3) Slowly tighten the gland nut Leakage until the leak to an acceptable level; (4) If the leakage suddenly stopped, gland nuts should be re-screwed to readjust to prevent packing overheating; (5) to adjust the leakage rate to a steady state. 2) valve packing. Consult the packing manufacturer or your company's technical department for torque ratings or percentage compression. Tighten the gland nuts as follows. (1) Apply torque to gland nuts to 30% of full torque or percentage of party compression; (2) Repeatedly open and close the valve several times and apply full torque when the valve is in the closed position; (3) Repeat step ) 3 or 4 times. 8, fastening and replacement again. After a few hours of operation, check the adjustment of the gland and tighten if necessary. When the gland can not be further adjusted, the packing must be replaced.
Bollard Lights
LEDER technology`s bollard light is the perfect landscape lighting solution for both commercial and residential properties. This bollard light allows users to place it just about anywhere and is ideal for illuminating front and back yards, pathways, parking lots and decks.
This bollard solar light is constructed of stainless steel, polished pencil edge glass and incorporates our cutting-edge GS solar LED light bulb technology and provides 360-degree illumination. At dusk, the solar walkway light provides a brightness of 100 lumens in warm white color temperature for up to 12 hours on a full charge. Just place this solar light in a spot with ample direct sunshine and let the sun do the rest.This sleek and modern bollard light is made of cement and boasts a sophisticated gray speckled finish that will give your home that look you've been missing. The solar bollard light is light underneath the circular curved top and will illuminate your outdoor spaces.
Features:
• New Solar Technology
• Fashionable and modern design
• Outdoor Lighting
• Energy saving save electricity
• Contracted design
• Color temperature :3000k-6000K
• Body color can be customized as RAL Code
• Type of protection: IP20 /IP65 (Some models)
• Warranty:3 - 5 years
Our minimalist bollard light illuminates your outdoor areas with style.The bollard light will brighten your garden and shrubbery to look very attractive at night, as well as, light up walkways, pathways, or driveways, making them safer and more beautiful.
We have rich production experience in lighting .Except LED Bollard Light, we also offered other product in outdoor lighting ,such as LED Flood Light , LED street Light , LED Inground Light, LED Spike Light ,LED Wall Washer,Outdoor Wall Light & Step Light as so on .
Bollard Lights,LED Bollard,Solar Bollard Light,Outdoor Bollard Lights
JIANGMEN LEDERLIGHT LIGHTING Co.,LTD , https://www.wallwasherlights.com