Gate valve packing leaked eight cases

Gate valve packing leakage of eight cases 1. Improper operation, excessive force, etc .; 2. Packing ring is insufficient, the gland is not compressed; 3. Filler over the service life, aging, loss of flexibility; 4. Valve stem accuracy is not high , There are bending, corrosion, wear and other defects; 5 packing is not installed, there is a small generation, there are poor spiral wound joints, tighten the loose and other defects; Glands, bolts, and other parts damaged, Compression; 7. Fillers are not right, intolerant medium corrosion, impatience valve high pressure or vacuum, high temperature or low temperature use; 8. Gland skew, gland and the gap between the valve stem is too small or too large, Worn, packing damaged.

Door Frame Roll Forming Machine

Door Frame Roll Forming Machine, Steel Door Frame Machine, Steel Door Frame Forming Machine, Door Frame Making Machine

Parameter:
1.Suitable to process:Colored Steel plate, galvanized board
2.Width of the plate: depends to drawing
3.Roller stations: depends to drawing
4.Rolling material: Forging Steel 45#
5.Rolling galvanization thickness:0.05 mm
6.Material of the cutting blade :Cr12
7.Hydraulic oil :40#
8.Dimensions: depends to drawing

9.Motor:4+4kw
10.Thickness of the plate:0.3-0.6mm
11.Productivity:8-10m/min
12.Diameter of the roller:70mm
13.Weight:About 3 T
14.Voltage:380V 50Hz
15.Processing precision : within 1.00mm
16.Transportation:one complete machine need one 40feet container to hold

17.Payment term:30%deposit,and balance before delivery

Door Frame Roll Forming Machine, Door Frame Making Machine, Door Frame Machine, Steel Door Frame Machine, Door Frame Forming Machine

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