Packing Installation Instructions: Valve Stem Gland Packing (1)
Remove all of the old compression valve packing from the stuffing box. Clean box and stem thoroughly and examine stem for wear and scoring. Replace stem if wear is excessive. Recommended surface finishes are 32 (micro inches) AARH on the stem, and 125 (micro inches) AARH maximum on the box bore.
As for valve, we’d like to recommend the following Braided Mechanical Packing products:
ü High Carbon Compression Sealing Packing
ü Graphite Braided Rope Packing
ü Pure PTFE Sealing Packing / Teflon Pump Packing
ü GFO Mechanical Packing / Graphite PTFE Braided Packing
Tenglong Sealing, profession manufacturer of Gland Packing since 1979, and our annual output up to 2000 tons/year.