Azbil AGVB - Chapter 9. ISO 15848-1 Certified Low-Emission Gland Packing System; 9-1. Overview

Chapter 9. ISO 15848-1 Certified Low-Emission Gland
Packing System
9-1. Overview
Azbil’s low-emission gland packing system employs a live-loaded packing system to maintain
valve seal performance for a long period of time. The gland packing system has acquired
third-party certification for compliance with ISO 15848-1, which is the international standard
for low-emission performance of valves.
For the structure of the gland, see
Figure 9-1 and Figure 9-2.
No. Name
(1)
(6)
(5)
(4)
(3)
(7)
(11)
(12)
(13)
(9)
(8)
(10)
(2)
(1) Gland stud bolt
(2) Gland nut
(3) Packing flange
(4) Belleville spring
(5) Packing follower
(6) Carbon ring (P6210C2FS)
(7) Adapter packing (P6720)
(8) Main packing (P4519)
(9) Spacer
10 Stem
(11) O-ring for inner side of packing fol-
lower (optional)
(12) O-ring for outer side of the packing
follower (optional)
(13) Stuffing box
Figure 9-1. Structure of Azbil’s low-emission gland packing system (PTFE yarn)
No. Name
(1)
(2)
(10)
(11)
(12)
(13)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(1) Gland stud bolt
(2) Gland nut
(3) Packing flange
(4) Belleville spring
(5) Packing follower
(6) Carbon ring (P6210)
(7) Adapter packing (P6720)
(8) Main packing (P6617CL)
(9) Spacer
(10) Stem
(11) O-ring for inner side of packing fol-
lower (optional)
(12) O-ring for outer side of the packing
follower (optional)
(13) Stuffing box
Figure 9-2. Structure of Azbil’s low-emission gland packing system (expanded graphite)
9-1