Severn 3000 Series Installation, Operation And Maintenance Instructions

Installation, Operation, and Maintenance Instructions for 3000 Series
TYPICAL UN-BALANCED VALVE – PARTS
Figure 1: Severn 3000 Series Cryogenic Control Valve
(Unbalanced) Cut section view.
Table 1:
Item No Description
01 Body
02 Bonnet
05 Plug
09 Metal Seat
10 Cage
12 Body Gasket**
13 Seat Gasket**
17 Stud
18 Nut
19 Washer
23 Stuffing Box Components*
24 Gland Flange
95 Cryo Extn Pipe
96 Spout End
Note -* Refer Figure 3
** Spare Components
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Cryogenic Top Entry Control Valves
INFORMATION
The purpose of this manual is to guide the process of
unpacking, installation and maintenance of Severn 3000
series
recommended that the users and personnel responsible
for maintenance. Read the manual before proceeding to
install, operate, or perform any procedures on the valve.
Ensure instructions as per the manual are followed to
avoid mishaps and injuries. For further information, the
User shall refer to 'BS6683' – Guide to installation and use
of valves.
GENERAL INSPECTION OF PARTS
Stuffing Box Components (ITEM 23) – Not re-useable,
STEM GAITERS - Examine for general condition and
renew if necessary.
MAINTENANCE ITEMS: Items 12,13 & 23 for both
balanced & Unbalanced valves.
ADVANCED INSPECTION – (to be carried out by trained
personnel only)
GASKETS (Body & Seat Gasket, Body & Bonnet Gasket)
- Not re-useable.
BALANCE SEAL - Not re-useable
PLUG / SEAT – If damaged contact Severn for advice on
repair or whether replacement is needed.
STEM GUIDES - Examine for general condition and
renew if necessary.
CAGE/CLAMP - Examine for general condition and
renew if necessary.
INTENDED USE
Reference is to be made to the Valve Specification / Data
Sheet, Installation and Operation Instructions, and
nameplate to check the product is suitable for the intended
use/application.
1
Cryogenic Control valves.
Version:3000-1.0/06/2024
It is highly