Installation and Maintenance instructions

Installation and Maintenance instructions

T68 Shut-Off Valve
Installation & Maintenance Instructions
Option selector
T68˙–˙˙˙–B2˙
Port
63/4“
81“
A1-1/4“
Valve Type
B1-1/2“
A 2-Port/2-Position. No exhaust. Black handle locks open or closed. N No yoke
1
C 3-Port/2-Position. Unthreaded exhaust. Black handle locks open or closed.
E 3-Port/2-Position. Unthreaded exhaust. Yellow handle locks in closed
position only
H 3-Port/2-Position. Threaded exhaust. Black handle locks open or closed.
Options
NNone
S Silencer installed in T68H exhaust port
2
Thread
APTF
B ISO Rc taper
G ISO G parallel
3
Porting
A Threaded inlet and outlet for inline mounting
B Threaded inlet. Attaches to inlet end of yoke.
C Threaded outlet. Attaches to outlet end of yoke.
Technical features
Technical Data
Fluid: Compressed air
Maximum pressure: 17 bar (250 psig)
Operating temperature*: -20° to +80°C
(0° to +175°F)
* Air supply must be dry enough to avoid ice
formation at temperatures below +2°C (+35°F).
Cv factor:
In to Out ports: 27,5
Out to Exhaust ports: 0,16
Exhaust port threads on T68H model: G 1/4
Materials:
Body: Aluminium
Handle: Zinc
Elastomers: NBR
Ball: Brass
Replacement Items
Service kit
(items circled on exploded view) 4384-310
Installation
Yoke Mounted Valves
1. Lubricate o-ring (3) with a light coat of o-ring grease, then place o-ring in groove in yoke.
2. Attach valve to yoke using screws (1) and nuts (2). Attach to T68 to inlet end of yoke (T68 models with B in 7th position of model number) or to outlet end of yoke (T68 models with C in 7th position of model number). Arrows on yoke and on T68 label must point in same direction.
3.Connect piping to T68 port using pipe thread sealant on male threads only.
Inline Mounted Valves
Install valve in air line with air flow in direction
of arrow on label. Use pipe thread sealant on
male threads only. Do not allow sealant to enter
interior of valve.
Padlock Installation
The yellow handle on T68E valves can be locked
in the closed position only. The black handle on
T68A, T68C, and T68H valves can be locked in
the open or closed positions. If desired, install a
customer supplied padlock in the 9mm (0.35”)
diameter hole in the locking ring (10).
Yoke mounted valves
2
1
3
10
In-line mounted valves
11
12
13
14
7
Disassembly
1.Shut off inlet pressure. Reduce pressure in inlet and outlet lines to zero.
2.Remove the valve from the air line.
Disassemble in general accordance with the item numbers on exploded view.
Cleaning
1.Clean all parts with warm water and soap.
2.Dry and inspect parts. Replace parts found to be damaged.
Assembly
1.Lubricate o-rings and seats (7) with a light coat of good quality o-ring grease.
2.Assemble the unit as shown on the explod
ed view. Ball (8) on exhausting type valves (T68C, T68E, T68H) must be assembled so the drilled hole can be seen in the outlet when the handle is in the closed position.
WARNING
These products are intended for use in industrial
compressed air systems only. Do not use these
products where pressures and temperatures can
exceed those listed under Technical Data.
Before using these products with fluids other
than air, for non industrial applications, or for
life-support systems consult Norgren.
Use in potentially explosive atmospheres
Code of device according EC
directive 94/9/EC ExII 2 GD c TX
• Only non-flammable gasese to be used as a
medium.
• Surface temperature dependant on process
fluid temperature and ambient temperature must be below the ignition temperature of the
flammable gas or dust.
• Earth unit and/or pipework to avoid
electrostatic discharge.
• Precautions should be taken to prevent hazard
from adiabatic compression.
• Use wet cloth for cleaning.
• Protect the unit from object falling onto it.
• Avoid contact with corrosive environment.
• For servicing the unit it is recommended to
carry out this work outside of the danger zone.
• For details of ignition hazard assessment
contact Norgren.
4
8
7
15
6
6
9
17
16
1
4
5
2
3
20
19
18
20
19
21
23
22
Our policy is one of continued research and development. We therefore reserve the right to amend,
7/15
I&M/en 8.260.600.01
without notice, the specifications given in this document. (1999 - I&M8096c) © 2015 IMI International s.r.o.