WARNING: Installation, disas-
sembly, repair and maintenance
MUST be performed only by quali-
fied personnel. All gas MUST be
evacuated from the system before starting repairs.
Installation, usage and maintenance of this product must be in compli
-
ance with all RegO
®
instructions as well as requirements and provisions
of NFPA #54, NFPA #58, DOT, ANSI, all applicable federal, state, provincial
and local standards, codes, regulations and laws.
Inspection and maintenance on a periodic basis is essential.
Be sure all instructions are read and understood before installation, opera-
tion and maintenance. These instructions must be passed along to the
end user of the product.
RegO Rail Tank Car equipment is AAR approved. If repaired, the continued
validity of the AAR approval is contingent upon proper inspection to de
-
termine what needs to be repaired; proper repair using RegO OEM parts
and procedures, proper testing for leakage and performance following
repairs and installation.
ECI EXPRESSLY DISCLAIMS ANY AND ALL LIABILITY – UNDER ANY
THEORY, WHETHER CONTRACT, WARRANTY, TORT OR OTHERWISE – RE
-
LATING IN ANY MANNER TO ANY RAIL TANK CAR EQUIPMENT REPAIRED
USING ANY PRODUCTS NOT MANUFACTURED BY ECI.
USE OF ANY PRODUCTS NOT MANUFACTURED BY ECI TO REPAIR ANY
RAIL TANK CAR EQUIPMENT WILL INVALIDATE ANY AND ALL WAR
-
RANTIES OF THE RAIL TANK CAR EQUIPMENT, WHETHER EXPRESS
OR IMPLIED.
CAUTION: Contact or inhalation of liquid propane, ammonia and their va
-
pors can cause serious injury or death! NH
3
and LP-Gas must be released
outdoors in air currents that will insure dispersion to prevent exposure to
people and livestock. LP-Gas must be kept far enough from any open flame
or other source of ignition to prevent fire or explosion! LP-Gas is heavier
than air and may not disperse or evaporate rapidly if released in still air.
TA7894-50 Rebuild Kit For
TA7894P Tank Car Valves
Seal Housing
Wiper O-Ring*
Pressure Seal Rings (2)*
Jam Ring*
Washer*
Seal Housing Gasket*
Spring*
Cap Screw (4)
Bonnet**
Body Gasket*
Seat Disc Retainer
Seat Disc*
Seat Disc Retainer Nut*
Stem Holder
Stem**
Stem Retainer (2)
Body
Figure 1-TA7894P
Figure 2-
Seal Housing Assembly
* All components included in the TA7894-50 kit are recommended for valve rebuild.
** Must be ordered separately from RegO
®
.
1- 5/16"
Wrench
Flats
stake here
Disassembly and Rebuild Procedure
CAUTION: READ THROUGH ALL OF THESE INSTRUCTIONS, INCLUD-
ING THE NOTICE AND WARNINGS ON THE BACK OF THIS SHEET,
BEFORE BEGINNING ANY DISASSEMBLY OR REPAIR.
NOTE: Repairs must be performed in a clean area. Hands, clothing, tools
and work area must be completely free of oil, grease and foreign matter to
prevent contamination of component parts and valves.
A. Disassembly
CAUTION: EVACUATE ALL GAS FROM THE SYSTEM BEFORE ANY
DISASSEMBLY OR REPAIR.
1. Remove 2" plug from valve outlet.
2. Turn handwheel counterclockwise as far as it will go to release any
gas remaining in the container.
CAUTION: Do not apply force after valve is fully open.
3. Remove flange by removing the (8) flange cap screws. Set all aside.
4. Remove and discard the flange gasket.
5. Using a 13/16" wrench, remove four cap screws from bonnet and set
aside for reassembly. Carefully remove bonnet assembly from valve
body. Set seat disc retainer aside.
6. Remove body gasket and discard.
7. Clamp the square section of bonnet in a vise.
8. Remove handwheel locknut with a small wrench to allow removal of
washer, information disc and handwheel. Set items aside.
Figure 4
-Screw Tightening Sequence
Apply minimum
300±25 in-lbs (25±2
ft-lbs) torque using a
tightening sequence
of alternating bolts in
a crisscross pattern.
Apply minimum
540±25 in-lbs (45±2
ft-lbs) torque using a
tightening sequence
of alternating bolts in
a crisscross pattern.
Bonnet Flange
Outlet Flange
Figure 3-
Seat Disc and Retainer Assembly
Locknut
Washer
Handwheel
Information Disc
Flange Gasket*
Flange Cap Screw (8)
Flange
Plug
10
R EG O
Y E A R
WARRANTY
Stem Sealing
Area
Handwheel Resting Location
