3IMO-317 EN - Issue 10/2020
1. GENERAL
1.1 SCOPE OF THE MANUAL
This instruction manual contains important information regarding
the installation, operation and maintenance of live loaded packing
to the Jamesbury™ Series 815, F815, 818, F818, 830, F830,
838, F838, 860, F860, 868, and F868 Wafer-Sphere™ High
Performance Buttery Valves. See Table 1 for Valve Model. Please
read these instructions carefully and save them for future reference.
WARNING:
AS THE USE OF THE VALVE IS APPLICATION SPECIFIC,
A NUMBER OF FACTORS SHOULD BE TAKEN INTO
ACCOUNT WHEN SELECTING A VALVE FOR A
GIVEN APPLICATION. THEREFORE, SOME OF THE
SITUATIONS IN WHICH THE VALVES ARE USED ARE
OUTSIDE THE SCOPE OF THIS MANUAL.
IF YOU HAVE ANY QUESTIONS CONCERNING THE
USE, APPLICATION OR COMPATIBILITY OF THE VALVE
WITH THE INTENDED SERVICE, CONTACT NELES FOR
MORE INFORMATION.
WARNING:
SAFETY FIRST! FOR YOUR OWN SAFETY, ASK THE
FOLLOWING QUESTIONS BEFORE REMOVING
THE VALVE FROM THE LINE, AND BEFORE ANY
DISASSEMBLY.
1. WHAT’S IN THE LINE? BE SURE YOU KNOW
WHAT FLUID IS IN THE LINE. IF THERE IS ANY
DOUBT, DOUBLE-CHECK WITH THE PROPER
SUPERVISOR.
2. ARE YOU PROTECTED? WEAR ANY
PROTECTIVE CLOTHING AND EQUIPMENT
NORMALLY REQUIRED TO AVOID INJURY
FROM THE PARTICULAR FLUID IN THE LINE.
3. IS THE LINE DEPRESSURIZED?
DEPRESSURIZE THE LINE AND DRAIN THE
SYSTEM FLUID. THE WAFER-SPHERE™
BUTTERFLY VALVE OFFSET SHAFT CREATES
GREATER DISC AREA ON ONE SIDE OF
THE SHAFT. THIS MEANS THAT A WAFER-
SPHERE™ BUTTERFLY VALVE TENDS TO
OPEN WHEN PRESSURIZED ON THE INSERT
SIDE WITHOUT A HANDLE OR AN ACTUATOR
ON THE VALVE.
4. IS THE VALVE CLOSED? BEFORE YOU
INSTALL A WAFER-SPHERE™ BUTTERFLY
VALVE IN, OR REMOVE IT FROM THE LINE,
FULLY CLOSE THE VALVE. THE WAFER-
SPHERE™ BUTTERFLY VALVE MUST BE
REMOVED FROM THE LINE IN THE CLOSED
POSITION TO PREVENT MECHANICAL
DAMAGE TO THE DISC SEALING EDGE. THE
BLADE DRIVE FLATS ON TOP OF THE SHAFT
WILL INDICATE THE POSITION OF THE DISC
(SEE FIGURES 3 AND 4).
1.2 VALVE MARKINGS
The valve has an identication plate attached to the valve bonnet
(see Figure 1).
Figure 1. IDENTIFICATION PLATE
Identication plate markings:
1. Size
2. Valve catalog code
3. Model
4. Pressure
5. Body Material
6. Seat Material
7. Disc Material
8. Shaft Material
9. Maximum/minimum shut-off pressure/temperature
10. Assembly date
1.3 SAFETY PRECAUTIONS
WARNING:
DO NOT EXCEED THE VALVE PERFORMANCE
LIMITATIONS!
EXCEEDING THE PRESSURE OR TEMPERATURE
LIMITATIONS MARKED ON THE VALVE IDENTIFICATION
PLATE MAY CAUSE DAMAGE AND LEAD TO
UNCONTROLLED PRESSURE RELEASE. DAMAGE OR
PERSONAL INJURY MAY RESULT.
WARNING:
SEAT AND BODY RATINGS!
THE PRACTICAL AND SAFE USE OF THIS PRODUCT
IS DETERMINED BY BOTH THE MAXIMUM/MINIMUM
SHUTOFF RATINGS LISTED ON THE IDENTIFICATION
PLATE. THE RATINGS ARE DEPENDENT ON VALVE
TYPE AND SIZE, MATERIALS, AND TEMPER ATURE. DO
NOT EXCEED THESE RATINGS!
