2
Unidirectional Series
Operation and Maintenance Manual
The valve must only be installed, commissioned, operated, and repaired by qualied personnel.
The device generates a large mechanical force during normal operation.
All installation, commissioning, operation, and maintenance must be performed under strict observation of all applicable
codes, standards, and safety regulations.
Observe all applicable safety regulations for valves installed in potentially explosive (hazardous) locations.
INTRODUCTION
The Bray/ VAAS Series 940/950/952/980/985 provides repeatable unidirectional shutoff in a rugged, single-piece cast body.
Featuring both metal and soft seating, the Bray/ VAAS Unidirectional Series gate valve caters to all types of unidirectional
sealing requirements across a wide range of industries.
Additional information about Unidirectional Series valves – including application data, engineering specifications, and
actuator selection is available from your Bray/ VAAS distributor or sales representative.
UNPACKING
Ensure the box is not damaged externally. Remove the valve from the packaging and check for any damage to the valve
and its components during transit.
Valve size and brief material specification of body (markings such as “SS” or “DI”) are marked on the valve body. A stainless
steel nameplate (below) afixed to the yoke of the valve contains most of the relevant information on the valve including
Bray/VAAS work order number and unique serial number of the valve. These details should be quoted for all requirements
of service and spares.
SERIAL NUMBER
SIZE MODEL FLG. DRILL BODY GATE
SEAT PACKING CWP MAX TEMP
STORAGE
Wrap the valve with a polyethylene cover. Cover the ports for pneumatic actuator/accessories with plastic caps. Store
these valves in the same packing indoors and without direct exposure to the environment.
If the valve is to be stored for a long period of time before installation, it should be stored in a vertical position (preferable) and
in a cool, clean area to prevent damaging effects on the packing.
Gate should be off the seat to prevent compression set.
To Next Page
Loading...
Need help?
General