INSTALLATION, OPERATION AND MAINTENANCE MANUAL (IOM)
IOM - 1049
03-16
SECTION I
I. DESCRIPTION AND SCOPE
The Model 1049 Secure-Gard is a pilot operated vent
valve intended for installation on atmospheric and low
pressure storage tanks, vapor recovery systems, and
process systems.
Model 1049
Secure-Gard Pilot Operated Vent Valve
WARNING
The Model 1049 is a low pressure pilot operated valve.
In as such, does not supply vacuum relief. If vacuum
relief is required, it should be provided by a separate
device.
CAUTION
Follow your company’s safety procedures to avoid
injury to personnel or damage to equipment.
SECTION III
III. INSTALLATION
The inlet and outlet flanges are normally standard ANSI 150 lbs. class flanges unless otherwise indicated and
should be connected following accepted piping practices.
SECTION II
II. PRIOR TO INSTALLATION
Remove all packing material inside and outside of the valve prior to installation.
SAFETY WARNING:
In addition to your company’s safety procedures, this section includes guidelines that should
be followed during the installation, operation, and maintenance of Valve Concepts, Inc’s Pilot Operated Vent Valve.
It is necessary to completely read and understand these guidelines.
Tank or system over pressure protection is the primary function of pilot operated vent valves. It must be selected to
meet the total pressure flow requirements within the Maximum Allowable Working Pressure of the system on which
it is installed. Consult API Standard 2000 for tank protection sizing procedures. Improperly specified vent valves
may result in structural damage to the tank or system, and may cause severe personal injury or death.
Valves are pre-set at the factory per customer purchase specifications. DO NOT change the set pressure without
consulting the factory or your local VCI representative. Improper adjustment may cause the valve to malfunction.
DO NOT attempt to remove the valve from the tank or process vessel without first bleeding all pressure from the
system. ALTERNATIVE MEANS OF PRESSURE VENTING MUST BE PROVIDED WHEN THE VALVE IS OUT
OF SERVICE.
The valve has been exposed to process while in service. Observe all plant procedures and Material Safety Data
Sheets (MSDS) for the products in the system while inspecting, adjusting, or servicing the valve. Take appropriate
safety precautions regarding eye protection, respiration and skin contact.
ISO Registered Company
