APTech Series VS1000 - Manual (Page 6)

VS1000 Manual P/N 00-15000009 Rev 0
Page 6 of 8
4. INSTALLATION
This section describes how to install the equipment at a user facility.
4.1. General
Review all pertinent safety information before proceeding with installation.
Do not drop the Series VS1000 regulator because damage may result.
Inspect the equipment before installation. If any damage is observed, contact factory for repair.
4.2. VS1000 Mounting
Mount the regulator using the two 10-32 threaded holes, located 1.50 inch (38.1 mm) apart, on the base of
the regulator and on either side of the inlet port using appropriate mounting brackets. For non-standard
models, consult the factory for mounting location.
4.3. VS1000 Pipe Connections
Standard connections are female NPT (internal taper pipe thread type). The inlet port is marked “HP”.
The outlet port is marked “LP”.
Use Teflon pipe thread tape on NPT connections. On 316 stainless steel connections, it is recommended
that Teflon tape is applied to the first NPT thread to prevent galling upon assembly. Use care not to apply
Teflon tape such that loose tape will come free and enter the flow path.
Connect the process fluid supply line to the HP port on the regulator.
Connect a process fluid delivery line from the LP port to the intended point of use. Some installations will
supply an analytical instrument with a low flow and supply a higher flow to a vent or return line to
improve analyzer response time.
Verify the VS1000 is fully closed by removing the acorn nut and turning the stem fully counterclockwise
using a 5/32-inch hex key until no load is being exerted on the range spring. Reinstall the acorn nut over
the stem finger tight.
Label the process fluid lines with the fluid name, flow direction, operating pressure, temperature warning
label, etc. as appropriate.
4.4. VS1000 Steam Connections
The VS1000 steam tube is a 1/2 inch (12.7 mm) outside diameter, 0.049 inch (1.24 mm) wall thickness
316L stainless steel tube. Connect supply and return steam lines using compression type tube fittings,
automatic tube welding, or other appropriate assembly technique. Either side of the steam tube on the
VS1000 can be connected to the steam supply.
Label the steam lines with the fluid name, flow direction, operating pressure, temperature warning label,
etc. as appropriate.
4.5. Leak Test
It is recommended that before introduction of the process fluid that a system leak test be performed using
nitrogen or clean dry air. Slowly pressurize system and use soap solution to check connections for leaks.
Once operating pressure has been reached, shut off the source pressure and monitor for a pressure decay
for a minimum of 4 hours.