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Accessories & Parts

155L Position Indicator

The Model 155L Visual Indicator is a device that enables the user to determine the extent of opening of a control valve. It consists of an adaptor threaded into the valve bonnet, a rod threaded into the main valve stem, a sealed Pyrex sight glass, and a protective aluminum housing. The indicator rod moves as the valve opens and closes. The 155L may be installed on virtually any OCV control valve, and can be done so without any disassembly of the valve itself. Since the assembly is not sealed from the diaphragm chamber of the main valve, it provides a convenient point for bleeding air via the 1/8” NPT port located at the top of the sight glass.

WHERE USED – The 155L is the standard visual indicator on fuel service valves. Optional on virtually any control valve not already employing a limit switch or position transmitter.

MODEL 155L MATRIX

MAX WORKING PRESSURE: 300 PSI

155Lmatrix

155Ldrawing

MATERIALS

Indicator Rod: Monel

Adapter: Stainless Steel

Housing: Aluminum

Sight Glass: Pyrex

Sight Glass Seals: Buna-N

SCHEMATIC SYMBOL

The Model 155L is shown on OCV Valve Schematic as:155Lsymbol

155Ldiag
EXAMPLE: Shown here on a Model 120-6 Rate of Flow / Check Valve.