Local pressure gauge

ISA 5.1-2009/2022 (primary element symbols) / PIP PIC001

Drawn as

A PI (or PG) bubble on a thin impulse line from the pipe, often with a small root or isolation valve on the impulse line.

Meaning

Bourdon-tube dial gauge read locally: pump discharges, filters and vessels. Becomes pressure-gauge.

Variants

ISA tag is PI; many companies use PG
A gauge with a seal or snubber shows extra small symbols on the impulse line
A small box with a letter on the gauge branch (F, S, D, P) is a project-specific accessory such as a snubber, seal, filter or pulsation damper: read the drawing legend, then model the gauge only