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AVEVA™ Unified Engineering

INST Symbol Keys

  • Last UpdatedAug 19, 2025
  • 8 minute read

Component Description

SKEY

Plotted Symbol

P-points

Note

Instrument

II**

1,5

Instrument - Angle

IA**

1,2,5

Instrument - Offset

IO**

1,3

Instrument - Return

IR**

1,4

Instrument - Dial

IDPL

6

Instrument - Dial Flanged

IDFL

6

Orifice Plate

OP

Restrictor Plate

RP

Rupture Disk

DR

Valve - Angle Relief/Vent

RA**

1,5

Valve - Angle Pressure Reducing

XA**

1,5

Valve Control

CV**

1,5

Valve - Angle Control

CA**

1,5

Valve - 3 Way Control

C3**

1,5

Valve - 4 Way Control

C4**

1,5

Valve - Control Square Indicator

SV**

1,5

Valve - Angle Control Square Indicator

SA**

1,3

Valve - 3 Way Control Square Indicator

S3**

1,5

Valve - 4 Way Control Square Indicator

S4**

1,5

Valve - Control Motorised Indicator

MV**

1,5

Valve - Angle Control Motorized Indicator

MA**

1,5

Valve - 3 Way Control Motorized Indicator

M3**

1,5

Valve - 4 Way Control Motorized Indicator

M4**

1,5

Valve - Control Hand Indicator

HV**

1,5

Valve - Angle Control Hand Indicator

HA**

1,5

Valve - 3Way Control Hand Indicator

H3**

1,5

Valve - 4Way Control Hand Indicator

H4**

1,5

Valve - Pressure Reducing

XV**

1,5

Valve - Relief/Vent

RV**

1,5

Level Gauge

LG**

1

One-Level Multiport Valve

JL**

1,7

One-Level Multiport Valve

JT**

1,7

Two-Level Multiport Valve

JB**

1,7

Two-Level Multiport Valve

JK**

1,7

Two-Level Multiport Valve

JC**

1,7

Two-Level Multiport Valve

JV**

1,7

Two-Level Multiport Valve

JA**

1,7

Two-Level Multiport Valve

JP**

1,7

Two-Level Multiport Valve

JE**

1,7

Two-Level Multiport Valve

JO**

1,7

Three-Level Multiport Valve

JW**

1,7

Three-Level Multiport Valve

JY**

1,7

Three-Level Multiport Valve

JU**

1,7

Three-Level Multiport Valve

JM**

1,7

Three-Level Multiport Valve

JX**

1,7

Three-Level Multiport Valve

JN**

1,7

Three-Level Multiport Valve

JZ**

1,7

Three-Level Multiport Valve

JG**

1,7

Note:

1

Replace the ** characters in the symbol key with one of the following end condition identifiers:

BW for butt weld

CP for compression

SW for socket weld

FL for flanged

SC for screwed

PL for plain

2

To use this symbol, the p-points must be arranged as shown in the following diagram:

3

To use this symbol, the p-points must be arranged as shown in the following diagram:

Note: The horizontal offset may be zero; that is, P0, P1, P2, and P3 may be coplanar.

4

To use this symbol, the p-points must be arranged as shown in the following diagram:

Note: The horizontal offset may be zero; that is, P0 and P1 (and similarly P2 and P3) may be coincident.

5

If an orientation p-point (P3) is present in the point set and is oriented away from the XYZ axes, then the orientation of this p-point will be shown on the isometric.

6

Instrument dials can have a P3 with an unset bore for orienting the dial. This p-point will normally be positioned perpendicular to the dial face, on the dial axis. A message will be output near the component showing the orientation of P3.

7

P-Point 11 is the Spindle attachment point and its PURP attribute should be set to 'SPIN'. These Multiport Valves may have up to two flushing/draining connections:

  • These must be P-Point 9 and P-Point 10.

  • The isometric will only show a symbolic line and a note CONT TO "name" for each connection.

  • There will be no materials or isometric representation of the branch connection to these points.

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