Emerson VSSG, VSG manual Symbols and Identifications, General Information, Position Transmitter

Section 1 • General Information

TI	Temperature Indicator or	TW	Thermowell	YZT	Axial proximitor
	Thermometer	V	Vent		Transmitter - Axial
					Displacement
TIT	Temperature Indicator	VG	Gauge Valve
	Transmitter			YZU	Axial Proximitor
		VTRI	Venturi
TRV	Transfer Valve - 3-way or				Monitoring System
		VLV	Stop Valve
	6-way Valve			ZE	Position Element
TS	Heat Exchanger Tube Side	XV	Solenoid Valve		- Positioner
TSH	Temperature Switch High	YE	Vibration Probe	ZI	Position Indicator
TSHH	Temperature Switch	YSH	Vibration Switch High	ZIT	Position Indicating
					Transmitter
	Shutdown High High	YSHH	Vibration Switch
				ZT	Position Transmitter
TTSL	Temperature Switch Low		Shutdown High High
					- Blind
TSLL	Temperature Switch	YT	Vibration Transmitter
	Shutdown Low Low	YU	Vibration Monitoring
TT	Temperature Transmitter		System
	- Blind	YZE	Axial Proximitor Probe -
TV	Temperature Control		Axial Displacement
	Valve

Symbols and Identifications

Use this list to identify components shown in the Piping & Identification Diagram.

3-Way Valve		Suction Strainer
Angle Valve	M	Motorized Valve
Globe Valve
	T	3-Way Thermostatic Valve
Gate Valve		Hand Expansion Valve
Butterfly Valve		Restriction Orifice
Ball Valve		Rupture Disc
Schrader Valve		Inlet Pressure Regulating
Pressure Safety Relief		Valve
Valve		Outlet Pressure

TW

Diaphragm

Pressure-Balanced

Vilter Venturi Injector

Nozzle

Flange Set

Pipe Reducer

Thermowell

Drive Coupling

Spring-Closing Drain	Regulating Valve
Valve	Differential Pressure
Block & Bleed Manifold	Regulating Valve
	Pneumatic Actuator
S
	Control Valve Fail Close
Solenoid Valve
S

CInsulation Not by Vilter

V

Insulation by Vilter

Vibration Absorber

QE Heater

3-Way Solenoid Valve

Needle Valve

Check Valve

Strainer

Pneumatic Actuator Control Valve Open

Diaphragm Actuator

Diaphragm Spring-Opposed

Heat Trace

Low Side Float Valve

1 – 8 VSG/VSSG • Installation, Operation and Maintenance Manual •Vilter/Emerson • 35391SSG