---
title: "Level and Temperature Control System for an Upper Water Tank — asset register"
doc_type: pid-asset-register
tags: [RESERVOIR DU HAUT, manual-valve-1, HV-7, manual-valve-2, TV-42, 19-1, filter-1, 13-1, LAHH-91, LAH-91, LSH-91, LY-91, HMY-91, HMS-91, TC-42, control-valve-1, LV-41, check-valve-1, FE-15, meter-1]
summary: "This P&ID illustrates the level and temperature control system for an upper water storage tank, including flow measurement and various manual valve operations."
---

# Level and Temperature Control System for an Upper Water Tank

**Source drawing:** pid-schema.jpg · **Detected components:** 42

## Equipment (4)

- **RESERVOIR DU HAUT** — Upper Water Tank. EAU Connects: 13-1, 13-2, 32-17, LSH-91, TT-42, LT-41, control-valve-1, check-valve-2.
- **filter-1** — Filter. Connects: 19-1, manual-valve-3.
- **orifice-plate-1** — Orifice Plate. Connects: check-valve-2, FE-16.
- **heater-1** — Heater. Connects: HV-1, HV-2.

## Instruments (22)

- **HV-7** — Hand Valve Indicator. Connects: manual-valve-1.
- **TV-42** — Temperature Valve Indicator (top). Connects: manual-valve-2, TC-42.
- **LAHH-91** — Level Alarm High-High (Panel Mounted). Connects: LAH-91, RESERVOIR DU HAUT.
- **LAH-91** — Level Alarm High (Panel Mounted). Connects: LAHH-91, HMY-91, LSH-91.
- **LSH-91** — Level Switch High (Field Mounted). Connects: RESERVOIR DU HAUT, LY-91, LAH-91.
- **LY-91** — Level Converter/Relay (Panel Mounted). Connects: LSH-91, HMS-91.
- **HMY-91** — Hand-Manual Output (Panel Mounted). Connects: LAH-91, TC-42.
- **HMS-91** — Hand-Manual Switch (Panel Mounted). Connects: LY-91, control-valve-1.
- **TC-42** — Temperature Controller (Shared Display/Control). Connects: TV-42, HMY-91, TT-42, Lumiere alarme.
- **LV-41** — Level Control Valve Indicator. Connects: control-valve-1, LC-41.
- **FE-15** — Flow Element. Connects: check-valve-1.
- **meter-1** — Meter (Field Mounted). M Connects: FE-14, check-valve-2.
- **FE-14** — Flow Element. Connects: meter-1.
- **FE-16** — Flow Element. Connects: orifice-plate-1.
- **HV-6** — Hand Valve Indicator. Connects: manual-valve-3, manual-valve-4.
- **HV-1** — Hand Valve Indicator. Connects: manual-valve-4, heater-1.
- **HV-2** — Hand Valve Indicator. Connects: heater-1, manual-valve-5.
- **TV-42** — Temperature Valve Indicator (bottom). Connects: manual-valve-6, TT-42.
- **TT-42** — Temperature Transmitter (Field Mounted). Connects: RESERVOIR DU HAUT, TV-42, TC-42, 13-2.
- **LT-41** — Level Transmitter (Field Mounted). Connects: RESERVOIR DU HAUT, 13-2, LC-41.
- **LC-41** — Level Controller (Shared Display/Control). Connects: LT-41, LV-41, LIC-41.
- **LIC-41** — Level Indicating Controller (Panel Mounted). Connects: LC-41.

## Valves (9)

- **manual-valve-1** — Manual gate valve. Connects: 19-1, HV-7.
- **manual-valve-2** — Manual gate valve with solenoid actuator. S Connects: 19-1, TV-42.
- **control-valve-1** — Control globe valve. Connects: 13-1, RESERVOIR DU HAUT, LV-41, HMS-91.
- **check-valve-1** — Check Valve. Connects: 13-1, FE-15.
- **check-valve-2** — Check Valve. Connects: RESERVOIR DU HAUT, meter-1, orifice-plate-1.
- **manual-valve-3** — Manual gate valve. Connects: filter-1, HV-6.
- **manual-valve-4** — Manual valve with square actuator. Connects: HV-6, HV-1.
- **manual-valve-5** — Manual gate valve. Connects: HV-2, manual-valve-6.
- **manual-valve-6** — Manual gate valve with solenoid actuator. S Connects: manual-valve-5, 19-2, TV-42.

## Lines (6)

- **19-1** — Process Line. Connects: manual-valve-1, manual-valve-2, filter-1, 13-1.
- **13-1** — Process Line. Connects: 19-1, RESERVOIR DU HAUT, control-valve-1, check-valve-1.
- **19-2** — Process Line. Connects: manual-valve-6, 13-2.
- **13-2** — Process Line. Connects: 19-2, RESERVOIR DU HAUT, TT-42, LT-41.
- **32-17** — Process Line. Connects: RESERVOIR DU HAUT, line-2-32-EAU-5.
- **line-2-32-EAU-5** — Process Line. 2 32 EAU 5 Connects: 32-17.

## Other (1)

- **Lumiere alarme** — Alarm Light. Connects: TC-42.