0519-85611105

18118397268

Banner
Home > company's product > Constant pressure hydration series
Constant pressure water supply and exhaust device

Constant pressure water supply and exhaust device

Product Details

Constant pressure water supply and exhaust device

Product introduction

LH-DP constant pressure water supply and exhaust device integrates the functions of constant pressure, exhaust and automatic water supply. Mainly used in closed circulating water systems.

The constant pressure water supply and exhaust device has an exhaust function to ensure that no air or air bubbles are generated during the system operation, which can effectively reduce air blockage or cavitation in the system.

The constant pressure water supply and exhaust device keeps the system pressure within a set interval to ensure the safe and stable operation of the system.

working principle

Constant pressure: When the system pressure is too high, water in the system overflows into the atmospheric tank until the system pressure returns to the set value. When the system pressure is too low, the constant pressure pump injects water from the atmospheric tank into the system until the system pressure returns to the set value.

Make-up water: The constant-pressure make-up water exhaust device detects the water level in the tank by means of a liquid level sensor on the atmospheric tank. If the water level drops below the set value, the water supplement electric valve opens, and the water supplement electric valve is not closed until the water level in the expansion tank reaches the set upper limit.

Exhaust: High-pressure water in the system enters the atmospheric tank, because the solubility of the gas in atmospheric water is lower than the solubility in high pressure. At this time, the excess gas will be precipitated from the water and discharged through the automatic exhaust valve on the top of the tank. At the same time, the pump pumps the treated water back to the system, and the gas content in the system water will show an unsaturated state, so it can desorb the free gas in the system. Through such a process, the exhaust effect can be effectively achieved.

Pressure Relief: If the system pressure exceeds the limit and the water in the atmospheric tank is at a high level, the safety valve automatically releases pressure.

Selection parameters

Equipment model

Standing tank

Water supply Q (m³ / h)

Interface specifications

Equipment dimensions

Specification (mm)

Total volume
V (m³)

Outside water supply

System pressure relief port

System water inlet

Long L
(mm)

Wide W
(mm)

High H
(mm)

LH-DB-SQL400

Φ400

0.1

1 ~ 2.4

G1

G1

G1

1000

750

1500

LH-DB-SQL600

Φ600

0.32

1 ~ 2.4

G1

G1

G1

1200

750

1800

LH-DB-SQL800

Φ800

0.79

1.6 ~ 4

G1

G1

G1

1400

820

2300

LH-DB-SQL1000

Φ1000

1.29

1.6 ~ 4

G1

G1

G1

1600

1020

2400

LH-DB-SQL1200

Φ1200

2.21

3 ~ 7

G1

G1

1800

1220

2760

LH-DB-SQL1400

Φ1400

3.11

3 ~ 7

G1

G1

2000

1420

2870

LH-DB-SQL1600

Φ1600

4.79

6 to 10

G1

G1

2300

1620

3300

LH-DB-SQL1800

Φ1800

6.23

6 to 10

G1

G1

2500

1820

3400

LH-DB-SQL2000

Φ2000

7.9

6 to 10

G1

G1

2700

2020

3460

Inquiry