Water Level Control Valve

Introduction

The Water Level Control Valve (e.g., W811/W831) is a hydraulically operated valve used to maintain water levels in tanks and reservoirs. It ensures accurate, repeatable control without electricity and is ideal for water supply, irrigation, and industrial systems.

Working Principle

A float inside the tank rises and falls with the water level. When the level drops, the float opens the valve to let water in. When the level reaches the set point, the float closes the valve, maintaining the desired water level automatically.

Technical Specifications

• ● Nominal Diameter (DN): DN50–DN600
• ● Pressure Rating: PN10 / PN16 / PN25 / 150LB / 10K / 16K
• ● Temperature Range: 0℃ – 80℃
• ● Medium: Water
• ● Standards: Flanged; GB / ANSI / JIS

Key Features

• ● Accurate and repeatable water level control.
• ● Slow opening and slow closing to prevent water hammer.
• ● Reliable full hydraulic control.
• ● Excellent sealing performance.
• ● Large flow capacity.

Nominal Caliber Dimensions (Unit: mm)

DN	L	H	H1	ΦK	S	Weight（kg）
DN50	230	139	85	173	3/8"	14
DN65	290	159	95	198	3/8"	19
DN80	310	179	102	226	3/8"	23
DN100	350	214	112	265	1/2"	32
DN125	400	214	127	265	1/2"	45
DN150	480	333	145	351	1/2"	68
DN200	600	407	172	436	3/4"	125
DN250	730	476	205	524	1"	200
DN300	850	526	232	606	1"	260
DN350	850	526	262	606	1"	310
DN400	1100	624	292	741	11/2"	560
DN450	1100	624	325	741	11/2"	620
DN500	1250	720	360	1002	2"	880
DN600	1450	835	425	1308	2"	1300