The JM742X diaphragm-bottom sludge valve is a device installed at the bottom of a sedimentation tank, primarily used for removing sludge and impurities from the tank bottom. Its core working principle involves using a 2-way 4-way directional valve to control the main valve's opening and closing, thus enabling the sludge discharge function.

Core Structure

This valve is composed of main valve, two-position four-way directional valve, valve disc, and other components. When the directional valve is in one state, the main valve's cavity is filled with water, while the upper cavity is open to the atmosphere. The diaphragm, under pressure, drives the valve disc upward, causing the main valve to open. When the directional valve switches to the second state, the main valve's cavity drains, and the upper cavity is filled with water, closing the main valve.

Technical Specifications

Nominal Pressure: 1.0-1.6 MPa

Closing and opening action pressure: 0.15-0.6 MPa

Diaphragm Drive Medium: Clean Water, Air

‌Applicable Mediums: Raw Water, Clear Water, Wastewater‌

Operating Temperature: 0-80℃

Nominal Pipe Size: DN100-400mm

Material and Application Scenarios

Body: HT200 Cast Iron or Ductile Iron

Bushing: Stainless Steel

Diaphragm: Wear-resistant Nitrile Rubber or Nylon

‌Application Scenarios: Water plants, environmental protection, municipal facilities, petrochemicals, etc.‌

Typical Applications

This valve is commonly used in wastewater treatment plants and sedimentation basins where regular sludge removal is needed. It boasts strong sealing, stable operation, and easy maintenance.