Product Description

Discharge Valve Product Introduction & Technical Specifications

1. Product Introduction

A discharge valve is a dedicated valve installed at the bottom of reactors, storage tanks, silos, and mixing tanks. It is mainly used for material discharge, emptying, and on-off control of pipelines.

Structurally, it usually adopts a bottom valve design and is installed with the reactor bottom flange. This effectively reduces material residue and prevents material bridging, making it widely used in chemical, pharmaceutical, dye, food, metallurgy and other industries for solid-liquid, slurry, and granular material working conditions.

2. Technical Specifications

 Nominal Diameter (DN): DN25 DN300

 Nominal Pressure (PN): PN1.0, PN1.6, PN2.5, PN4.0 MPa

 Working Temperature:

o Carbon steel / Stainless steel: -20 425

o PTFE-lined structure: -20 180

 Connection Type: Flanged, welded

 Actuation Type: Manual, pneumatic, electric

 Disc Type: Upward-expanding, downward-expanding

 Leakage Class: Soft seal: Class IV VI; Hard seal: Class IV

 Applicable Media: Liquid, slurry, suspension, granules, powder, corrosive media, etc.

3. Main Component Materials

Valve Body

 Carbon steel: WCB, A105

 Stainless steel: 304, 316, 304L, 316L

 Lining: F46 lined, rubber lined, PO lined

Disc / Wedge

 2Cr13, 304, 316

 Hardfacing alloy, PTFE lined

Stem

 2Cr13, 304, 316

Seal

 Soft seal: PTFE, reinforced nylon, rubber

 Hard seal: Hard alloy, stainless steel

4. Product Features

 Reactor-bottom dedicated design, no dead corners, not easy to accumulate materials, thorough discharge

 Upward-expanding type: Smooth flow path, low resistance, good sealing performance

 Downward-expanding type: Does not interfere with bottom agitation, suitable for reactors with anchor / frame agitators

 Smooth opening and closing, low operating torque

 Wear-resistant, corrosion-resistant and erosion-resistant sealing surface for long service life

 Can be equipped with pneumatic / electric actuators for remote control and automatic discharging

 PTFE-lined structure is suitable for strong corrosive and easily crystallized working conditions

 Compact structure, easy installation and maintenance