Product Description

Discharge Valve Product Introduction & Technical Specifications

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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.

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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.

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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

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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

Exceptional Flow Control for Demanding Applications

Engineered for efficiency, the Discharge Valve features a smooth, accumulation-free flow path and delivers precise control for material discharge and pipeline isolation at high-temperature points. Its dead-corner-free angle type structure ensures maximum cleanliness and consistent material movement, ideal for critical process industries.


Versatile Compatibility and Durability

Constructed from premium alloy steel and stainless steel, with optional PTFE lining for enhanced chemical resistance, the valve suits a wide temperature range of -20C to 425C (PTFE-lined up to 180C). Its robust design and multiple sealing options assure reliable operation even with corrosive, abrasive, or high-viscosity media.


Remote and Automated Control Solutions

To meet modern process requirements, this discharge valve supports manual, pneumatic, and electric actuation. Adapt it effortlessly for remote or automated valve control, ensuring operational safety and minimizing human intervention in challenging environments.