What should be done if there is pressure at the valve outlet?

There should be no pressure at the valve outlet. If pressure exists, a check valve must be installed.

DN20 Stainless Steel Diaphragm Solenoid Valve Threaded Drainage Control Valve

Name: DN20 Stainless Steel Diaphragm Solenoid Valve Threaded Drainage Control Valve
Brand: Zhejiang Hongju Automatic Control Valve Co.,Ltd.
SKU: 2266229605

Zhejiang, ChinaZhejiang Hongju Automatic Control Valve Co.,Ltd.

US$7.24-100.25

10 Pieces

Sample price:US$7.24/piece.Request sample

Product profile

Media

Water,Oil,Air,etc

Temperature

-40℃-150℃

Actuator

Electric

Model NO.

Connection Form

Thread

Type

Direct Acting

Material

Stainless Steel

Pressure

1.0MPa

Valve Structure

Direct Action Diaphragm Structure

Power Supply

AC Solenoid Valve/DC Solenoid Valve

Usage

Safety, Drain, Temperature Control, Flow Control

Standard

Customizable

Application

Industrial Usage, Water Industrial Usage, Household Usage

Sealing Material

NBR, EPDM, FKM, PTFE

Voltage

Customizable

Transport Package

Wooden/Carton

Specification

DN08-DN100

Trademark

customizable

Origin

China

HS Code

848180

Production Capacity

5000/Pieces/Month

Key features

Multiple Material Options: Available in 304 and 316L stainless steel for corrosion resistance.

Customizable Voltage: Voltage can be tailored to specific requirements.

Diverse Sealing Materials: Offers NBR, EPDM, FKM, and PTFE sealing options.

Direct Acting Structure: Features direct action diaphragm structure for reliable control.

Eco-Friendly Packaging: 100% recyclable materials with shockproof and waterproof protection.

Free Transit Replacement: Free replacement provided for any damage occurring during shipping.

Real-Time Tracking: Provides real-time tracking information after dispatch.

Company profile

Zhejiang Hongju Automatic Control Valve Co.,Ltd.Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 2 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤24h

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company associated with manufacturing-sector companies and operates 12 production lines. It manufactures ordinary valves and plugs and provides valve-related sales and R&D activities. Customization and ODM services are available, supported by recent new-product information, while finished-product inspection and service-management procedures are documented and followed. However, the supplier holds no stated management-system certifications, has limited export experience of two years with one export-trade staff member, and reports no overseas warehouses, showrooms, agents, branches, or offline trade-show participation. Production capability is substantial by line count, but continuous quantity reconciliation is not performed for each batch or production volume. Financial information is insufficient for a credibility judgment, and no customer cases are provided.

CertificationsThe supplier’s certification of management systems is explicitly listed as NIL. This indicates no stated management-system certification in the provided information.

After-Sales capabilityThe supplier has written procedures and followed records for service evaluation, corrective and preventive actions, and customer complaints. However, it reports no overseas warehouse, showroom, agent or branch, offline trade-show participation, or overseas service country coverage, limiting evidence of international service reach.

R&D capabilityThe supplier reports two years of total R&D engineer experience, new product information within the past year, ODM availability, and broad design-service options. It does not provide an SDK and does not serve as an OEM supplier for popular brands, so the evidence supports basic product-development capability but not broader technical integration or brand-OEM strength.

Production capacityThe supplier reports 12 production lines and equipment including CNC lathes, lathes, drilling machines, and winding machines, with valve and plug manufacturing in its stated scope. Finished-product inspection instructions are uniformly followed, but continuous quantity reconciliation is not performed for every batch or production volume.

Customization capabilityThe supplier explicitly offers customization from samples and designs, full and minor customization, flexible customization, and ODM services. These consistent statements provide direct evidence of broad customization capability.

Product Q&A

Q:Can the solenoid valve be energized continuously?

Standard models should be energized for no more than 60 minutes. For 24+ hours of continuous operation, use a model with an energy-saving module to prevent overheating.

Q:How do Normally Closed and Normally Open models work?

Normally Closed opens when energized and closes when power is off. Normally Open closes when energized and opens when power is off, requiring at least 0.5 KG of pipeline pressure to open.

Q:What precautions should be taken when using with controllers?

Set both upper and lower limits on temperature controllers or level sensors to allow rest intervals. Setting only one limit causes frequent operation and may burn out the coil.

Q:How should the valve be installed regarding flow direction?

Install according to the arrow on the valve body or base indicating flow direction. Do not install in reverse.

Q:What are the requirements for dirty media?

This product is not suitable for media with large particles or impurities. If the medium is dirty, a filter must be installed.