How to deal with internal leakage of valve?

Remove the debris on the sealing surface and repair or replace the sealing pair.

What is the problem caused by the inflexibility of valve opening and closing?

First, the executive mechanism failure; Second, there are foreign objects blocked valve plate.

How to solve the valve opening and closing is not flexible?

When the actuator fails, repair or replace the actuator; If foreign objects block, remove foreign objects, and be careful not to damage the sealing surface.

Can the valve actuator adjust itself?

The valve actuator has been debutted before leaving the factory, and non-professional personnel are forbidden to adjust.

Industrial Quick Action Blind Valve DN300-DN1400 for Heavy-Duty Applications

Name: Industrial Quick Action Blind Valve DN300-DN1400 for Heavy-Duty Applications
Brand: HENAN QUANSHUN FLOW CONTROL SCIENCE & TECHNOLOGY CO., LTD.
SKU: 2193355835

Henan, ChinaHENAN QUANSHUN FLOW CONTROL SCIENCE & TECHNOLOGY CO., LTD.

US$450.00

2 Sets

Product profile

Customization

Available

Media

Gas

Temperature

Ordinary Temperature

Type

8 or Fan Shap

Material

Cast Iron

Connection Form

Flange

Pressure

High Pressure

Actuator

Manual

Seal Surface

Parallel Gate Valve

Thread Position of Valve Rod

Outside Gate Valve

Usage

Regulation

Standard

DIN

Application

Industrial Usage

Valve Size

DN300-DN1400

Valve Pressure

0.05-0.15MPa

Valve Body Material

Q235

Seal Ring

Silicon Rubber

Transport Package

Wooden Box

Specification

DN150-DN900

Trademark

QUANSHUN VALVE

Origin

China

HS Code

8481804090

Production Capacity

500 Sets / Month

Key features

Zero Leakage Safety: Ensures 100% safety isolation with zero leakage in closed position, preventing media leakage.

Single-Hand Operation: One person can easily and safely operate the valve without special training or heavy tools.

No Pipeline Expansion: Switches valve plate without expanding the pipeline, saving time and reducing labor intensity.

Compact Lightweight Design: Simple structure reduces weight and space requirements, making maintenance and installation easy.

Full-Bore Flow Channel: Designed with a full-bore structure allowing for zero flow resistance and efficient media passage.

Safety Locking Device: Added locking device on handwheel prevents operator errors and ensures accident-free operation.

Wide Application Range: Suitable for petroleum, chemicals, steel, and complex conditions involving gas, liquid, and slurry.

High Pressure Resistance: Capable of handling high pressure with options for Class 150-900 and various material grades.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceCooperated with Fortune 500

HENAN QUANSHUN FLOW CONTROL SCIENCE & TECHNOLOGY CO., LTD.

Henan, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedExport Year: 1 year CertifiedNearest Port: Qingdao PortAverage Response Time: ≤3.74h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad customization, 3D design, ODM, and OEM capabilities, supported by reported new-product development and one national science and technology progress award. Quality, supplier-service assessment, corrective-action, and complaint-handling procedures are documented and followed. The supplier reports inventory capability, export rights, and multiple accepted trade terms, but has no overseas warehouse or showroom and no valid manufacturing-capacity contract with related subcontractors. Production information identifies one production line, 11–20 quality-control staff, and stated valve outputs. Certification evidence includes ISO9001:2015, ISO45001:2018, ISO14001, and CE. Financial credibility cannot be established because the provided financial fields report zero values for the stated periods. Customer references are not explicitly provided.

Supplier typeThe supplier operates manufacturing equipment including machining, welding, line cutting, and painting facilities; it reports one production line, inventory capability, export rights, and service proximity to Qingdao Port. However, it has no valid manufacturing-capacity contract with related subcontractors and no overseas warehouse or showroom.

CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, and ISO14001 certifications, together with CE and other product-certification capability. These are explicit certification holdings or capabilities in the provided information.

After-Sales capabilityThe company reports technical support and non-traditional after-sales service, while its service-capability procedures, corrective and preventive actions, and customer-complaint handling have written procedures and followed records. This supports a structured after-sales process.

Financial creditThe provided financial records report zero operating revenue, operating cost, gross profit, operating profit, gross margin, and current ratio for the stated periods. These reported figures do not provide positive evidence of financial strength and indicate a material credibility concern.

R&D capabilityThe supplier reports new products within the past year, provides 3D software design and ODM services, supplies OEM services to well-known brands, and holds one national science and technology progress award. It does not have an available SDK, but the broader evidence supports innovation capability.

Production capacityThe supplier identifies machining, welding, line-cutting, and painting equipment, reports 11–20 quality-control staff, one production line, inventory capability, and stated outputs for several valve products. Its lack of a valid manufacturing-capacity contract with related subcontractors limits assurance regarding contracted capacity.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, flexible customization, and minor customization, as well as 3D software design and ODM services. This indicates broad customization coverage across design and manufacturing requirements.

Product Q&A

Q:Why choose our quick action line blind?

Quanshun Quick Line Blinds Offer a combination of two essential criteria--Zero Leakage and Safe & Easy blinding by untrained one operator

Q:What are the advantages compared with traditional line blind valve?

1.No line spread: The unique & simple Gear-set mechanism makes a gap to switch blind plate without line spreading 2.Auto positioning of blind plate: Blind plate is set on correct position by positioner 3.Hand wheel torque indicator: Torque indicator provides correct positioning of tightening untightening operation 4.Safety locking: Locking devices with Pad Lock with key secure safety from incorrect operation by unauthorized operator 5.Self stick free mechanism: Unique gear set mechanism shall fr

Q:What causes leakage at the valve and pipe connection?

First, the sealing surface is damaged or contaminated by dirt; Second, gasket failure; Third, the pipe flange pressure is uneven or not pressed.

Q:How to deal with leakage at the connection of valve and pipeline?

The following measures can be taken: repair the sealing surface or clean up the dirt; Replace the gasket; Press the flange bolt evenly.

Q:What is the cause of leakage in the valve?

There is mainly debris on the sealing surface, or the sealing surface is damaged.