DO YOU HAVE CERTIFICATE OF CALIBRATION?

Certainly, each product get calibration before out of our factory.

Manual and Automatic Emergency Cut-off Self-Closing Safety Valve

Name: Manual and Automatic Emergency Cut-off Self-Closing Safety Valve
Brand: Hebei Zehong Technology Co., Ltd.
SKU: 2140055252

Hebei, ChinaHebei Zehong Technology Co., Ltd.

US$3.10-4.00

50 Pieces

Sample price:US$7.00/piece.Request sample

Product profile

Customization

Available

Temperature

Ordinary Temperature

Certification

GS, RoHS, CE, ISO9001

Model NO.

DQRF

Media

Gas

Standard

Connection Mode

Internal Thread

Power

Solenoid

Material

Rubber

Type

Self-Operated

Valve Closing Method

Pulse-Driven/Manual

Cut-off Time

<0.3s

Enclosure Protection Grade

IP66

Valve Opening Method

Manual Reset

Transport Package

Carton

Specification

0.2

Trademark

zehong

Origin

China

Key features

Ultra-Fast Cut-off Response: Automatic shut-off time is less than 0.3 seconds for immediate safety.

IP66 Weatherproof Design: Dust-tight and protected against powerful water jets for reliable operation.

Vibration-Activated Safety: Automatically closes in response to harmful strong vibrations.

Manual Reset Capability: Valve opening requires manual intervention to ensure safety compliance.

Explosion-Proof Certification: Potted type with Ex mb IIC T6 Gb certification for hazardous environments.

Wide Gas Compatibility: Suitable for natural gas, LPG, artificial gas, and other non-corrosive gases.

Flexible Connection Options: Available in DN15, DN20, and DN25 connection sizes.

Comprehensive Warranty: 12 months warranty coverage for all mechanical defects.

Company profile

Cooperated with Fortune 500Importers and ExportersSelf-brandedPatents Awarded

Hebei Zehong Technology Co., Ltd.

Hebei, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 5 years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤0.29h

AI-Powered supplier vetting

SummaryThe supplier develops, manufactures, sells, maintains, and installs gas detection instruments and related control, safety, sensing, valve, electronic, and explosion-proof products. It holds multiple management, product, safety, metrology, and explosion-proof certifications, and reports production capacity of millions of gas detection instruments annually. Evidence supports strong R&D and customization capabilities, including ODM, OEM for well-known brands, SDK availability, and recent product development. Service procedures, complaint handling, corrective actions, inventory, and overseas installation, training, repair, maintenance, and debugging capabilities are documented. However, the supplier has no valid contract with associated subcontractors, no overseas warehouse, overseas agent or branch, showroom, or reported offline trade-show participation. Financial records are identified for 2022–2024, but their contents are not provided. Customer-case evidence is limited to OEM service for well-known brands.

Supplier typeThe supplier is a manufacturer and service provider focused on gas detectors, control systems, safety equipment, sensors, valves, electronic products, explosion-proof electrical products, and related mechanical equipment services. Its stated production line can produce millions of gas detection instruments annually, indicating a product-manufacturing rather than purely trading profile.

CertificationsThe supplier reports ISO9001, ISO14001, ISO45001 or GB/T28001 management certifications, CCC, CE, explosion-proof and metrology certifications, SIL certification, dual-certification certificates, and a high-tech enterprise certificate. These certifications explicitly support management-system, product-compliance, safety, and quality credentials.

After-Sales capabilityThe supplier has documented procedures and records for corrective and preventive actions, customer complaints, and supplier-service assessment, and provides installation, training, repair, maintenance, and debugging. It also reports inventory capability, but lacks overseas agents or branches, overseas warehousing, and overseas showrooms; therefore, its service processes are evidenced, while its overseas physical coverage is limited.

R&D capabilityThe supplier reports new products during the past year, ODM service, OEM service for well-known brands, and an available SDK. These are explicit indicators of product-development and technical integration capability.

Production capacityThe supplier reports a production line capable of producing millions of gas detection instruments annually, in-stock capability, and peak-season order fulfillment within 15 working days. It also has written supplier-service assessment procedures and records, although the absence of a valid contract with associated subcontractors is a documented management weakness.

Customization capabilityThe supplier explicitly offers customization from samples, full customization, customization from designs, minor customization, and flexible customization. This directly demonstrates broad customization coverage across customer-provided samples, designs, and modification requirements.

Client casesThe supplier states that it provides OEM services for well-known brands, which is direct evidence of at least one type of customer engagement. No brand names, project details, volumes, performance results, or broader customer references are provided, limiting the depth of case validation.

Product Q&A

Q:Are you a factory or a trading company?

Factory, more than 15 years experience in gas detector manufacturing.

Q:What is your MOQ and the leading time?

MOQ:50-500PCS, leading time:7-15 days, also accept customization.

Q:Can we buy some samples for testing?

Yes, samples can be available,clients need to afford the freight charge.

Q:Can we put our logo or designs on your package?

Yes. we can. OEM ODM service are welcome.

Q:Why should we choose you?

We focus on gas monitoring and IoT big data, and is a high-tech enterprise integrating R&D, production, and sales. Its business covers the entire industry chain of gas detection, analysis and control systems, as well as IoT big data platforms.