Does the valve offer corrosion protection?

Yes, the valve features inside and outside epoxy coating for enhanced corrosion resistance.

Single Disc Spring Loaded Check Valve (Long Type)

Name: Single Disc Spring Loaded Check Valve (Long Type)
Brand: Zhejiang Naibang Valve Co., Ltd.
SKU: 907431725

Zhejiang, ChinaZhejiang Naibang Valve Co., Ltd.

US$20.00

5-99 Pieces

US$10.00

100+ Pieces

Product profile

Customization

Available

Media

Oil Water Gas

Temperature

Ordinary Temperature

Model NO.

H71W

Material

Cast Steel

Connection Form

Wafer

Structure

Tilting

Pressure

Ordinary Pressure

Function

Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence

Sealing Form

Gland Packings Globe Valve

Flow Direction

Unidirection

Standard

ANSI

Application

Industrial Usage, Water Industrial Usage

Size

1/2" to 8"

Class

150lb to 800lb

Certificates

API 6D, CE, ISO9001

Delivery Detail

20~45 Days According to The Specific Quantities

Transport Package

Standard Export Wooden Case

Specification

API598, API6d, ANSI, Bs, DIN, JIS

Trademark

NAIBANG

Origin

China

HS Code

8481300000

Production Capacity

8000PCS/Year

Key features

Dual-Stage Closing Mechanism: Features rapid closing followed by adjustable slow closing to prevent water hammer.

Wide Material Selection: Available in WCB, CF8M, Duplex SS, Monel, Alloy 20, and various bronze alloys.

Corrosion Protection: Inside and outside epoxy coating ensures durability in corrosive environments.

Compact and Lightweight: Small size and light weight design facilitate easy installation and maintenance.

Customizable Specifications: Sizes from 1/2' to 8' and classes 150lb to 800lb are available for customization.

Strict Quality Inspection: 100% visual and function inspection for finished products before shipment.

Compliance with Standards: Meets API594, API598, ASME B16.34, and API6D standards for safety and quality.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceIn-stock Capacity

Zhejiang Naibang Valve Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 24 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤5.09h

AI-Powered supplier vetting

SummaryThe supplier demonstrates OEM and ODM capability, customization from samples and designs, five production lines, stated valve production capacity, in-stock service, and documented quality-control and complaint-handling procedures. It reports ISO9001:2015 certification and exports to Southeast Asia, the Middle East, and other countries or regions. However, it lacks a valid manufacturing-capacity contract with its associated subcontractor, overseas warehouses, overseas agents or branches, an overseas showroom, offline trade-show participation, and an available SDK. R&D evidence is mixed: design customization and ODM are available, but no new products were reported in the past year. Financial evidence is limited to year labels rather than assessable financial results, so credibility cannot be determined from the provided data.

Supplier typeThe supplier is presented as a manufacturing-oriented valve supplier with OEM service for well-known brands, in-stock capability, five production lines, and products used in power, water processing, construction, petrochemical, metallurgy, paper, and pharmaceutical applications. It also exports to Southeast Asia, the Middle East, and other countries or regions, but has no overseas agents or branches.

CertificationsThe supplier reports quality assurance in its quality-control processes and holds an ISO9001:2015 certificate along with unspecified additional certifications. The available evidence supports certification holding, although the additional certifications are not identified.

After-Sales capabilityThe supplier has a documented and followed customer-complaint procedure, written supplier-assessment procedures with records, and service proximity to Shanghai and Ningbo ports. However, it has no overseas warehouse, overseas showroom, overseas agents or branches, or stated overseas service coverage, limiting direct international service infrastructure.

Production capacityThe supplier reports five production lines, valve production quantities, in-stock capacity, a one-month peak-season fulfillment time, and a broad equipment base including CNC, lathes, grinding, drilling, cutting, painting, and sand-blasting equipment. However, it lacks a valid contract covering manufacturing capacity with its associated subcontractor, which is a documented operational deficiency.

Customization capabilityThe supplier explicitly offers customization from samples and from designs, and also provides ODM services. These statements directly support both sample-based and design-based customization capability.

Client casesThe supplier states that it provides OEM services for well-known brands and that its products have been used in domestic power stations, wastewater processing, urban construction, petrochemical, oil extraction, metallurgy, fertilizer, paper, and pharmaceutical applications. It also reports exports to many countries and regions, providing concrete application and market references, although no customer names are supplied.

Product Q&A

Q:What materials are available for this check valve?

Materials include WCB, WCC, WC6, WC9, CF8, CF8M, CF3, CF3M, F316, F304, F316L, F304L, CN7M, LCB, LCC, Duplex SS, Monel, Alloy 20, and various bronze alloys.

Q:Can the closing speed be adjusted?

Yes, the second slow closing speed is adjustable according to specific operating conditions to prevent water hammer.

Q:What standards does the valve comply with?

It complies with API594 (face to face), API598 (inspection and test), ASME B16.34, API6D, and ANSI B16.10/16.5/16.47.

Q:What is the minimum order quantity (MOQ)?

The minimum order quantity is 1 piece.

Q:What is the delivery time?

Delivery takes 20-45 days according to specific quantities. Peak season lead time is 1-3 months, while off-season is within 15 workdays to one month.