What is the delivery time?

The standard delivery time is 1 to 2 weeks.

What testing standards do your products meet?

All products undergo 100% pressure and helium leak detection tests before delivery.

What payment methods do you accept?

We accept T/T, Western Union, PayPal, credit cards, and Trade Assurance on Made in China.

4" Spring Loaded Check Valve

Name: OEM ODM One Way Port Sizes 1/8"~3/4" Spring Loaded Check Valve
Brand: Hunan Wofly Technology Co., Limited
SKU: 2093963952

Hunan, ChinaHunan Wofly Technology Co., Limited

US$22.00

1-399 Pieces

US$14.00

400+ Pieces

Product profile

Customization

Available

Media

Gas

Temperature

Ordinary Temperature

Model NO.

SS-CH-6L-FNS4

Material

Stainless Steel

Connection Form

Thread

Structure

Spring Loaded

Pressure

High Pressure

Function

Prevent Fluid Backflow

Sealing Form

O-Ring Seal

Flow Direction

One Way

Standard

ANSI

Application

Industrial Usage, Water Industrial Usage

Product Name

Check Valve

Max.Working Pressure

3000psi(206bar)

Opening Pressure

10psi

Application Media

Water,Gas

Surface Roughness

Ep-Grade Ra0.13um,Ba-Grade Ra0.25um

Power

Hydraulic

Warranty

1 Year

Customized Surpport

OEM,ODM

Body Material

SS316L

Sealing Material

FKM

Port Type Options

M NPT/F NPT/Ferrules/VCR/BSPP/BSPT

Port Type

Female NPT Thread X Female NPT Thread

Transport Package

Carton Box

Specification

Port sizes: 1/8", 1/4", 1/2", 3/8", 3/4"

Trademark

AFKLOK

Origin

China

HS Code

8481300000

Production Capacity

40000pieces Per Year

Key features

High Pressure Capability: Withstands up to 3000 psi (206 bar) for heavy-duty industrial applications.

Corrosion Resistant Material: Constructed from SS316L stainless steel for superior durability and longevity.

Adjustable Opening Pressure: Springs available with fixed opening pressures ranging from 1 to 25 psig.

Versatile Connection Options: Supports VCR, compression, female/male NPT, ferrules, BSPP, and BSPT connections.

OEM and ODM Support: Customizable designs, materials, sizes, and logo branding available.

Ultra-High Purity Finish: EP-grade (Ra 0.13um) and BA-grade (Ra 0.25um) surface finishes for gas purity.

Cleanroom Assembly: Assembled in Class 100 and 1000 cleanrooms with rigorous helium leak testing.

Comprehensive Warranty: Backed by a 1-year warranty covering mechanical defects and parts.

Company profile

Cooperated with Fortune 500Patents AwardedR&D CapabilitiesStandardized quality control

Hunan Wofly Technology Co., Limited

Hunan, 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: 3 Years CertifiedNearest Port: Shenzhen Port,Guangzhou Port,Chenzhou PortAverage Response Time: ≤1.51h

AI-Powered supplier vetting

SummaryThe supplier is a limited company with 47 employees and offers valves, fittings, pressure regulators, and related industrial products. It reports manufacturing-related capabilities supported by CNC and vision-measuring equipment, valid contracts with associated subcontractors, inventory capability, and documented inspection and service procedures. The supplier provides broad customization and ODM services, has introduced new products within the past year, and provides OEM services for recognized brands. However, no certification information, customer case details, or explicit after-sales service scope is provided. Financial information is identified only by years, without substantive financial metrics, so financial credibility cannot be assessed. The supplier has no overseas warehouse or showroom and no available SDK.

After-Sales capabilityThe supplier has written procedures and records for service assessment, corrective and preventive actions, and customer complaint handling, indicating a documented service-management process. However, no specific after-sales services, response standards, or support coverage are stated.

R&D capabilityThe supplier reports new products within the past year, provides ODM services, and conducts research and development in emerging energy, Internet of Things, valve, and automatic-control technologies. It has no available SDK, which limits evidence of software-development integration capability but does not negate the stated product R&D capability.

Production capacityProduction capability is supported by CNC and vision-measuring equipment, uniformly followed finished-product inspection instructions, valid manufacturing contracts with associated subcontractors, and inventory capability. The supplier also reports 47 employees, but overall production capacity and output volume are not stated.

Customization capabilityThe supplier explicitly supports customization from samples and designs, minor and full customization, and flexible customization. It also reports ODM services and OEM services for recognized brands, providing strong direct evidence of customization capability.