What is the lead time for production?

The average lead time is within 15 workdays for both peak and off-peak seasons.

What payment terms do you accept?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

Does the valve require external power to operate?

No, it operates automatically with fluid flow and requires no external power.

Casting Steel Butterfly Buffer Check Valve

Name: Casting Steel Butterfly Buffer Check Valve
Brand: Shanghai Sanwei Valve Manufacturing Co.,Ltd.
SKU: 2201390465

Zhejiang, ChinaShanghai Sanwei Valve Manufacturing Co.,Ltd.

US$18.00-180.00

1 Piece

Sample price:US$18.00/piece.Request sample

Product profile

Media

Water,Gas,Oil etc

Temperature

Ordinary Temperature

Material

Cast Steel

Model NO.

HH47

Connection Form

Flange

Structure

Butterfly

Pressure

Ordinary Temperature

Function

Backflow Prevention

Sealing Form

Flow Direction

Unidirection

Standard

ANSI

Application

Industrial Usage, Water Industrial Usage, Household Usage

Size

DN40-DN300

Operation

Automatic

MOQ

Customized

OEM

Transport Package

Wooden Case

Trademark

SWF VALVE

Origin

China

HS Code

8481804090

Key features

Effective Water Hammer Elimination: Built-in buffering device reduces water hammer impact to protect pipes and equipment.

Compact and Easy Installation: Small external dimensions allow flexible horizontal or vertical installation.

Low Flow Resistance Design: Full-bore design ensures minimal fluid resistance for significant energy savings.

Reliable Sealing Performance: Rubber or metal seals prevent leakage and ensure long service life.

Automatic Operation: Valve opens and closes automatically with fluid flow without external power.

Wide Size Range: Available in sizes from DN40 to DN400 (1.1/2' to 56').

OEM Customization Available: Supports customization from samples, designs, and flexible minor modifications.

ISO Certified Manufacturer: Factory certified with ISO9001, ISO45001, and ISO14001 standards.

Company profile

Quality AssuranceManagement CertificationCooperated with Fortune 500Fast Delivery

Shanghai Sanwei Valve Manufacturing Co.,Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 22 years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤8.38h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier appears to be a technology, machinery, components, and casting-related manufacturer with three production lines and a broad machining equipment base. It offers extensive customization and has documented finished-product inspection procedures, quality assurance, corrective-action, and complaint-handling processes. ISO9001:2015, ISO45001:2018, and ISO14001 certificates are reported, and the supplier states that it has worked with Fortune 500 companies. However, the information also identifies weaknesses: no valid manufacturing-capacity contract with related subcontractors, no overseas warehouse, showroom, agents, or branches, no offline trade-show participation, no SDK availability, and no standard outsourcing procedure or continuous batch quantity reconciliation. Financial information is incomplete and inconsistent across the provided records, so financial credibility cannot be determined.

Supplier typeThe stated business scope covers technology development and transfer, pneumatic and electric tools, pneumatic and hydraulic machinery and components, ferrous metal casting, seals, and gears. This indicates a technical industrial equipment and components supplier with manufacturing-related activities.

CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, and ISO14001 management-system certificates, quality assurance in quality control, and a factory environmental impact assessment report. Product compliance certification is listed only as “Others,” so the specific product standard is not identified.

After-Sales capabilityThe supplier has documented corrective and preventive action and customer-complaint procedures with follow-up records, and it offers in-stock service capability. However, it has no overseas warehouse, showroom, agents, branches, or overseas service countries, limiting demonstrated local overseas support.

Production capacityThe supplier lists extensive machining, drilling, painting, blasting, and hydraulic testing equipment, reports three production lines, and has in-stock capacity. Production-control weaknesses include no valid manufacturing-capacity contract with related subcontractors, no continuous quantity reconciliation for each batch, and no standard outsourcing procedure.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, minor customization, and flexible customization. Its listed manufacturing equipment also supports a range of machining and finishing activities.

Client casesThe supplier states that it has collaborated with Fortune 500 companies and reports a repeat-buyer preference of 50%–80%. No customer names, project details, order scope, or independently verifiable case information are provided.