What's the package and how do you ship the goods?

Usually is wood pallet as your request. We usually ship by sea. Airline shipping is also optional.

How to deal with after sales?

Warranty time: 12 months from the shipment; and we will be responsible for all the quality problems. Quality control: High quality mold./Raw materials control/Production process quality control/Final inspection/Water testing (no leaking).

What is the average lead time?

For samples, the delivery time is about 2-5 days. For mass production, the lead time is about 15-60 days after receiving the deposit payment. We can provide production schedule and related photos every two weeks. The lead times become effective when (1) we have received your deposit, and (2) we have your final approval for your products. If our lead times do not work with your deadline, please go over your requirements with your sale. In all cases we will try to accommodate our production plan t

4 Inch Pn16 Cast Iron Spring Non Return Wafer Check Valve for Water

Name: 4 Inch Pn16 Cast Iron Spring Non Return Wafer Check Valve for Water
Brand: Maitolead Pipeline Technology(Tianjin)Co., Ltd.
SKU: 1987081411

Tianjin, ChinaMaitolead Pipeline Technology(Tianjin)Co., Ltd.

US$15.00-35.00

10 Pieces

Product specifications

Port size

Sample price:US$0.01/piece.Request sample

Product profile

Customization

Available

Media

Water

Driving Mode

Manual

Model NO.

DH77X

Connection Form

Wafer

Structure

Butterfly Valves

Seal Form

Force Sealed

Valve Stem

Extended

Work Pressure

Mid-Pressure (2.5mpa< Pn <6.4mpa)

Working Temperature

Normal Temperature (-40°C<T<120°C)

Material of Seal Surface

Metal Hard Sealed

Valve Body

Forge Welding

Application

Industrial Usage, Water Industrial Usage, Household Usage

Customized Support

ODM, OEM, Obm

Warranty

3 Years

Color

Customized Color

Transport Package

Wooden Box

Specification

2"~12"

Trademark

Maitolead

Origin

Hebei, China

HS Code

84818090

Production Capacity

50000tons/Year

Key features

Dual Plate Design: Provides faster response, lower pressure loss, and greater operational stability compared to swing check valves.

Spring Assisted Closure: Valve plates close instantly under reverse pressure with the assistance of torsion springs.

Customized Color Support: Color options are available for customization to meet specific project requirements.

ODM and OEM Services: Full support for original design manufacturing and original equipment manufacturing with R&D team.

Comprehensive Certifications: FM, UL, CE, DNV, LR, CCS, BV, and ABS certified for global market compliance.

Wide Application Range: Suitable for water supply, HVAC, fire protection, oil and gas, and industrial process pipelines.

Durable Material Construction: Body made of ductile iron with SS304/SS431 stem and EPDM/NBR sealing for longevity.

Flexible Delivery Terms: Supports EXW, FOB, CIF terms and offers sea or air shipping options.

Company profile

Maitolead Pipeline Technology(Tianjin)Co., Ltd.

Tianjin, China

Business Type: Trading Company, Group CorporationAverage Response Time: ≤4.09h

AI-Powered supplier vetting

SummaryMaitolead Pipeline Technology (Tianjin) Co., Ltd. is identified as a Chinese trading company/group corporation focused on industrial equipment and components, including multiple pipe fitting, flange, and valve categories. It has self-operated import and export rights, reports that exports comprise 90% of total sales, and is located in Tianjin with service proximity to Tianjin Port. Its stated service infrastructure is limited: no overseas showroom, agents, branches, or reported offline trade-show participation. R&D resources are minimal, with one R&D engineer and no new products launched in the past year; ODM, SDK, and well-known-brand OEM services are unavailable. Customization from samples is offered. Complaint handling, corrective/preventive action, and approved-supplier-list procedures are not documented in the provided data. Certification, production facilities, customer cases, raw-material traceability, and quality assurance remain unverified.

Supplier typeThe supplier is explicitly described as a trading company and group corporation, with a limited-company ownership structure and a business focus on industrial equipment and components. Its listed offerings cover pipe fittings, flanges, and valves, while the registered and physical addresses are both in Tianjin.

After-Sales capabilityThe supplier has no overseas showroom, overseas agents or branches, and no reported offline trade-show participation. It also has no written procedures or records for customer complaints or corrective and preventive actions, indicating documented after-sales processes are not demonstrated.

R&D capabilityThe supplier reports one R&D engineer and no new products launched in the past year. It also does not provide ODM services, SDK availability, or OEM services for popular brands, which indicates limited demonstrated innovation capability.

Customization capabilityThe supplier explicitly states that it provides customization from samples. This is direct evidence of a sample-based customization service, although no broader engineering or design capacity is specified.

Product Q&A

Q:Can I have a sample order for valve?

Definitely Yes. We welcome sample order to test and check quality. Mixed samples are acceptable.

Q:Can you OEM or ODM?

Yes, we have a great research & development team. The products can be made according to your request.

Q:Can you provide the relevant documentation and certificate?

Yes, we can provide you with the documentation and certificate you need, IS09001:2000 international quality system certification, (CE) certification of the European Community, Det Norske Veritas (DNV) factory certification, Lloyd's Register (LR) factory certification, China Classification Society (CCS) quality system certification and the FM and UL certification of the US, Bureau Veritas(BV), American Bureau of Shipping(ABS) etc. Of course we can also provide you the test Report; Certificate of

Q:Can you do the design for us?

Yes. Please send us high resolution images, your logo and other materials needed. We will send you finished files for confirmation.

Q:What is your terms of delivery?

We accept EXW, FOB, CIF, etc. You can choose the one which is the most convenient for you.