6. What materials are commonly used for gate valves?

Common materials include ductile iron body, EPDM resilient wedge, stainless steel stem, bronze or brass stem nut, and internal/external epoxy coating. Material options can be selected according to project requirements.

Flanged Resilient Seated Nrs Gate Valve with Indicator Post

Name: Flanged Resilient Seated Nrs Gate Valve with Indicator Post
Brand: Maitolead Pipeline Technology(Tianjin)Co., Ltd.
SKU: 2161138602

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

US$80.00

10 Pieces

Product specifications

SIZE

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Media

Water,Gas,Oil or Other

Temperature

0℃ to 80℃

Model NO.

Z45X-04

Type

Direct-acting

Material

Ductile Iron

Connection Form

Flange

Pressure

Pn16/Pn25

Actuator

Manual

Seal Surface

Wedge Gate Valve

Thread Position of Valve Rod

Inside Gate Valve

Usage

Regulation, Safety, Emptying, Drain, Temperature Control, Flow Control

Standard

DIN

Application

Industrial Usage, Water Industrial Usage, Household Usage

Valve Standard

En1171

Flange Standard

En1092-2

Certificate

FM/UL

Surface Treatment

Internal and External Epoxy Powder Coating

Transport Package

Wooden Case

Specification

DN50-DN300

Origin

China

HS Code

8481804090

Production Capacity

500000tons/Year

Key features

Ductile iron body with strong mechanical strength

FM/UL approved for fire protection pipeline systems

EPDM resilient wedge for reliable sealing

internal and external epoxy coating for corrosion resistance

NRS and OS&Y gate valve types available

Flanged, grooved, or mechanical joint ends available

PN16 / 300 PSI / project-required pressure ratings available

Suitable for fire protection, water supply, HVAC and irrigation

Pressure tested before shipment

Datasheets, certificates and inspection documents available

Company profile

Maitolead Pipeline Technology(Tianjin)Co., Ltd.

Tianjin, China

Business Type: Trading Company, Group CorporationAverage Response Time: ≤2.60h

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:1. What is a gate valve used for?

A gate valve is mainly used to open or close the flow in a pipeline system. It is widely used in fire protection, water supply, HVAC, irrigation, and industrial piping systems.

Q:2. Can a gate valve be used for flow control?

Gate valves are mainly designed for full open or full close service. They are not recommended for long-term throttling or flow regulation, because partial opening may damage the wedge and sealing surface.

Q:3. What is a resilient seated gate valve?

A resilient seated gate valve uses an EPDM or NBR rubber-covered wedge to provide tight sealing. It is commonly used for water supply, fire protection, HVAC, and irrigation pipeline systems.

Q:4. Do you supply FM/UL approved gate valves?

Yes. We can supply FM/UL approved gate valves for fire protection systems. Available options include NRS gate valve, OS&Y gate valve, flanged gate valve, grooved gate valve, and other project-required types.

Q:5. What is the difference between NRS and OS&Y gate valves?

NRS means non-rising stem. The stem does not move up and down during operation, so it is suitable for limited-space installation. OS&Y means outside screw and yoke. The stem rises when the valve opens, making the open/close position easy to see. It is commonly used in fire protection systems.