Concealed Rod Elastic Seat Sealing Valve
Concealed Rod Elastic Seat Sealing Valve

Concealed Rod Elastic Seat Sealing Valve

The gate valve produced by our factory uses the overall rubber coating of the gate valve to produce deformation compensation effect to achieve a good sealing effect, overcoming the phenomenon of poor sealing of ordinary gate valves, water leakage and rust. It is installed on various pipelines and used as a two-way closed circuit. it is widely used in water supply, fire protection, air conditioning, water treatment, municipal administration, shipbuilding, electricity, construction, food and other pipeline engineering as a control fluid operation.

Product Features

1. Flats valve seat: the bottom part adopts the same flats valve seat design as the water pipe, which does not accumulate dirt and makes the sealing more reliable.

2. Overall rubber coating: the gate plate adopts integral rubber coating, which has good coverage performance and precise dimensions to ensure reliable sealing and longevity.

3. Lightweight: the valve plate is made of iron, which is lightweight and easy to install and repair.

4. The overall rubber ring seal: the valve stem is sealed with a "o" ring. it has been changed from the previous three "o" type seals to a single overall rubber ring. it is equipped with a copper nut to press it tightly, which is convenient and fast. the tightness is adjustable and the rubber ring is easy to replace.

5. Corrosion resistance: the inner cavity is coated with non-toxic epoxy resin to prevent corrosion and rust, not only can be used for drinking, but also for sewage systems.

Technical Specifications

Product Components Materials


Serial number Main part Material
1 Valve body QT450
2 Gate Qt450, nitrile rubber
3 Stem 304, 2cr13, copper
4 Valve cover QT450
5 Sealing ring Nitrile rubber
6 Hand wheel QT450
7 Pressure cover QT450
8 T-nut Qt450, copper
9 Stop push pad A3, copper
10 Fasteners Standard parts


Product  Dimensions


Nominal diameter(dn)50 65 80 100 125 150 200 250 300 350 400 450 500 600 
MediumValve length(mm)178 190 203 229 254 267 292 330 356 381 406 432 457 508 
Valve height(mm)275 290 335 375 445 500 675 775 875 




Heavy dutyValve length(mm)178 190 203 229 254 267 292 330 356 381 406 432 457 508 
Valve height(mm)300 335 367 415 500 555 680 835 950 1060 1170 1280 1390 1500 
Test pressure
(mpa)
Shell1.5-2.4
Sealed1.1-1.76
Nominal pressure(mpa)1.1-1.6
Applicable temperature0-80℃
Applicable mediumWater and weakly corrosive fluids


FAQ
Do your products and services cover overseas markets? Can they meet the equirements of international projects?

As a global supply chain service provider with operations in over 30 countries and regions, our comprehensive product range—encompassing pipes, fittings, valves, and fire-fighting equipment—has obtained ISO international quality certification and complies with multiple regional standards, including CE, UL, and SASO. These products have been successfully implemented in various international scenarios, such as infrastructure projects in Southeast Asia, commercial complexes in the Middle East, and fire renovation projects in Eastern Europe. For both regular procurement and cross-border customization, we offer an integrated solution that spans product selection, customs clearance, and logistics management.  

When overseas customers customize products with special specifications, do you support alignment with international standards? What are the differences in the process?

Absolutely. For overseas customization requests, our engineering team collaborates directly with international blueprints and technical specifications to provide multi-standard compatible designs, including wall thickness conversion and pressure grade adaptation. Additionally, we provide:  

- Third-party testing reports for pre-production samples  

- Packaging labels compliant with the destination country's regulations  

- Bilingual technical documentation and compliance certificates to ensure smooth local acceptance

How is the quality of overseas orders ensured? Can you provide local certification documents?

We enforce a global quality control system that surpasses national standards. Each batch undergoes rigorous testing, including raw material composition analysis, pressure burst tests, and salt spray corrosion resistance evaluations, accompanied by bilingual (Chinese-English) quality inspection reports. Based on project location requirements, we can furnish free certification documents for target markets, such as CE (European Union), UL (United States), and BIS (India). Furthermore, we support on-site inspections and remote video audits to ensure full transparency in the quality control process. 

What is the delivery cycle and logistics plan for overseas orders?

The standard delivery cycle for overseas orders ranges from 25 to 45 working days. We offer diverse shipping options, including full container loads, less-than-container loads, and air freight express services. Our international logistics network covers major ports and airports worldwide. To facilitate swift customs clearance, we provide essential international certification documents, such as certificates of origin and commercial invoices. Leveraging our bonded warehouses in Hong Kong and Shenzhen, select Southeast Asian orders can be expedited with delivery within 7 to 10 days.

How is overseas after-sales support implemented? Does the warranty period include international shipping fees for returns and exchanges?

We deliver cross-border after-sales support through a 7x12-hour customer service model (email/WhatsApp/phone) with a guaranteed response time of two hours and a resolution proposal within 24 hours. For warranty-related quality issues, we cover basic shipping costs from Chinese ports or airports to the destination port. Additionally, we provide remote technical guidance, bilingual materials, and coordinate online support with engineers when necessary.

Can you offer customized solutions for non-standard pipe/valve sizes or fire system designs?

Absolutely. As a one-stop supplier, we specialize in customizing products to match your unique project needs:

Customizable parameters: Pipe diameter (DN15-DN2000), valve pressure rating (PN10-PN400), material (304/316 stainless steel, carbon steel, galvanized steel);

Fire system customization: We collaborate with your engineers to design integrated systems (e.g., high-rise building fire pipelines + matching valves + sprinklers) and provide 2D/3D drawings for confirmation before production.

Sample production is available for testing prior to mass orders.

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