Drainage Project

Huadu Valve – Dedicated Valves for Drainage Project

Drainage projects cover urban rainwater and sewage discharge, municipal pipe networks, industrial wastewater treatment, flood control and drainage, and water conservancy irrigation. They face complex working conditions such as large flow fluctuations, high sediment content, mixed impurities, alternating dry and wet environments, and long-term buried operation. Ordinary "one-size-fits-all" drainage valves are prone to blockage, leakage and difficult maintenance, leading to pipeline problems and project losses. Unlike general manufacturers that simply apply industrial valves to drainage scenarios, Huadu Valve develops customized valves for drainage segments, solving core pain points and providing reliable fluid control support.

Our products cover the whole drainage process, adapting to urban sewage, rainwater, industrial wastewater and floodwater. They operate stably under harsh conditions, reducing maintenance frequency and operation risks, and meeting the efficient, stable and environmental protection needs of drainage projects.

Core Product Range

1. Anti-clogging Sewage Butterfly Valve for Municipal Drainage

This anti-clogging sewage butterfly valve is made for urban rainwater and sewage pipe networks. It comes with a full-port streamlined flow channel—no dead corners at all, so impurities won’t pile up. We use ductile iron for the valve plate, paired with EPDM rubber seals, so it holds up well against wear and corrosion. There’s a built-in self-cleaning scraper too, which takes care of blockage problems for good. It’s light, easy to install either horizontally or vertically, works well in municipal drainage networks, and lasts more than 15 years.

2. Corrosion-Resistant Gate Valve for Industrial Wastewater Drainage

We make this corrosion-resistant gate valve specifically for industrial wastewater—like the kind from chemical, printing and dyeing, or food processing plants. It uses FRP or 316L stainless steel for the valve body, strong enough to stand up to corrosive stuff in wastewater (annual corrosion rate less than 0.02mm). The flexible seal keeps it completely leak-free, and the rust-proof valve stem won’t get stuck even after being submerged for a long time. It’s perfect for wastewater treatment plants, runs for 8 years without needing maintenance, and helps businesses cut down on costs.

3. Large-Flow Flood Control Drainage Check Valve

This large-flow check valve is for flood control, river improvement, and releasing water from reservoirs. It has a large-diameter full-port design (flow coefficient ≥0.95), so floodwater can get out fast—helping keep waterlogging damage as low as possible. We added a hydraulic buffer to reduce water hammer damage; no more wear on pipes or valves from sudden surges in water pressure. The valve plate is high-strength cast steel, tough enough to handle floodwater that’s full of sediment rushing past it. There’s also an anti-backflow device to stop floodwater from flowing back and making things worse. It’s used a lot in flood control systems, and it stays working steady even when conditions get really bad.

4. Buried Anti-Corrosion Ball Valve for Drainage Pipe Network

Developed for long-term buried pipe networks, it has a fully enclosed anti-corrosion structure (epoxy coal tar coating + cathodic protection) to resist soil and microbial corrosion. Equipped with an underground operation well for maintenance without digging, it adapts to pipe network pressure fluctuations and is suitable for urban buried drainage and irrigation networks.

Differentiated Core Strengths

1. Drainage-Specific Anti-Clogging Design (Core Differentiation)

Unlike general valves focusing only on sealing, we adopt "full-port flow channel + self-cleaning structure + anti-clogging valve seat" to solve blockage. Targeted designs for different impurities avoid frequent shutdowns, fitting actual drainage conditions.

2. Multi-Scenario Corrosion-Resistant Material Matching

We don’t use a one-size-fits-all material for every drainage scenario. Instead, we match materials based on what kind of drainage medium you’re dealing with and where the valve will be used. This way, we make sure the valve resists corrosion like it should, and at the same time, we help you keep overall costs down. Compared to regular drainage valves, ours last 2 to 3 times longer.

3. Specialized Optimization for Buried Scenarios

For valves that go underground, we’ve made special improvements. They’re fully sealed to resist corrosion, and we put in an underground operation well—so you don’t have to dig up the whole area just to do maintenance. We also add monitoring sensors, so you can get alerts about any problems from afar. That saves you money on maintenance and keeps you from dealing with the trouble of on-site repairs all the time.

4. Large-Flow & Anti-Water Hammer Integrated Design

Integrating large-flow design and hydraulic buffer structure, it ensures rapid flood discharge (30% higher flow than ordinary valves) and eliminates water hammer, solving the defect of ordinary valves.

5. Segmented Customization Service for Drainage Projects

For drainage project customization, we don’t just offer standard options. Our technical team works one-on-one with you, figuring out exactly what your site needs. Whether you need a custom flow channel, specific materials, or non-standard sizes, we can make it happen. We also send our people to your site to help with installation, and we check in after sales to make sure the valves work perfectly for your setup—no mismatches, no headaches.

We’re all about fixing the real problems you face with drainage projects. Our valves are tough, won’t break the bank, and cities and factories around the world trust them. They’ll help you spend less, get more done, and keep your drainage systems running smoothly and safely—no unnecessary downtime.