Wafer Type Butterfly Valve

The Zhongguan Valve wafer type butterfly valve features a compact, space-saving design, making it the premier choice for medium and low-pressure pipeline systems. Engineered with a unique clamping structure, it installs seamlessly between flanges without the need for additional bolt holes, significantly reducing installation time and costs.

Utilizing high-strength materials and advanced sealing technology, our butterfly valves guarantee zero-leakage performance, low pressure drop, and long-term stable fluid control across water treatment, petrochemical, power, and heating industries.

Technical Specifications & Material Selection

To meet diverse global industrial standards, we offer a robust range of material configurations tailored to your specific working conditions:

Why Choose Zhongguan Valve?

1. OEM & ODM Customization Services (with Certification)

With over 19 years of deep-rooted expertise and two specialized manufacturing bases in Tianjin (Water Valves) and Wenzhou (Industrial Valves), we provide full-scale OEM and ODM services.

Tailored Engineering: Custom dimensions, pressure ratings, logotypes, and specific paint finishes (e.g., epoxy coating color customization).

International Standards: Our valves are designed, manufactured, and tested to meet global benchmarks including API, ANSI, DIN, JIS, and GB.

Certified Quality: All products come with full material traceability, pressure test certifications, and conform to ISO 9001 standards.

Caption: Our state-of-the-art testing facility ensuring every valve passes strict pressure tests before dispatch.

2. Global Partnerships & Success Cases

Zhongguan Valve has established sustainable, high-trust partnerships with EPC contractors, municipal water authorities, and industrial distributors across Europe, Southeast Asia, the Middle East, and the Americas. By successfully bridging the Northern China cast iron water valve supply chain and the Southern China industrial steel valve supply chain, we provide a seamless, one-stop sourcing experience.

Caption: Zhongguan wafer butterfly valves operating reliably in a large-scale overseas municipal water treatment plant.

3. Production Excellence & Technical Power

Our Wenzhou and Tianjin bases house complete, advanced production lines, eliminating middle-man costs and ensuring unbeatable cost-effectiveness:

Advanced Equipment: Equipped with professional valve pressure testing machines, precision valve seat assembly machinery, shaft sleeve installation gear, and automatic laser marking systems.

Expert Team: Backed by practitioners with 20+ years of technical experience, ensuring rapid solution design and robust quality control from casting to final assembly.

Packaging, Shipping & After-Sales Service

We understand that safe delivery and continuous support are vital to your business continuity.

Secure Packaging & Logistics

Standard Export Packing: Valves are individually wrapped in protective bubble bags/plastic film, fitted with end caps, and securely packed into heavy-duty seaworthy wooden cases (fumigation-free) to prevent any transit damage.

Flexible Shipping: Located near major shipping hubs (Ningbo/Shanghai ports), we offer flexible FOB, CIF, or CFR terms with real-time tracking support.

Professional After-Sales Guarantee

12-18 Month Warranty: We offer a standard 12-month operational warranty (up to 18 months from shipment date) against manufacturing defects.

24/7 Technical Support: Our engineering team provides remote installation guidance, maintenance training, and troubleshooting to ensure optimal pipeline performance.

Quick-Response Spare Parts: Rapid dispatch of replacement seats, discs, or actuators to minimize your system downtime.

Frequently Asked Questions (FAQ)

Q1: What is the main difference between a Wafer butterfly valve and a Lug butterfly valve?

The primary difference lies in how they are installed and handled in the pipeline:

Wafer Type: Installed by clamping the valve between two pipe flanges using long bolts that pass through the entire valve body. It is more compact, lightweight, and cost-effective, but cannot be used for dead-end service (isolating one side of the pipe).

Lug Type: Has threaded metal inserts (lugs) surrounding the valve body. It allows bolts to be threaded directly into the lugs from both sides, enabling the downstream piping to be disconnected while keeping the upstream side under pressure.

Q2: What is the leakage standard for Zhongguan wafer butterfly valves?

Our soft-sealed butterfly valves (EPDM/NBR/PTFE seats) are designed and tested to achieve Zero Leakage (Bubble-tight shutoff), conforming to API 598 or EN 12266-1 Rate A standards. For metal-to-metal seated valves, we adhere to strict international permissible leakage rates.

Q3: How do I select the right seat material (EPDM vs. NBR vs. PTFE)?

Material selection depends entirely on your fluid medium and operating temperature:

EPDM: Ideal for water, hot water, waste water, and low-concentration acids. Temperature range: $-20^\circ\text{C}$ to $+120^\circ\text{C}$.

NBR: Best for oils, hydrocarbons, and air. Temperature range: $-10^\circ\text{C}$ to $+80^\circ\text{C}$.

PTFE (Teflon): Superior resistance to strong chemicals, acids, alkalis, and food/pharmaceutical applications. Temperature range: $-30^\circ\text{C}$ to $+150^\circ\text{C}$.

Q4: Do you accept OEM/ODM orders, and what is your Minimum Order Quantity (MOQ)?

Yes, we fully support OEM and ODM customization (custom logos, colors, tagplates, and materials).

For standard sizes (DN40 - DN300) in common materials, we offer flexible MOQs to support initial trial orders.

For large sizes (up to DN1600) or special alloys, the MOQ is typically 1 piece. Please contact our sales team with your specific requirements for a tailored quote.

Q5: What quality control tests do you perform before shipment?

Every single valve manufactured by Zhongguan undergoes a 100% dual-pressure test before leaving our factory. This includes:

Shell Hydrostatic Test: Verifying the structural integrity of the valve body.

Seat Leakage Test: Ensuring zero leakage at maximum operating pressures.

We can provide Mill Test Certificates (MTC) and pressure test reports with every shipment.

Q6: What is your standard production lead time?

In-stock items / Standard components: 7–10 days.

Batch production (Standard orders): 15–25 days.

Customized or Large-scale orders (DN600+): 30–45 days, depending on the complexity and casting schedule.