AeroForm Series Stainless Steel Wafer Type Butterfly Valve - Worm Gear

1.5in~48in; PN6~PN20 (Class125~150)

Product Advantages

icon Surface Integrity: Our castings are guaranteed to be free from surface porosity, shrinkage, or unauthorized weld repairs, ensuring maximum material strength and pressure-holding capability.

icon Future-Proof Automation Ready: ISO 5211 actuator pads enable future pneumatic/electric upgrades without valve replacement

icon Innovative & Compact Design: In a market of conventional designs, its unique and modern appearance immediately sets it apart.

Standards and Certifications

Design and Manufacture: ASME B16.34; ASME VIII; API 609

Leakage Class: API 598 (Bi-directional Zero Leakage)

Side Flange Standards: ANSI 125LB/ 150LB; ASME; AS-D/E; BS; DIN; EN PN6/ PN10/ PN16; GB; GOST; HG/T; JIS 5K/ 10K

Top Flange (Actuator Mounting) : ISO 5211; GB 90°

Face-to-Face Dimension: ISO 5752; MSS SP-68; ASME B16.10; EN 558-1; API 609

Testing Standards: API 598; EN 12266-1; ISO 5208; BS 6755-1

Certifications: ISO 9001; CE; BV; API 609; API 598; EAC; SIL3；

Technical description

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Q&A

Specification of the Valve

Type of Connection	Wafer
Actuation	Worm Gear
Size	DN40~DN1200 (1.5in~48in )
Pressure	PN6~PN20 (Class 125/150)
Testing Pressure	Shell: 1.5 x Rated Pressure; Seat: 1.1 x Rated Pressure (acc. to API 598)
Medium	Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc.
Medium Temperature	-25~180℃ Depends on seat material

Material of the Valve

Body	Stainless Steel: CF8 (304), CF8M (316), CF3 (304L), CF3M (316L), JS1030, 1.4406 Duplex Stainless Steel: 2205, 2507 Austenitic Stainless Steel: 1.4529, CN7M (Alloy 20)
Disc	Cast Iron: DI, CI Stainless Steel: CF8 (304), CF8M (316), CF3 (304L), CF3M (316L), CD3MN (Duplex 2205), CE3MN (Super Duplex 2507), 1.4529 (926) Aluminum Bronze: C95400, C95800 Nickel Alloy: CW6MC (Hastelloy C-276 eq.)
Shaft	Carbon Steel: 45# Stainless Steel: SS410, SS416, SS420; SS304, SS316, SS304L, SS316L; 17-4PH (SS630); Duplex 2205, Super Duplex 2507, 1.4529 Nickel Alloy: Monel K500, Hastelloy C-276
Soft Seat	Elastomers: EPDM, HTEPDM, NBR (Nitrile Rubber / Buna-N), SIL (VMQ), FKM (VITON™), HYPALON™ Plastics: PTFE, PFA, UHMWPE

High-Density Casting: Zero Porosity Guaranteed

Our butterfly valve stainless bodies are produced from a high-density casting process. This ensures a solid, non-porous structure, completely free from sand holes and other casting defects. The result is superior strength and maximum durability.

Learn More About Our Process

PRECISION CONTROL, BUILT TO LAST

The AeroForm Series with worm gear operation combines robust material science with mechanical advantage. It's engineered for precise manual control and reliable shutoff in demanding applications, especially for large-diameter pipelines.

Source Factory · Flexible Customization

Our in-house foundry allows us to control quality from the raw material. This means you can freely combine body, disc, stem, and seat materials to achieve the best cost-performance for your specific operating conditions, without paying for over-engineering.

Integrated Casting · Superior Performance

From mold development to precision casting, we have complete control over the entire process. This ensures every valve possesses exceptional mechanical strength and dimensional accuracy, laying a solid foundation for long-term stability under high pressure and frequent operation.

Reliable Sealing · Standard, Not an Extra

All our soft-seated butterfly valves achieve bi-directional bubble-tight zero leakage (ISO 5208 Rate A) as a standard feature. In critical isolation points like pre-treatment and product water lines, superior sealing is our default, providing you with dependable protection at no extra cost.

ROBUST CONTROL IN DEMANDING APPLICATIONS

The AeroForm worm gear valve delivers mechanical advantage and precision for manual flow control. It's the trusted choice for industries where reliability and easy operation of large-diameter valves are paramount.

Water & Wastewater Treatment

In large-scale municipal water plants, controlling flow in main distribution lines requires precision. The self-locking nature of our Worm Gear Operated Butterfly Valve ensures stable positioning for throttling and reliable isolation for maintenance.

Chemical Processing

For handling corrosive chemicals in large batch reactors and transfer lines, our Stainless Steel Manual Butterfly Valve with a gear operator provides the necessary material integrity and the mechanical advantage for safe, easy operation under pressure.

Marine & Shipbuilding

Onboard ships, space is tight and reliability is critical. The compact design and robust housing of the Butterfly Valve Worm Gear Actuator make it ideal for ballast water control, cooling systems, and bilge applications, resisting corrosion in saline environments.

Power Generation

In power plants, a large 10 Wafer Butterfly Valve is essential for managing cooling water intake and circulation lines. The gear operator allows for safe, controlled manual actuation of these critical, large-diameter pipes.

Pulp & Paper Mills

Handling process water, white water, and mild chemical slurries, our Gear Type Butterfly Valve excels. Its durable construction and precise control are essential for maintaining stable flow rates throughout the demanding paper manufacturing process.

Mining Operations

In dewatering and slurry transport applications, an 8 Wafer Butterfly Valve with a gear operator provides reliable shutoff and throttling. The robust mechanism withstands the harsh, high-vibration environment typical of mining sites.

HVAC & District Cooling

For large commercial buildings and district energy systems, a Butterfly Valve With Worm Gear is used to balance and isolate main chilled water lines. It allows maintenance crews to perform precise adjustments and secure shutoffs with ease.

Oil & Gas Utilities

Within tank farms and refineries, a Butterfly Valve Wafer Type Class 150 is a standard for utility lines like firewater systems, cooling water, and nitrogen feeds. The gear operator ensures dependable manual control in safety-critical situations.

Food & Beverage Bulk Processing

In facilities handling bulk liquids like syrups, oils, or juices, a sanitary 6 Wafer Butterfly Valve with a gear operator is used on large tank outlets and transfer headers, providing smooth, controllable flow to filling lines.

DESIGNED FOR PRECISION & EASE IN TOUGH CONDITIONS

Large Diameter Pipelines

The gear operator provides significant mechanical advantage, allowing a single operator to easily open or close large valves without strain. This makes our butterfly valve with worm gear ideal for mains, headers, and any pipe size above DN200 (8").

Throttling & Flow Balancing

Unlike lever handles, the handwheel on a worm gear allows for fine, incremental adjustments. The self-locking mechanism of the butterfly valve worm gear ensures the disc stays exactly where you set it, perfect for balancing complex systems.

High Pressure Differential

In systems where high pressure makes lever operation difficult or dangerous, the gearbox on our manual operated butterfly valve multiplies torque, ensuring smooth, safe, and controlled operation against the force of the media.

Safety-Critical Manual Shutoff

For emergency isolation points, a dependable manual valve is key. The clear position indicator and optional locking device on our butterfly valve with locking handle mechanism provide visual confirmation and prevent unauthorized operation.

Outdoor or Exposed Locations

The fully enclosed and sealed gearbox protects the operating mechanism from rain, dust, and corrosive atmospheres. This ensures the worm gear type butterfly valve remains easy to operate and reliable, even after long periods of inactivity.

Infrequent but Crucial Operation

Perfect for isolation valves that remain static for months but must work perfectly when needed. The high-torque gear ensures a powerful breakaway action to overcome a 'stuck' seat, making our hand operated butterfly valve exceptionally reliable.

CASE STUDY: AEROFORM SERIES WORM GEAR VALVES

How a Jordanian engineering firm secured a critical water infrastructure project by balancing performance, reliability, and budget with our integrated manufacturing approach.

Project: Upgrade of a municipal water distribution network, requiring 28 units of DN400 (16-inch) Class 150 wafer butterfly valves.
Contact: Mr. Tariq Al-Hamad, Senior Procurement Engineer.

THE CHALLENGE: MITIGATING RISK BEYOND THE DATASHEET

Mr. Al-Hamad's team was facing a common procurement dilemma. Their technical specifications demanded robust, gear-operated stainless steel butterfly valves for long-term service in a critical public utility. Initial quotes from premium European brands threatened the project's budget, while lower-cost offers from trading companies lacked the verifiable quality assurance needed to guarantee a 20+ year service life. "Our challenge wasn't finding a valve," Mr. Al-Hamad noted, "it was finding a manufacturing partner we could trust. We needed to mitigate risks related to material integrity and long-term operational reliability, not just get a low price."

THE SOLUTION: A DATA-DRIVEN PARTNERSHIP

Instead of broad promises, we provided Mr. Al-Hamad with a transparent, data-centric proposal focused on demonstrating value and mitigating his specific concerns. Our solution was built on four key pillars:

1. Cost Optimization through Vertical Integration

As a foundry-direct manufacturer with in-house casting capabilities supervised by our 20-year foundry expert founder, we bypassed intermediary costs. This allowed us to offer the AeroForm series valves at a price point that resulted in a 22% cost optimization for the client compared to their initial quotes from established European brands, bringing the valve package comfortably within their target budget without sacrificing material quality.

2. Verifiable Material Integrity and Quality Control

We addressed material concerns head-on by providing full traceability documentation, including our foundry's MTR (Material Test Report) for the ASTM A351 CF8 stainless steel body and our internal dimensional QC inspection reports for each valve. Crucially, we proactively offered to facilitate a paid, independent third-party inspection (PMI, pressure testing) by an accredited agency of their choice before shipment, demonstrating full confidence in our production quality.

3. Performance-Engineered Design for the Application

The DN400 size required high torque for operation. Our AeroForm valve with its robust, IP67-rated worm gear operator was a perfect fit. The gear mechanism provides the necessary mechanical advantage for easy manual operation and features a self-locking design essential for precise throttling and preventing disc drift in the water network. Furthermore, our proprietary seat design ensures bi-directional zero-leakage performance to ISO 5208 Rate A, a critical factor for water conservation and system efficiency.

4. A Commitment to Long-Term Value (LTV)

We supported our product with a comprehensive 24-month warranty that includes free replacement of any necessary spare parts. We also demonstrated that our valves are built to international standards, ensuring that wear-and-tear components like seats and seals can be easily sourced from the open market post-warranty, providing Mr. Al-Hamad with a clear and manageable long-term Total Cost of Ownership (TCO) outlook.

THE RESULTS: QUANTIFIABLE SUCCESS

The partnership delivered tangible, measurable outcomes that directly addressed the project's KPIs:

Budget Adherence: Achieved a 22% reduction in valve procurement costs against initial benchmark quotes, saving the project approximately \$18,500.
Schedule Assurance: Delivered the full order of 28 valves within the committed 8-week lead time, 2 weeks ahead of the client's critical path deadline for on-site installation.
Quality Validation: All 28 valves passed the client's on-site hydrostatic and seat leakage tests (to ISO 5208 Rate A) on the first attempt, with zero failures.
Operational Reliability: The worm gear operators were reported by the field team to be "smooth and easy to actuate," even under full line pressure, significantly reducing operator strain and time during commissioning.

"The gear-operated valves achieving a 22% cost saving without compromising on material integrity was a significant win for our project's profitability."

Tariq Al-Hamad Senior Procurement Engineer, EPC Firm, Jordan

QUALITY & COMPLIANCE CERTIFIED

Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.

Quick Change Seat Stainless Steel Wafer Type Butterfly Valve - Bare Stem

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Butterfly Valve Dimensions

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Sample MTC (EN 10204 3.1) - Material Traceability

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Frequently Asked Questions

What is the main advantage of a worm gear operator on this butterfly valve?

The worm gear on our butterfly valve with worm gear provides three key advantages: 1) **Mechanical Advantage:** It makes operating large valves (DN200+) or valves in high-pressure lines effortless. 2) **Precise Control:** The handwheel allows for fine throttling adjustments, and the self-locking mechanism holds the disc position securely. 3) **Safety:** It prevents "kick-back" from high flow rates, ensuring safe manual operation.
You mention 'foundry-direct.' How does this impact the quality of your worm gear valve?

Being foundry-direct gives us total material control. Our 20 years of casting experience ensure we produce a porosity-free body for every worm gear butterfly valve. We enrich our ASTM A351 CF8 steel with up to 9% Nickel—exceeding standard requirements—to maximize corrosion resistance and guarantee a longer service life, verified by full MTR traceability.
Is it possible to replace the worm gearbox with an electric or pneumatic actuator?

Yes, absolutely. The valve is designed for flexibility. The worm gearbox is mounted on a standard ISO 5211 actuator pad. This "future-proof" design allows for easy removal and direct mounting of a pneumatic or electric actuator at any time, protecting your investment and adapting to future plant automation upgrades.
What kind of quality assurance and warranty backs your valves?

We provide full transparency and assurance. Each butterfly valve with worm gear ships with complete documentation, including Material Test Reports (MTRs) from our foundry and our dimensional QC reports. This is all backed by our comprehensive 2-year warranty, confirming our commitment to long-term performance and reliability.