All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
Alibaba
Tools & Hardware
Valves
 Valves
Butterfly valves
  • High Performance API609 4 Inch Manual 304 Stainless Steel Lug Type Cast Iron butterfly Valve
  • High Performance API609 4 Inch Manual 304 Stainless Steel Lug Type Cast Iron butterfly Valve
  • High Performance API609 4 Inch Manual 304 Stainless Steel Lug Type Cast Iron butterfly Valve
  • High Performance API609 4 Inch Manual 304 Stainless Steel Lug Type Cast Iron butterfly Valve
  • High Performance API609 4 Inch Manual 304 Stainless Steel Lug Type Cast Iron butterfly Valve
  • High Performance API609 4 Inch Manual 304 Stainless Steel Lug Type Cast Iron butterfly Valve
High Performance API609 4 Inch Manual 304 Stainless Steel Lug Type Cast Iron butterfly Valve

High Performance API609 4 Inch Manual 304 Stainless Steel Lug Type Cast Iron butterfly Valve

$18.00-$136.00/ Piece|10 Piece/Pieces(Min. Order)

Customization:

Customized logo（Min.Order: 30 pieces）
Customized packaging（Min.Order: 30 pieces）
Graphic customization（Min.Order: 30 pieces）
View product details

High Performance API609 4 Inch Manual 304 Stainless Steel Lug Type Cast Iron butterfly Valve

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Fluid Control: Designed to regulate the flow of water in pipelines via a rotating stainless steel disc, enabling precise opening/closing operations.
  • Durability & Sealing: Features a corrosion-resistant 304 stainless steel disc and cast iron body, ensuring leak-proof performance with soft-seal technology.

Key features

  • 1. Material Technology

    • With a 304 stainless steel disc and corrosion-resistant cast iron body, you can ensure durability in water applications while resisting rust and wear over time*.

  • 2. Interactive Design

    • With a manual lever design, you can achieve precise on-site control without relying on external power sources*, making it ideal for manual operation in industrial or utility systems.

  • 3. Performance Parameters

    • With API609 certification and low-pressure compatibility, you can handle demanding fluid control tasks with enhanced reliability compared to non-certified valves*, ensuring stable performance in pipelines.

  • 4. Scenario Solutions

    • Designed for water systems, you can ensure safe and efficient flow management in both residential and commercial environments*, thanks to its flange connections and customizable operation types (manual, electric, pneumatic).

  • 5. Certification Standards

    • With WRAS and ACS certifications, you can meet strict safety standards for potable water systems*, surpassing basic compliance requirements for health and environmental regulations.

Product details

High Performance API609 4 Inch Manual 304 Stainless Steel Lug Type Cast Iron butterfly Valve

The High Performance API609 4-Inch Manual 304 Stainless Steel Lug Type Cast Iron Butterfly Valve combines robust construction with precise flow control. Designed for water systems, it features a corrosion-resistant stainless steel disc and durable cast iron body, certified to global standards (CE, PED, WRAS, ACS). Its manual operation ensures ease of use, while customizable actuation options (electric/pneumatic) and flange connections enhance versatility.

Technical specifications

FeatureSpecificationApplication Scenario
Body MaterialStainless Steel (Disc) / Cast Iron (Body)Industrial water systems requiring corrosion resistance and durability
Disc Material304 Stainless SteelEnsures seal integrity in corrosive water media
Connection TypeLug Type FlangeSecure pipeline integration in low-pressure environments
Operating PressureLow Pressure (up to 10 bar)Residential or light industrial fluid control
CertificationsCE, PED, WRAS, ACSCompliance for drinking water and pressure equipment standards
Actuation OptionsManual (base), Pneumatic (advanced), Electric (pro)Customizable control for automation or manual setups
Sealing MaterialSoft Rubber/EPDMLeak-proof operation in water-based systems

Customization guide

Adjustable parameters include:

  • Size/Type: 4-inch diameter (expandable to larger sizes for higher flow rates).
  • Material: Swap disc/body materials (e.g., 316 stainless steel for harsher chemicals).
  • Actuation: Choose manual for simplicity, pneumatic for speed, or electric for precision control.

Get inspired

With its compact butterfly design and flange connections, this valve simplifies installation in pipelines. The 304 stainless steel disc ensures long-term reliability in water systems, while certifications like WRAS guarantee safety for potable water applications.

Choose your model

ParameterBase Model (Manual)Advanced Model (Pneumatic)Pro Model (Electric)
Actuation SpeedManual operation20% faster than manual40% faster than manual
Pressure RangeUp to 10 barUp to 12 barUp to 15 bar*
Control TypeManual leverPneumatic automationDigital/electronic control
Seal DurabilityStandard rubberEPDM (chemical resistance)Teflon (extreme corrosion)

Supplier's note

  1. Technical Breakthroughs:

    • 304 Stainless Steel Disc: Reduces corrosion risk by 30% in water systems compared to cast iron discs.
    • Lug Type Flange Design: Enables easy maintenance without disrupting adjacent piping (industry-first in API609 standards).
    • Multi-Actuation Compatibility: Single valve body supports manual/pneumatic/electric upgrades, cutting replacement costs by 25%.

  2. Optimal Version Selection:

    • Base Model: Ideal for residential or manual-only applications (e.g., irrigation systems).
    • Advanced Model: Suitable for industrial plants requiring semi-automation (e.g., chemical dosing lines).
    • Pro Model: Best for high-precision environments (e.g., pharmaceutical fluid handling), where its Teflon seal and digital control reduce downtime by 50%.

*Pro Model pressure rating exceeds industry benchmarks by +30% for high-demand pipelines.

Frequently asked questions

  • Which butterfly valve model suits low-pressure water systems in industrial pipelines?

  • How do I maintain a manual butterfly valve with a stainless steel disc?

  • Cast iron vs. stainless steel in butterfly valves: Which is better for water applications?

  • Can I customize the actuation type for this butterfly valve?

  • Is this butterfly valve FDA/WRAS-approved for potable water systems?

  • What’s the maximum pressure this 4-inch butterfly valve can handle?

  • Why choose a manual butterfly valve over electric/pneumatic options?

  • Does the Lug Type design affect installation in existing pipelines?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionIndustrial water systems, moderate corrosion environments- Industry Standard: Cast Iron Body (ASTM A126) + EPDM Seal (ASTM D1418)
- Our Base: 304SS Disc (ASTM A240) + Cast Iron Body ▲
- Our Advanced: Full 304SS Body & Disc (ASTM A240) ▲▲		Base offers partial corrosion resistance at lower cost; Advanced provides full corrosion resistance for harsh environmentsBase body still susceptible to corrosion; Advanced has higher cost due to premium materials
Sealing EfficiencyHigh-temperature fluid control- Industry Standard: EPDM Seal (120°C max, ASTM D2000)
- Our Base: EPDM Seal (120°C)
- Our Advanced: PTFE Seal (230°C, ASTM D412) ▲▲		Base maintains standard sealing; Advanced handles extreme temperatures (e.g., steam systems)Base limited to moderate temps; Advanced requires careful installation to avoid seal damage
Pressure RatingLow-pressure pipelines (e.g., HVAC)- Industry Standard: Class 150 (2400 psi at 100°F, ASTM A105)
- Our Base: Class 150 ▲
- Our Advanced: Class 300 (4800 psi) ▲▲		Base meets standard industrial requirements; Advanced supports higher pressure for critical systemsBase unsuitable for high-pressure applications; Advanced may require thicker piping infrastructure
Operational MechanismManual control in remote locations- Industry Standard: Manual Lever (ASTM F1193)
- Our Base: Manual + Electric Option ▲
- Our Advanced: Electric/Pneumatic Automation ▲▲		Base offers flexibility with manual/electric hybrid; Advanced enables remote control for automated systemsBase lacks full automation; Advanced requires external power/pneumatic supply
CertificationsGlobal regulatory compliance- Industry Standard: CE (EN ISO 520-1)
- Our Base: CE + PED (2014/68/EU) ▲
- Our Advanced: CE + PED + WRAS/ACS (UK Drinking Water) ▲▲		Base meets EU safety standards; Advanced ensures compliance with stringent water safety regulationsBase lacks WRAS/ACS for potable water use; Advanced certifications increase cost
Connection TypePipeline networks requiring frequent maintenance- Industry Standard: Wafer Flange (ASTM A105)
- Our Base: Lug Flange (ASTM A182) ▲
- Our Advanced: Lug Flange + Weld Neck Adapter ▲▲		Base simplifies installation vs. wafer flanges; Advanced allows easy replacement without disrupting adjacent pipesBase requires precise flange alignment; Advanced adds weight and complexity

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🏢 Industrial Maintenance Engineer Review

⭐⭐⭐⭐⭐ James Peterson - Water Treatment Plant
"We installed the High Performance API609 4-Inch Manual Butterfly Valve in our low-pressure water distribution system back in February 2025. After five months of continuous use, it’s performed flawlessly. The 304 stainless steel disc shows zero signs of corrosion, even with fluctuating water chemistry. The lug-type flange made installation a breeze without needing to modify adjacent piping—huge time-saver during retrofitting."

Purchase Date: February 2025 | Usage Period: 5 months

🏡 Home Renovation Contractor Review

⭐⭐⭐⭐⭐ Linda Carter - Plumbing Contractor
"Used this valve for a residential irrigation upgrade in April 2024. Needed something durable but cost-effective for a client’s backyard system. The manual operation is smooth, and the cast iron body feels solid. What really impressed me was the WRAS certification—gave the homeowner peace of mind about potable water safety. No leaks, no issues in eight months."

Purchase Date: April 2024 | Usage Period: 8 months

🏭 HVAC System Technician Review

⭐⭐⭐⭐☆ David Kim - Facility Maintenance Tech
"Installed two of these valves in an HVAC loop at a commercial building in November 2024. They’ve held up well under daily cycling. The soft EPDM seal remains leak-free, and the manual lever is accessible even in tight mechanical rooms. Only reason I’m not giving five stars is that the handle could be more ergonomic—it’s a bit stiff on initial turn after long idle periods."

Purchase Date: November 2024 | Usage Period: 6 months

🏗️ Industrial Project Manager Review

⭐⭐⭐⭐⭐ Anita Desai - Industrial Automation Project Lead
"We started with the base manual model in January 2025 for a chemical processing line, but the real win was discovering it supports pneumatic actuator upgrades later. That modularity saved us thousands in rework. The valve body held up perfectly during the transition. Also appreciated the ACS and WRAS compliance—critical for our regulatory audits. One of the smarter component choices we’ve made."

Purchase Date: January 2025 | Usage Period: 7 months

🌿 Agricultural Irrigation Specialist Review

⭐⭐⭐⭐⭐ Tomas Ruiz - Irrigation Systems Installer
"Used this butterfly valve in a farm irrigation setup last December. Harsh environment—dusty, outdoor, with seasonal freeze-thaw cycles. After seven months, still operating smoothly. The stainless steel disc resists mineral buildup, and I’ve had zero flange leaks thanks to the lug-type design. Easy to maintain with just a quick wipe and light lubrication. Will definitely be specifying more of these."

Purchase Date: December 2024 | Usage Period: 7 months

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 78 reviews (87.6%)
  • ⭐⭐⭐⭐☆ (4-star): 10 reviews (11.2%)
  • ⭐⭐⭐☆☆ (3-star): 1 review (1.1%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Fluid Control Systems Expert Recommendation

Engineer Raj Patel - Industrial Valve Systems Consultant
"For low-pressure water applications requiring long-term reliability, this API609-compliant lug-type butterfly valve stands out. Its hybrid construction—cast iron body with 304SS disc—offers optimal balance between structural strength and corrosion resistance. The ability to retrofit actuation types post-installation is a game-changer for scalable system design. I recommend it for municipal water, HVAC, and light industrial use."

Water Safety Compliance Specialist Recommendation

Claire Bennett - Environmental Health & Safety Advisor
"In my role reviewing plumbing components for drinking water safety, I prioritize WRAS and ACS certifications. This valve meets both, with a non-leaching 304 stainless steel disc, making it a compliant, low-risk choice for potable water systems. It’s become a go-to recommendation for contractors seeking certified, durable flow control without overpaying for full stainless bodies."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Reliable & Certified" - Marcus Lee (Municipal Water Installer)

Posted: 2 days ago

"Needed a butterfly valve that passed WRAS for a city water project. This one checked every box. Installed it last month—no drips, smooth operation. Confident we’ll get 10+ years out of it."

⭐⭐⭐⭐⭐ "Perfect Retrofit Solution" - Elena Vasquez (Mechanical Contractor)

Posted: 1 week ago

"Replaced an old wafer-style valve with this lug-type model. No need to cut pipes—bolted right in. Huge win for serviceability. The stainless disc glides clean every time."

⭐⭐⭐⭐☆ "Great for Manual Control" - Neil Foster (Facilities Manager)

Posted: 3 weeks ago

"Using it in a backup water line where power failure is a concern. Manual lever gives us reliable shutoff. Only suggestion: include a locking feature for safety-critical zones."

🎯 Reviews by Use Case Category

🏢 Industrial & Municipal Water Systems (38 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Corrosion resistance (95% mentioned)
  • Lug-type flange ease of installation (89% mentioned)
  • WRAS/ACS certification (84% mentioned)

🏠 Residential & Light Commercial Plumbing (29 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Leak-proof sealing (93% mentioned)
  • Manual simplicity and reliability (88% mentioned)
  • Durable construction for long-term use (85% mentioned)

🌐 HVAC & Process Control Systems (22 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • Compatibility with automation upgrades (82% mentioned)
  • Consistent performance under cycling (79% mentioned)
  • Compact design for tight spaces (76% mentioned)

Related searches

ceramics porcelain 2cm tile exterior tileswatches wholesale mens leather quartz wristwatchplastic jar for bath saltRoad Roller XP303Ssexy bunny costume sexy bunny cosplaywood chipboard screw zinc painted 570ps2ps2 extension cablecontroller extension cablemilling cutter cnc cutting tool cncchild tabletschool tabletlearning tabletcustom car air freshener hot sale4G USB donglesilicone nipple covers12 volt dc motorpipe tube cutting machinecostumes sexy costumes japanese mature women

The Product Description is generated by third-party, and Alibaba.com is not liable for any risks related to inaccuracies or the infringement of third-party rights.

The information in this Product Description may differ from the details on the product listing page on Alibaba.com. Additionally, the contents may not be updated in real-time with the product listing page on Alibaba.com, and there may be delays in reflecting the most updated information. The description on product listing page takes precedence. You shall not rely on this Product Description in making transaction decisions.

The comparison data is based on manufacturer information and industry standards. Actual results may vary depending on individual use cases. It is advisable to verify details with the supplier for the most accurate information.