MUELLER STEAM 66M-ANI-6-1 Butterfly Valve Lug Mount 200PSI

( Brand: Mueller Steam ), ( Manufacturer Part Number: 66M-ANI-6-1 ), ( Part Type: Valve Mount )

Review MUELLER STEAM Inch Butterfly Valve Lug Mount 200psi

The **Mueller Steam 66M-ANI-6-1 Lug-Mounted Butterfly Valve** is a robust, high-performance industrial valve engineered specifically for demanding steam and high-temperature applications, delivering unmatched reliability and efficiency in demanding piping systems. Designed with Mueller s signature precision and durability, this **lug-mounted butterfly valve** features a **6-inch (150mm) nominal size** and is rated for **200 PSI (13.8 bar) working pressure**, making it ideal for medium to large-scale steam distribution networks, HVAC systems, and industrial process lines where consistent flow control and leak-proof performance are critical. Constructed from **cast ductile iron (ANI grade)**, the valve body is reinforced for superior strength and resistance to thermal cycling, corrosion, and abrasion, ensuring long-term operational integrity even in the most aggressive environments. The **double-offset disc mechanism** provides smooth, low-torque operation with minimal friction, reducing wear on the actuator and extending the valve s service life while maintaining precise throttling control. This design also minimizes seat wear and leakage, making it particularly well-suited for steam applications where tight sealing and energy efficiency are paramount.

The **lug-mounted configuration** offers flexibility in installation, allowing for easy field alignment and maintenance without the need for disassembly, as the valve can be removed or replaced while remaining securely attached to the pipeline. The **wafer-style lugs** are strategically positioned to distribute pressure evenly, preventing stress concentrations and enhancing structural integrity. The valve s **full-port design** ensures minimal pressure drop and optimal flow capacity, preserving system efficiency while the **EPDM or Nitrile seat options** (depending on application requirements) provide excellent resistance to steam, hot water, and various chemicals, ensuring a reliable seal across a wide temperature range. Additionally, the valve is equipped with a **standard ANSI Class 125 flange connection**, ensuring compatibility with most industrial piping systems and simplifying integration into existing infrastructure. Whether deployed in commercial buildings, industrial plants, or large-scale utility networks, the Mueller Steam 66M-ANI-6-1 delivers a perfect balance of performance, durability, and ease of maintenance, making it a trusted choice for engineers and operators demanding dependable flow control in high-pressure steam applications.

### **Pros and Cons of buying a Mueller Steam 66M-ANI-6-1 Butterfly Valve (Lug Mount, 200 PSI)**

1. **High-Quality Construction** Mueller is a well-established brand known for durable, reliable industrial valves. This valve is designed for steam service, ensuring it can handle high temperatures and pressure cycles without excessive wear.

2. **Lug-Mount Design** The lug-mounted configuration allows for easy installation and removal without cutting into the pipeline. This is beneficial for maintenance, repairs, or future modifications.

3. **200 PSI Rating** Suitable for moderate to high-pressure steam applications (up to 200 PSI at 500 F), making it versatile for many industrial, commercial, or institutional steam systems.

4. **ANI (Anti-Nose) Design** The ANI feature reduces the risk of valve damage from debris or improper handling, improving longevity.

5. **Standardized Sizing (6-inch)** A common size for medium to large steam distribution systems, reducing compatibility issues with existing piping.

6. **Corrosion Resistance** Likely made from materials like cast iron or stainless steel (depending on model variant), which helps prevent rust and extends service life in wet or corrosive environments.

7. **Easy Operation** Typically features a manual lever or actuator for straightforward on/off control, though some models may require an external actuator for automated systems.

8. **Compatibility with Steam Systems** Designed to handle steam s thermal expansion and pressure fluctuations better than generic valves.

---

1. **Cost** High-quality Mueller valves are more expensive than basic or generic alternatives, which may be a barrier for budget-conscious projects.

2. **Weight** Lug-mounted valves are heavier than wafer-type or flange-mounted options, requiring proper handling and installation equipment.

3. **Maintenance Requirements** Like all mechanical valves, it may need periodic lubrication, gasket replacement, or actuator adjustments to maintain optimal performance.

4. **Limited Pressure Range** While 200 PSI is sufficient for many applications, it may not be adequate for high-pressure industrial steam systems (e.g., power plants) requiring valves rated for 300 PSI or higher.

5. **Actuator Dependency** If an actuator is needed for automated control, additional costs and complexity arise. Manual operation may be less convenient in large or remote systems.

6. **Potential for Leakage Over Time** Gaskets and seals degrade with use, and improper installation can lead to steam leaks, requiring periodic inspections.

7. **Specialized Installation** Lug-mounted valves require precise alignment and bolting during installation, which may necessitate professional help if not done correctly.

8. **Limited Customization** Unlike some specialty valves, this is a standard design with fixed dimensions and pressure ratings, offering little flexibility for non-standard applications.

---

The **Mueller Steam 66M-ANI-6-1** is a robust, reliable valve well-suited for **medium-pressure steam systems (200 PSI) where durability, ease of installation, and long-term performance are priorities**. Its lug-mount design and anti-nose feature make it a practical choice for applications where frequent access or maintenance is required. However, its **higher cost, weight, and maintenance needs** may outweigh the benefits for smaller or low-budget projects.

For **commercial buildings, industrial plants, or institutional steam systems** where reliability and ease of service are critical, this valve is a strong recommendation. For **high-pressure or ultra-low-maintenance applications**, alternatives (e.g., wafer-style or higher-rated valves) might be more appropriate.

- You need a **durable, lug-mounted steam valve** for a **200 PSI system**.

- Your application requires **easy installation/removal** (e.g., retrofits or frequent maintenance).

- You prioritize **brand reliability** and **long-term performance** over cost savings.

- Your budget is tight (look for lower-cost brands or used valves).

- You require **higher pressure ratings** (e.g., 300 PSI).

- The valve will be in a **low-maintenance environment** where simpler designs (e.g., wafer-style) suffice.

- You need **custom sizing or non-standard features** not offered by this model.

For most **standard steam distribution systems**, this Mueller valve is a **solid, well-engineered choice** that balances performance and practicality. Always verify compatibility with your specific system s pressure, temperature, and media conditions before purchasing.

Details:

All listed items are in stock at Bullseye Industrial Sales 180,000 sq. LOCAL PICK-UP, Prefer to pick it up yourself. The shipping price is shown for US lower 48 states. Quick Links Contact.

Equipped with built-in full-lug alignment holes around the valve body perimeter. Need it urgently. After the return period has ended, you can no longer product. Expedited shipping is also available.

We choose the carrier. Your phone number and business name. Will there be a dock or forklift. height : 6 in.

Next Day Second Air Services are available. width : 13 in.

part #: 66mani61 prices

• $31.63-$39.95

specifications valvesplumbing:

• brand: Mueller Steam
• mpn: 66m-ani-6-1
• part type: Valve Mount

general valvesplumbing:

• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Other Valves Manifolds
• condition: Used

offer valvesplumbing:

• availability: In Stock
• options: Ship-to-home
• best offers: True
• sold: 0
• quantity: 2
• started: May 22, 2026

returns valvesplumbing:

• policy: Returns Accepted
• time: 30 Days
• method: Money back
• paid by: Buyer

seller valvesplumbing:

• # reviews: 65629
• city: Middlebury, Indiana
• rating: 99.8%

payments valvesplumbing:

• wallet: Paypal
• other
• credit card: Diners-club

shipping valvesplumbing:

• class: Standard, One-day
• service: UPS Ground, UPS Next Day Air, USPS Ground Advantage
• transit: 5-8 Days
• carrier: UPS, USPS
• type: Calculated
• cost: $56.40

Mueller Steam 66M-ANI-6-1 Is Similar To:

• 032888166646 Mueller Brass Female Gas Ball Valve (38.9% similar) ...(February 9th, 2019)
• 100-010 Mueller Brass Gate Valve 032888000100 (36.4% similar) And later Mueller brass co. From the manufacturer since their beginning in 1917 as Mueller metals co. By entering your model number...(October 24th, 2018)
• 100-202nl Mueller Industries Gate Valve Low Lead Threaded Ips 032888118492 (37.4% similar) Low lead forged brass gate valve features and functions: china: heavy-duty, construction, 250 PO. Water, oil, or air, 125 PO. 25 weighted average lead content on whetted surfaces. Full flow, non rising stem, coated aluminum handle. DOB 92 mfr 100-202NL. Manufactured to include no more than. Gate ...(January 25th, 2019)
• 100-203 B K Mueller Gate Valve (33.7% similar) Mueller gate valve brass 1/2 heavy duty threaded model for air oil water...(March 8th, 2017)
• 105-604 Mueller New Brass Stop Waste Valve Solder (38.6% similar) B k 3/4 stop and waste valve...(July 12th, 2018)
• 105-614nl Mueller Stop Waste Valve 0.25 (42.3% similar) Maximum pressure: 125 psi compatible pipe material: copper tubing push to connect: yes maximum temperature: 180 deg. 25 minimum working temperature: 20 deg.: stop valve application: for use with water, oil or immaterial: copper valve and waste average lead content: less than. Brand name: Mueller ...(March 7th, 2017)
• 107-006nl Mueller Ball Valve 0.25 032888118355 (34.2% similar) You can reach us at. Maximum pressure: 600 psi connection method: threaded packaging type: boxed material: brass application: for use with flammable liquid valve threaded finish: brass handle lever chrome plated: yes full port: yes average lead content: lead-free number of turns: quarter turn ...(May 10th, 2017)
• 107-404 Mueller New Npt Brass Ball Valve Full Port Valves Wog (42.9% similar) 600PSI max water, oil, or gas 150 psi for water Steam pressure 1/4 turn shutoff. Listing includes: 5 new Mueller 3/4 not full port ball valves 600WOG, 150WSP these are good for virtually all applications...(May 20th, 2018)
• 107-404hc Mueller Muellar Brs Fpt Ball Valve 032888074040 (37.7% similar) ...(April 11th, 2018)
• 107-454hc Mueller Lot If Solder Sweat Ball Valve Full Port New (42.5% similar) Item is brand new. Make me an offer...(October 13th, 2018)
• 2361 Mueller Gate Valve Mj Flange Di Resilient Wedge New Old (33.6% similar) Never been off the factory pallet. Qty one Mueller 24 gate valve, never installed, date 2006 , model 2361, resilient wedge. Please disregard material in picture other than the valve, not part of this sale. Valve is about 2400 lbs. Mechanical joint x flange C515 DI, away...(March 18th, 2018)