MAX SEAL 52-DI-SS-S6-E-E-N-65 Lug Butterfly Valve 2.5

( Brand: Max Seal ), ( Manufacturer Part Number: 52-DI-SS-S6-E-E-N-65 ), ( Part Type: Valve ), ( Butterfly Valve Type: Wafer ), ( Disc Material: Stainless Steel ), ( Diameter: 2 1/2 In ), ( Body Material: Ductile Iron ), ( Unit Type: Unit )

Review MAX SEAL Lug Type Butterfly Valve 2.5 Inch

The **Seal 52-DI-SS-SS6-E-E-N-65 Lug Butterfly Valve (2.5")** is a high-performance, industrial-grade valve engineered for demanding applications requiring exceptional durability, corrosion resistance, and reliable sealing performance. This valve is constructed from **stainless steel (SS)**, specifically **Type 316 or 316L**, which ensures outstanding resistance to a wide range of aggressive chemicals, saltwater, and harsh environmental conditions, making it ideal for use in marine, chemical processing, water treatment, and offshore oil and gas industries. The **lug-type design** provides a robust and secure mounting configuration, allowing for easy installation and removal without disturbing piping connections, which is particularly advantageous in retrofitting or maintenance scenarios.

Featuring a **2.5-inch (DN65) nominal size**, this valve is well-suited for medium-flow applications where precise control and minimal pressure drop are essential. The **double-flanged (DI-SS-SS) construction** enhances structural integrity, ensuring stability under high-pressure differentials and thermal cycling. The **E (extended shaft) and E (extended disc) configuration** optimizes the valve s operation, reducing the risk of shaft binding or misalignment while improving torque distribution for smoother actuation. The **N (non-rising stem) design** further enhances reliability by preventing stem protrusion during valve closure, which minimizes the risk of damage in confined spaces or when the valve is exposed to external forces.

The valve incorporates a **seal system** that combines high-quality elastomers or PTFE (polytetrafluoroethylene) materials, depending on the application requirements, to deliver an airtight and leak-proof performance. This ensures zero or near-zero leakage even under fluctuating pressure conditions, making it suitable for critical fluid transfer systems where contamination or spillage cannot be tolerated. The **butterfly disc** operates with a full-port design, maintaining minimal flow restriction and reducing energy losses compared to traditional globe or gate valves. Additionally, the valve s **low torque requirement** simplifies manual or automated operation, reducing wear on actuators and prolonging the valve s service life.

Constructed to meet stringent industry standards, including **API 609, ANSI B16.10, and ASME B16.5**, this valve is built for long-term reliability and compliance with rigorous safety protocols. Its **welded body and flanges** provide superior strength, while the **integrated gaskets and sealing rings** ensure consistent performance across a wide temperature range, from cryogenic to high-temperature applications. Whether deployed in **offshore platforms, chemical plants, desalination facilities, or municipal water systems**, this valve delivers uncompromising performance, making it a trusted choice for engineers and operators demanding precision, longevity, and corrosion resistance in their fluid control systems.

### **Analysis of buying a Seal 52-DI-SS-S6-E-E-N-65 Lug Butterfly Valve (2.5")**

- The valve is constructed from **stainless steel (SS)**, which offers excellent corrosion resistance, making it suitable for harsh environments, including chemical processing, water treatment, and marine applications. Stainless steel also has a longer lifespan compared to carbon steel or cast iron.

- Lug-style butterfly valves are **easily removable** without disturbing piping connections, which simplifies maintenance and replacement. This is particularly useful in systems where frequent inspections or valve changes are required.

- The **EPDM or Nitrile (NBR) seat material** (depending on the exact specification) provides a tight seal, reducing leakage and ensuring reliable operation. The **double-offset design (S6)** improves sealing efficiency, especially at low flow rates or with dirty fluids.

- The valve is likely rated for **high-pressure and temperature applications** (commonly up to **150 PSI/10 bar and 200 F/93 C**, though exact ratings should be verified). This makes it versatile for industrial and commercial piping systems.

- Stainless steel construction and robust sealing mechanisms contribute to **reduced wear and tear**, lowering long-term maintenance costs. The lug design also prevents stress on the pipe flanges, extending the life of the entire system.

- Many lug-style butterfly valves can be **actuated manually or via electric/pneumatic actuators**, making them adaptable to automated control systems. This is beneficial in large-scale industrial applications.

- Compared to ball valves or globe valves, butterfly valves offer **lower pressure drop** at high flow rates, making them energy-efficient for large-diameter pipelines.

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- While suitable for many industrial applications, lug butterfly valves are **not ideal for extremely high-pressure systems** (e.g., above 200 PSI/14 bar without reinforcement). For such cases, gate valves or ball valves may be more appropriate.

- The **seat material (EPDM/NBR) can degrade** if exposed to incompatible chemicals (e.g., oils, solvents, or extreme temperatures). Regular inspection and seat replacement may be necessary in aggressive environments.

- Stainless steel lug butterfly valves are generally **more expensive upfront** than carbon steel or plastic valves. However, their longevity often justifies the cost in industrial settings.

- Large-diameter valves (e.g., 2.5" and above) can require **significant torque** to operate manually, which may necessitate an **actuator** for ease of use in inaccessible locations.

- Unlike globe valves, butterfly valves **do not provide fine flow control** they are typically used for **on/off or throttling applications with moderate precision**. For precise regulation, other valve types may be better suited.

- In systems with **high-velocity fluid flow**, the valve disc may experience **cavitation erosion**, reducing its lifespan. This is less common in 2.5" valves but should be considered in high-flow applications.

- Lug-style valves require **proper alignment and gasket installation** to prevent leaks. Improper installation can lead to **flange leaks or valve misalignment**, increasing maintenance needs.

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The **Seal 52-DI-SS-S6-E-E-N-65 lug butterfly valve (2.5")** is a **high-quality, durable, and versatile** choice for **industrial, commercial, or municipal piping systems** where **corrosion resistance, ease of maintenance, and reliable sealing** are priorities. Its **stainless steel construction, lug design, and double-offset mechanism** make it well-suited for **water treatment, chemical processing, HVAC, and marine applications**.

However, it is **not ideal for ultra-high-pressure systems, extreme chemical exposure (without proper seat materials), or applications requiring precise flow control**. If the valve is used in **aggressive environments**, verifying the **seat material compatibility** (e.g., PTFE for chemicals, EPDM for water) is crucial.

For **general industrial use, especially where maintenance accessibility is important**, this valve is a **strong recommendation**. If the application involves **extreme conditions (high pressure, corrosive fluids, or precise throttling)**, alternative valve types (e.g., **ball valves, gate valves, or wafer-style butterfly valves**) may be more appropriate.

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You need a **corrosion-resistant, easy-to-maintain valve** for **water, wastewater, HVAC, or mild chemical systems**.

The application requires **quick removal for servicing** without disturbing piping.

You operate in **moderate to high-pressure (up to 150 PSI) and temperature (up to 200 F) conditions**.

**Cost-effectiveness over time** (due to durability) is a priority.

The system requires **ultra-high pressure (above 200 PSI)** or **extreme temperature resistance**.

**Precise flow control** is needed (globe or ball valves may be better).

The fluid is **highly corrosive** (e.g., strong acids), and the seat material may not be compatible (verify with the manufacturer).

**Space is extremely limited**, and a **wafer-style valve** would be more compact.

- **Check the exact seat material** (EPDM, NBR, PTFE, etc.) to ensure compatibility with your fluid.

- **Verify the actuator type** if automation is required.

- **Confirm the pressure and temperature ratings** with the manufacturer s datasheet, as specifications can vary by model.

- **Ensure proper installation** (gasket sealing, alignment) to prevent leaks.

Overall, this valve is a **solid industrial choice** for many applications, provided the operating conditions align with its capabilities.

Details:

Tight shut-off capability helps prevent leakage and system loss. 316 stainless steel disc ensures corrosion resistance and smooth operation. Cash on Pickup. Some exceptions may apply.

Compatible with standard flange connections for easy integration. Ideal for HVAC, water treatment, industrial processing, and utility systems. Compact design allows installation in tight piping spaces. Shipping: Shipping cost: UPS Calculated.

Crafted from high-quality 316 stainless steel, it offers superior corrosion resistance, making ideal for various industrial applications. Buyers pay for return shipping. With its lug type design, installation is straightforward and efficient, providing you with peace of mind long-lasting performance. Durable ductile iron DI body for strength and long service life.

High durability design reduces maintenance requirements and downtime. This 2.5 body valve features a durable ductile iron DI seat and an EPDM disc, ensuring excellent Sealing performance resistance to wear. Manual or actuated operation depending on system setup. Lug-style body construction allows secure bolted installation between flanges.

Max Seal 52-DI-SS-S6-E-E-N-65 Lug Type Butterfly Valve 2.5: Introducing the Valve, a robust and reliable solution for your fluid control needs. Let us know whats going on, and we ll provide you a return label. EPDM seat provides excellent Sealing performance and chemical resistance. Suitable for a wide range of operating temperatures depending on media.

part #: 52disss6een65 price

• $159.99

specifications valvesplumbing:

• brand: Max Seal
• mpn: 52-di-ss-s6-e-e-n-65
• part type: Valve
• butterfly valve type: Wafer
• disc material: Stainless Steel
• diameter: 2 1/2 In
• body material: Ductile Iron
• unit type: Unit

shipping valvesplumbing:

• carrier: UPS, USPS
• cost: $23.00
• transit: 3-7 Days
• type: Calculated
• service: UPS Ground, UPS Next Day Air, USPS Priority Mail
• class: Standard, One-day, Expedited

offer valvesplumbing:

• started: June 3, 2026
• quantity: 3
• options: Ship-to-home
• availability: In Stock
• sold: 0
• best offers: True

general valvesplumbing:

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

payments valvesplumbing:

• credit card: Mastercard
• other
• wallet: Paypal
• cash

returns valvesplumbing:

• time: 14 Days
• policy: Returns Accepted
• paid by: Buyer
• method: Money back

seller valvesplumbing:

• rating: 99.8%
• # reviews: 24850
• city: Fleetwood, Pennsylvania

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