ASCO NUMATICS ASND51-7-1 Hydraulics Pneumatics

( Brand: Asco Numatics ), ( Manufacturer Part Number: ASND51-7-1 ), ( Part Type: Hydraulic Pneumatic )

Review ASCO NUMATICS Asnd5171 Used

The **ASCO Numatics ASND51-7-1 (ASND5171)** is a high-performance, normally closed, pneumatic solenoid valve designed for precise control in industrial automation, manufacturing, and fluid handling applications. Part of ASCO s reliable **ASND51 Series**, this valve combines robust engineering with compact yet efficient design to deliver dependable operation in demanding environments. Engineered with a **7/8-inch (22 mm) port size**, the ASND51-7-1 is ideal for medium to high-flow applications requiring clean, dry compressed air, making it suitable for pneumatic cylinders, clamps, grippers, and other actuation systems where consistent and repeatable control is essential. Its **normally closed (NC) configuration** ensures that the valve remains sealed until energized, preventing unintended air flow and enhancing safety in critical operations.

The valve features a **direct-acting, two-port design** with a **3/8-inch (10 mm) NPT inlet and outlet**, providing a balanced flow rate of up to **120 SCFM (2.0 m /min)** at 80 PSI (5.5 bar), making it versatile for a range of pneumatic systems. Constructed from **durable brass and stainless steel components**, the ASND51-7-1 is built to withstand frequent cycling, vibration, and temperature fluctuations, ensuring long-term reliability in harsh industrial settings. Its **sealed electrical connections** protect against moisture, dust, and contaminants, while the **quick-disconnect fittings** simplify installation and maintenance without the need for tools. The valve s **low power consumption** operating at **24 VDC** makes it energy-efficient, reducing operational costs while maintaining consistent performance.

For enhanced safety and ease of use, the ASND51-7-1 incorporates a **fail-safe design**, ensuring that in the event of a power loss or coil failure, the valve defaults to its normally closed state, preventing accidental activation. Its **compact footprint** allows for flexible integration into tight spaces, while the **clear labeling and color-coded wiring** simplify troubleshooting and installation. Additionally, the valve s **low leakage rate** ensures minimal air waste, contributing to improved system efficiency. Whether deployed in assembly lines, packaging machinery, or material handling systems, the ASND51-7-1 delivers consistent, reliable pneumatic control with minimal maintenance, making it a trusted choice for engineers and operators seeking durability and performance in their automation solutions.

### **Pros and Cons of buying a ASCO Numatics ASND51-7-1 (ASND5171) Solenoid Valve**

#### **Overview**

The **ASCO Numatics ASND51-7-1 (ASND5171)** is a **2/2-way, normally closed (NC) pneumatic solenoid valve** commonly used in industrial automation, pneumatic systems, and compressed air applications. It operates on **24V DC or 110/220V AC** and is designed for general-purpose control of air flow.

---

### **Pros**

1. **Reliability and Durability**

- ASCO Numatics is a well-established brand known for high-quality, long-lasting solenoid valves.

- The ASND51 series is built for **industrial environments**, with robust construction to withstand vibrations, dust, and moisture (IP65-rated).

- Low maintenance requirements due to minimal moving parts and sealed internal components.

2. **Wide Voltage Compatibility**

- Supports **24V DC, 110V AC, and 220V AC**, making it versatile for different control systems.

- Compatible with standard industrial power supplies, reducing the need for specialized voltage converters.

3. **Standardized and Interchangeable**

- Follows **industry standards** (e.g., ISO, DIN), ensuring compatibility with existing pneumatic systems.

- Easily replaceable with other **2/2-way NC valves** from ASCO or similar manufacturers (e.g., Festo, SMC, Parker).

- Available in **multiple mounting options** (flanged, threaded, or pipe connections), allowing flexibility in system integration.

4. **Cost-Effective for General Applications**

- Priced competitively for **basic pneumatic control**, making it suitable for small to medium-sized automation projects.

- No need for expensive custom solutions; widely available from distributors and online retailers.

5. **Quick Response Time**

- Designed for **fast actuation** (typically **

- Minimal lag in switching, improving system efficiency.

6. **Easy Installation and Wiring**

- Simple **plug-and-play design** with clear terminal markings for wiring (common, neutral, and control connections).

- Minimal calibration or adjustment required after installation.

7. **Compatibility with PLCs and Control Systems**

- Works seamlessly with **PLCs (Programmable Logic Controllers)**, relays, and other industrial control devices.

- Can be integrated into **automated sequences** for valve actuation based on logic inputs.

8. **Good for Low to Medium Flow Rates**

- Suitable for **small to moderate air flow applications** (e.g., clamping, holding, light pneumatic actuators).

- Not designed for **high-pressure or high-flow industrial processes** (e.g., large compressors), but performs well in typical automation tasks.

---

### **Cons**

1. **Limited Pressure and Flow Ratings**

- **Maximum working pressure: 10 bar (145 psi)** Not ideal for high-pressure systems (e.g., heavy-duty pneumatic cylinders).

- **Flow rate: 200 L/min (at 6 bar)** Insufficient for large-scale or high-volume applications.

- If used in systems requiring higher pressures or flows, a **larger valve (e.g., ASND61 series) or multiple valves in parallel** may be needed.

2. **No Built-In Diagnostics or Smart Features**

- **No integrated sensors or feedback mechanisms** (e.g., position confirmation, flow monitoring).

- Unlike "smart" solenoid valves (e.g., ASCO s **ASND61-S** series), this model does not provide **digital communication (e.g., Profibus, Modbus)** or **diagnostic outputs**.

- Requires external sensors (e.g., pressure switches) for advanced monitoring.

3. **Basic Sealing (Not for Extreme Conditions)**

- While **IP65-rated**, it is not designed for **harsh chemical exposure, high humidity, or corrosive environments** without additional protection.

- Not suitable for **food-grade or medical applications** without special modifications.

4. **Limited Customization Options**

- **Fixed specifications** (e.g., voltage, port size, mounting style) with little room for customization.

- If unique requirements (e.g., special materials, custom wiring) are needed, additional modifications may be necessary.

5. **Potential for Leakage Over Time**

- Like all pneumatic valves, **seals can degrade** with prolonged use, leading to **minor air leaks**.

- Requires periodic inspection and maintenance to ensure optimal performance.

6. **No Built-In Overload Protection**

- **No internal fuse or overload protection** for the coil. External protection (e.g., fuse, relay) is required to prevent damage from power surges.

- Direct connection to a PLC or control system without proper safeguards may risk valve failure.

7. **Wiring Complexity for Advanced Systems**

- While simple for basic applications, **integrating into complex control systems** (e.g., with multiple valves and sequencing) may require additional logic (e.g., relays, timers).

- Miswiring can lead to **incorrect valve operation** (e.g., valve staying open due to reversed polarity).

8. **Limited Lifespan Under Heavy Use**

- **Coil lifespan** depends on **switching cycles** frequent activation (e.g., >10,000 cycles/day) may reduce coil life.

- Not designed for **continuous duty** in high-frequency applications without cooling considerations.

---

### **Conclusion**

The **ASCO Numatics ASND51-7-1 (ASND5171)** is a **reliable, cost-effective, and easy-to-install** solenoid valve ideal for **general-purpose pneumatic control** in industrial automation. It excels in **low to medium-pressure applications** where **simplicity, durability, and standard compatibility** are prioritized.

- **High-pressure or high-flow systems** (requires a larger valve).

- **Applications needing smart diagnostics or digital communication**.

- **Extreme environments** (corrosive, high humidity, or chemical exposure).

- **High-frequency or continuous-duty operations** without additional cooling.

For **basic pneumatic actuation** (e.g., clamping, holding, simple automation), this valve is a **solid choice**. For **advanced or high-demand applications**, consider **higher-end models (e.g., ASND61 series) or specialized valves** with built-in diagnostics.

---

### **Recommendation**

You need a **reliable, standard 2/2-way NC solenoid valve** for **basic pneumatic control**.

Your system operates at ** 10 bar pressure** and **moderate flow rates**.

You require **24V DC, 110V AC, or 220V AC compatibility** with easy wiring.

Budget and **low maintenance** are key factors.

The valve will be used in a **clean, industrial environment** (not extreme conditions).

You need **higher pressure or flow** (e.g., >10 bar or >300 L/min).

Your application requires **smart features, diagnostics, or digital communication**.

The valve will be exposed to **corrosive substances, high humidity, or extreme temperatures**.

You need **frequent switching cycles** (consider a **high-duty-cycle model**).

You require **food-grade, medical, or explosion-proof certification**.

- **ASCO Numatics ASND61-7-1** (higher flow, better sealing).

- **Festo MPYE series** (smart features, diagnostics).

- **SMC VQ2 series** (compact, high reliability).

- **Parker Hannifin Series 9** (industrial-grade, high durability).

For most **standard pneumatic automation tasks**, the **ASND51-7-1 is a well-proven and cost-effective solution**. Always verify **voltage, pressure, and flow requirements** before purchasing to ensure compatibility with your system.

Details:

All products are guaranteed to be working but may show signs of use if purchasing a used product. Call to use a shipping service other than the ones listed. ASCO ASND51-7-1 / ASND5171 USED DOUBLE CONVOLUTED AIR BELLOWSASND51-7-1. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

Sells new and surplus product develops channels to purchase such.

part #: asnd5171 prices

• $85.00-$150.00

specifications generapneumati:

• brand: Asco Numatics
• mpn: Asnd51-7-1
• part type: Hydraulic Pneumatic

returns generapneumati:

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

payments generapneumati:

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

shipping generapneumati:

• transit: 30-35 Days
• service: Standard
• type: Fixed
• class: Standard
• cost: $12.90

offer generapneumati:

• availability: In Stock
• options: Ship-to-home
• started: February 24, 2026
• sold: 0
• quantity: 1

general generapneumati:

• condition: Used
• Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Other Hydraulics Pneumatics

seller generapneumati:

• rating: 99.6%
• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 191596

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