GEORG FISCHER TYP-314 Manual Diaphragm Valve Dn Pvc Typ 3/4

( Brand: Georg Fischer ), ( Manufacturer Part Number: TYP-314 ), ( Part Type: Valve Manual ), ( Suitable Media: Water ), ( Valve Operation: Manual ), ( Country Of Origin: Switzerland )

Review GEORG FISCHER Qty Manual Diaphragm Valve Typ 314 3/4 Inch Dn Pn Pvc

The **Georg Fischer Typ-314 Manual Diaphragm Valve (DN 20, 3/4") in 10" PVC** is a robust and versatile flow control solution designed for demanding applications in industrial, municipal, and commercial water systems. This valve belongs to the renowned Typ-314 series, renowned for its reliability, durability, and ease of operation, making it an ideal choice for controlling water flow in both potable and non-potable systems. Constructed from high-quality **10" (100 mm) unplasticized polyvinyl chloride (uPVC)**, the valve body is engineered to withstand significant pressure fluctuations, chemical exposure, and environmental stressors, ensuring long-term performance even in harsh conditions. The **manual diaphragm mechanism** allows for precise and smooth flow regulation, with a simple lever handle that provides tactile feedback, enabling operators to quickly and accurately adjust the valve s position fully open, fully closed, or any intermediate setting with minimal effort. The diaphragm itself is crafted from a resilient elastomeric material, designed to resist abrasion, cavitation, and chemical degradation, thereby extending the valve s operational lifespan while maintaining consistent sealing performance.

This valve is particularly well-suited for applications requiring tight shut-off, such as in fire protection systems, irrigation networks, or water treatment facilities, where leak-free operation is critical. The **DN 20 (3/4")** size offers a balanced flow capacity, making it suitable for medium to low-flow applications where precise control is necessary without compromising system efficiency. The **threaded connections** (either male or female, depending on configuration) ensure a secure and leak-proof fit, while the valve s compact design allows for easy installation in tight spaces, whether in underground piping systems, above-ground manifolds, or within confined mechanical rooms. Additionally, the Typ-314 s **non-corrosive PVC construction** eliminates the risk of galvanic corrosion, making it compatible with a wide range of piping materials, including PVC, PE, and even metallic systems where appropriate adapters are used. For added convenience, the valve is equipped with a **standardized mounting orientation**, ensuring compatibility with existing piping layouts and reducing installation time.

Beyond its functional advantages, the Georg Fischer Typ-314 manual diaphragm valve is engineered with **safety and maintenance in mind**. The diaphragm s self-cleaning design minimizes the buildup of sediment or debris, reducing the frequency of required maintenance, while the valve s transparent or semi-transparent body (available in certain configurations) allows for easy visual inspection of internal components. In the event of servicing, the valve s modular design enables quick and straightforward disassembly, with replaceable parts such as the diaphragm, seat, and O-rings readily available from Georg Fischer s extensive distribution network. This modularity not only enhances reliability but also supports cost-effective long-term ownership by reducing downtime and replacement costs. Whether deployed in a municipal water distribution network, a commercial building s plumbing system, or an industrial process where precise flow control is essential, the Typ-314 manual diaphragm valve delivers a dependable, efficient, and low-maintenance solution that aligns with the highest standards of performance and durability.

### **Pros and Cons of buying a Georg Fischer Typ-314 Manual Diaphragm Valve (DN 20, 10 Bar, PVC)**

#### **Pros**

1. **High Quality and Durability**

Georg Fischer is a well-known brand in the plumbing and industrial valve industry, known for producing reliable and long-lasting products. The Typ-314 diaphragm valve is designed for robust performance in various applications, including water, wastewater, and chemical processing.

2. **Corrosion Resistance**

The valve is made of **PVC (Polyvinyl Chloride)**, which is highly resistant to corrosion, chemicals, and abrasion. This makes it suitable for use in aggressive environments where metal valves would degrade over time.

3. **Leak-Proof Operation**

Diaphragm valves are designed to provide a tight seal when closed, preventing leaks even under pressure. This is particularly useful in applications where containment is critical, such as in chemical plants or water treatment facilities.

4. **Easy Maintenance**

The diaphragm is replaceable, allowing for straightforward maintenance without needing to replace the entire valve. This reduces downtime and repair costs in the long run.

5. **Wide Range of Applications**

The valve is suitable for **water supply, irrigation, wastewater treatment, chemical transfer, and food processing**, making it versatile for different industries.

6. **Manual Operation (No Power Required)**

Since this is a **manual diaphragm valve**, it does not require electricity or compressed air, making it ideal for remote or off-grid locations where power supply may be unreliable.

7. **Standardized Sizing (DN 20)**

The **DN 20 ( inch)** size is common in many plumbing and industrial systems, ensuring compatibility with existing pipelines.

8. **Pressure Rating (10 Bar)**

The **10-bar (145 psi) pressure rating** allows it to handle moderate to high-pressure applications without risking failure.

9. **Cost-Effective for Medium-Duty Use**

Compared to stainless steel or metal valves, PVC valves are generally more affordable while still providing reliable performance in non-corrosive environments.

10. **Compliance with Industry Standards**

Georg Fischer products typically meet **international standards (e.g., EN, DIN, ANSI)**, ensuring reliability and regulatory compliance in most markets.

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#### **Cons**

1. **Limited Temperature Resistance**

While PVC is strong, it has a **lower temperature tolerance** (typically ** 10 C to 60 C**). If the application involves extreme heat or cold, a different material (e.g., PP, PVDF, or metal) may be required.

2. **Not Suitable for Highly Abrasive or Sharp Particles**

Although PVC is durable, **very abrasive or sharp particles** in the fluid can damage the diaphragm or internal seals over time, reducing lifespan.

3. **Lower Strength Compared to Metal Valves**

While PVC is strong, it is **not as structurally robust as metal valves** (e.g., brass, stainless steel, or cast iron). In high-impact or seismic zones, a metal valve may be more appropriate.

4. **Potential for UV Degradation (If Exposed to Sunlight)**

PVC can degrade when exposed to **prolonged UV radiation**, which may weaken the material over time. If installed outdoors, additional protection (e.g., coating or shielding) may be needed.

5. **Higher Cost Than Basic Plastic Valves**

While still affordable, the **Georg Fischer Typ-314 is more expensive than generic PVC valves** due to its brand reputation and quality engineering.

6. **Manual Operation Requires Physical Effort**

Since it is **manually operated**, large or heavily pressurized systems may require significant force to open or close, which could be inconvenient in some applications.

7. **Limited Availability of Spare Parts**

While the diaphragm is replaceable, **long-term availability of genuine Georg Fischer parts** may be an issue in some regions, potentially increasing maintenance costs.

8. **Not Ideal for High-Flow Applications**

The **DN 20 size limits flow capacity**, making it unsuitable for high-volume applications where larger valves (e.g., DN 50 or DN 80) would be more efficient.

9. **Potential for Leaks Over Time**

While diaphragm valves are generally leak-proof, **seal degradation** from prolonged use or improper maintenance can lead to minor leaks, requiring periodic checks.

10. **Not Suitable for Vacuum Applications**

PVC valves are not designed for **vacuum conditions** and may not perform reliably in systems where negative pressure is present.

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### **Conclusion**

The **Georg Fischer Typ-314 Manual Diaphragm Valve (DN 20, 10 Bar, PVC)** is a **reliable, corrosion-resistant, and low-maintenance** solution for **medium-pressure, non-corrosive fluid control** in applications such as water supply, irrigation, and light industrial processes. Its **durability, ease of maintenance, and leak-proof operation** make it a strong choice for environments where PVC is suitable.

However, it is **not ideal for extreme temperatures, highly abrasive fluids, high-impact applications, or vacuum conditions**. Additionally, its **manual operation and limited size** may restrict its use in high-flow or automated systems.

If your application involves **moderate pressure, non-corrosive fluids, and a need for a durable yet affordable valve**, this valve is an **excellent purchase**. If your system requires **higher temperatures, abrasive media, or extreme pressure conditions**, a **metal or reinforced plastic valve** (e.g., PP, PVDF, or stainless steel) would be a better alternative.

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### **Recommendation**

You need a **reliable, corrosion-resistant valve** for **water, irrigation, or light industrial use**.

Your system operates within the ** 10 C to 60 C temperature range**.

You require a **leak-proof, manually operated valve** without power dependency.

The **DN 20 size** fits your pipeline requirements.

You prefer a **brand-known for quality and longevity** over generic alternatives.

Your application involves **extreme temperatures, abrasive particles, or vacuum conditions**.

You need a **larger flow capacity** (consider DN 25 or DN 50).

Your system requires **automation or electric actuation**.

You operate in a **highly corrosive or chemically aggressive environment** (e.g., strong acids, solvents).

For most **residential, agricultural, or light commercial water control systems**, this valve is a **solid, cost-effective choice**. For **industrial or high-stress applications**, evaluate whether a **metal or reinforced plastic valve** would be more appropriate.

Details:

Removed from an R.O. Most are in very good condition. QTY 3 - Georg Fischer Manual Diaphragm Valve typ 314 1 DN 20 PN 10 PVC, Item is used.

part #: typ314 prices

• $23.00-$49.95

specifications valvesplumbing:

• brand: Georg Fischer
• mpn: Typ-314
• part type: Valve Manual
• suitable media: Water
• valve operation: Manual
• country of origin: Switzerland

seller valvesplumbing:

• city: Mound, Minnesota
• # reviews: 14391
• rating: 99.9%

shipping valvesplumbing:

• carrier: UPS, FedEx, USPS
• transit: 2-6 Days
• service: UPS Ground Saver, FedEx Ground Economy, USPS Priority Mail
• cost: $7.55
• class: Economy, Expedited
• type: Calculated

general valvesplumbing:

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

returns valvesplumbing:

• time: 60 Days
• paid by: Buyer
• policy: Returns Accepted
• method: Money back

payments valvesplumbing:

• credit card: Visa
• wallet: Google-pay
• other

offer valvesplumbing:

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

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