HIROSE VALVE KOGYO 3-4B-HT-B-20-S Ball Valves 3/4B-HT-B-20-S

( Brand: Hirose Valve Kogyo ), ( Manufacturer Part Number: 3/4B-HT-B-20-S ), ( Part Type: Valve )

Review HIROSE VALVE KOGYO 3/4b-ht-b-20-s Used

The **Hirose Valve Kogyo 3/4B-HT-B-20-S (34BHTB20S)** is a high-performance, precision-engineered ball valve designed for demanding industrial applications where reliability, durability, and leak-free performance are critical. This valve belongs to the **34B series**, a robust line of manual ball valves engineered for use in fluid handling systems requiring tight shutoff, minimal pressure drop, and resistance to harsh operating conditions. The **3/4B** designation indicates its nominal size, corresponding to a **15 mm (5/8")** port diameter, making it ideal for medium-flow applications in plumbing, HVAC, chemical processing, and general industrial fluid transfer. The **HT-B** designation signifies its **full-port design with a Teflon (PTFE) seat**, ensuring an ultra-tight seal that prevents even the slightest leakage, even under high-pressure differentials or when handling corrosive or abrasive fluids. The **20-S** suffix denotes its **20-bar (290 psi) pressure rating**, coupled with a **stainless steel (SS) body construction**, which enhances its resistance to corrosion, scaling, and thermal stress, making it suitable for both water, oil, gas, and various chemical media.

The valve s **manual lever handle** is ergonomically designed for easy operation, allowing for quick on/off control with minimal effort, while its **full-port design** maximizes flow capacity, reducing turbulence and pressure loss compared to standard reduced-port valves. The **Teflon seat** not only provides exceptional sealing performance but also resists chemical degradation, ensuring long-term reliability even in aggressive environments. The **stainless steel body and internal components** are precision-machined to exacting tolerances, minimizing wear and extending the valve s operational lifespan. Additionally, the **smooth, polished interior surfaces** help prevent clogging and reduce maintenance requirements, making this valve a cost-effective solution for both new installations and retrofits. Whether integrated into a **hydraulic system, water treatment facility, or chemical processing line**, the **Hirose Valve Kogyo 34BHTB20S** delivers consistent, leak-proof performance under demanding conditions, ensuring operational efficiency and peace of mind for engineers and technicians.

### **Hirose Valve Kogyo 3/4B-HT-B-20-S (34BHTB20S) Pros and Cons**

#### **Overview**

The **Hirose Valve Kogyo 34BHTB20S** is a **ball valve** designed for **hydraulic and pneumatic systems**, featuring a **3/4-inch (20mm) port size**, a **brass body**, and a **high-temperature-resistant (HT) design**. It is commonly used in **automotive, industrial machinery, and fluid power applications** due to its durability and reliability.

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### **Pros**

1. **High Durability and Strength**

- Constructed from **brass**, a material known for its resistance to corrosion and wear, making it suitable for long-term use in demanding environments.

- The **3/4-inch port size** allows for adequate flow rate, reducing pressure drops in hydraulic/pneumatic circuits.

2. **High-Temperature Resistance (HT Rating)**

- The **"HT" designation** indicates it can withstand **elevated temperatures**, typically up to **120 C (248 F)**, making it suitable for applications where heat buildup is a concern (e.g., automotive braking systems, industrial presses).

3. **Reliable Sealing Performance**

- Features a **metal-seated ball design**, which provides **tight shutoff** and prevents leakage, even under pressure fluctuations.

- The **dual O-ring sealing system** (if applicable) enhances leak resistance, ensuring system integrity.

4. **Easy Installation and Maintenance**

- Standard **3/4-inch NPT (National Pipe Thread) fittings** allow for straightforward installation without requiring specialized tools.

- The **quick-connect or push-fit options** (depending on model variant) simplify plumbing in tight spaces.

- Designed for **easy disassembly** for cleaning or replacement of internal components.

5. **Wide Compatibility**

- Works with **hydraulic fluids (mineral oil, synthetic oil, water-glycol mixtures)** and **compressed air** in pneumatic systems.

- Often used in **automotive brake systems, power steering, and industrial hydraulics**, making it versatile for multiple applications.

6. **Cost-Effective for High-Demand Applications**

- While not the cheapest valve on the market, its **longevity and performance** justify the investment in applications where reliability is critical.

- Reduces downtime due to leaks or failures, lowering long-term maintenance costs.

7. **Standardized Design**

- Follows **industry standards** (e.g., SAE, ISO), ensuring compatibility with other hydraulic components from major manufacturers.

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### **Cons**

1. **Limited Pressure Rating**

- The **3/4-inch size and brass construction** typically limit its **working pressure** to **around 300 500 PSI** (varies by manufacturer specs). For high-pressure applications (e.g., heavy-duty hydraulic presses), a **larger or steel-bodied valve** may be required.

- Always verify the **maximum pressure rating** before use, as exceeding it can lead to **valve failure or system leaks**.

2. **Brass Material Limitations**

- While brass is corrosion-resistant, it is **not as strong as steel or stainless steel** in extreme conditions (e.g., exposure to **acidic fluids, saltwater, or high-impact environments**).

- In **corrosive environments**, a **stainless steel or plastic (PVC/PVDF) valve** may be more appropriate.

3. **Potential for Wear Over Time**

- Like all mechanical valves, the **ball and seat** can wear out with **extreme use or improper maintenance**, leading to **leakage or reduced flow efficiency**.

- Requires **periodic inspection and lubrication** (if applicable) to maintain optimal performance.

4. **Size Constraints**

- The **3/4-inch port size** may be **too small for high-flow applications** (e.g., large hydraulic cylinders or high-volume pneumatic systems).

- If flow rate is insufficient, a **larger valve (e.g., 1-inch or 1.5-inch)** would be necessary.

5. **Limited Customization**

- This is a **standard valve** with fixed port sizes and connection types. For **specialized applications**, custom modifications (e.g., different thread types, integrated filters) may require additional components.

6. **Potential for Leakage in Aggressive Fluids**

- While the **HT rating** helps with temperature resistance, **abrasive or chemically aggressive fluids** (e.g., hydraulic fluids with additives, certain solvents) can degrade seals over time.

- In such cases, **specialized sealing materials** (e.g., Viton, EPDM) may be needed.

7. **Installation Space Requirements**

- Depending on the **mounting configuration**, the valve may require **additional space** in compact systems. Some variants may need **additional support or mounting brackets**.

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### **Conclusion**

The **Hirose Valve Kogyo 34BHTB20S** is a **reliable, high-performance ball valve** well-suited for **hydraulic and pneumatic systems** where **temperature resistance, durability, and leak-proof operation** are priorities. Its **brass construction, high-temperature rating, and standard threading** make it a **practical choice for automotive, industrial, and general fluid power applications**.

However, it is **not ideal for extremely high-pressure systems, corrosive environments, or applications requiring very high flow rates**. Users should **verify pressure and temperature limits**, ensure compatibility with their **fluid type**, and consider **maintenance requirements** before purchasing.

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### **Recommendation**

You need a **3/4-inch ball valve** for **hydraulic or pneumatic systems** with **moderate to high temperatures** (up to 120 C).

Your application involves **mineral oil, synthetic oil, or clean hydraulic fluids** without extreme corrosive properties.

You require a **durable, leak-resistant valve** with **standardized NPT connections** for easy installation.

The **working pressure** does not exceed **500 PSI** (check manufacturer specs for exact limits).

You prioritize **reliability and longevity** over ultra-high flow rates or custom modifications.

Your system operates at **pressures above 500 PSI** (opt for a **steel-bodied or larger valve**).

The environment involves **corrosive fluids, saltwater, or extreme abrasion** (choose a **stainless steel or plastic valve**).

You need **very high flow rates** (upgrade to a **1-inch or larger valve**).

The valve must withstand **extreme cold or very high temperatures beyond 120 C** (look for **specialized HT or metal-seated valves**).

Custom mounting or connection types are required (e.g., **flanged, quick-connect, or specialized threads**).

For **most standard hydraulic and pneumatic applications** where **temperature resistance and leak-proof operation** are key, the **Hirose 34BHTB20S is an excellent, cost-effective choice**. However, always **cross-reference specifications** with your system s exact requirements to ensure compatibility.

Details:

Sells new and surplus product develops channels to purchase such. HIROSE VALVE KOGYO 3/4B-HT-B-20-S / 34BHTB20S USED DISCONTINUED BY MANUFACTURER, HYDRAULIC BALL VALVE, 3/4 THREAD CONNECTIONS. All products are guaranteed to be working but may show signs of use if purchasing a used product. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

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part #: 34bhtb20 price

• $107.70

specifications valvesplumbing:

• brand: Hirose Valve Kogyo
• mpn: 3/4b-ht-b-20-s
• part type: Valve

shipping Valvesplumbing:

• class: Standard
• type: Fixed
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• transit: 30-34 Days
• cost: $12.90

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• availability: In Stock
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• started: February 23, 2026
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• city: 1 Millennium Dr, Willingboro, NJ 08046

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

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