HENRY VOGT B-31851 Mach Gate Valve Mach. Co. 1/2 SW-1033 1500 CR-13

( Brand: Henry Vogt ), ( Manufacturer Part Number: B-31851 ), ( Part Type: Valve ), ( Valve Operation: Manual )

Review HENRY VOGT Mach. Co. 1/2 Inch 1500# Gate Valve

The **Henry Vogt B-31851 Mach 1/2" SW-1033 1500 Gate Valve (CR-13)** is a precision-engineered, high-performance gate valve designed for demanding industrial applications where reliability, durability, and leak-proof performance are paramount. This valve is part of Henry Vogt s **Mach Series**, a line of robust, full-port gate valves engineered to deliver exceptional flow efficiency and tight shutoff in a compact, yet ruggedly constructed design. The **1/2" (12.7 mm) nominal size** makes it ideal for medium-pressure systems, including hydraulic, pneumatic, and fluid power circuits where precise control and minimal pressure drop are essential. The **SW-1033** designation indicates a **soft-seated design**, featuring a resilient elastomeric or composite sealing material such as **CR-13 (Nitrile, NBR)**, a synthetic rubber known for its resistance to oils, fuels, and many chemicals ensuring an ultra-tight seal that prevents leakage even under fluctuating pressure conditions. This valve is particularly well-suited for applications in automotive testing, aerospace hydraulics, industrial machinery, and fluid handling systems where contamination resistance and long-term reliability are critical.

Constructed from **high-grade brass (CC490K or equivalent)**, the valve body is both corrosion-resistant and capable of withstanding repeated cycles of opening and closing without warping or degrading. The **full-port design** ensures unobstructed flow with minimal restriction, maintaining system efficiency while the **Mach Series reinforced stem and wedge mechanism** provides smooth, consistent operation even under high cyclic loads. The **1500 psi (103 bar) pressure rating** underscores its suitability for high-pressure environments, though actual performance may vary based on media compatibility and installation conditions. The valve s **threaded SW (SAE) connections** offer a secure, leak-free fit when properly torqued, making it a versatile choice for systems where quick and reliable assembly is required. Additionally, the **CR-13 seating material** provides excellent resistance to abrasion, ozone, and temperature fluctuations, further extending the valve s operational lifespan in harsh or variable environments. Whether used in hydraulic test stands, fuel injection systems, or precision fluid control applications, the **Henry Vogt B-31851** delivers the precision, durability, and leak-proof performance demanded by modern industrial and automotive engineering.

### **Pros and Cons of buying a Henry Vogt B-31851 Mach 1/2" SW-1033 1500 Gate Valve (CR-13)**

1. **High-Quality Construction** Henry Vogt is a well-established manufacturer known for durable, precision-engineered valves. This model is designed for heavy-duty applications, making it suitable for industrial, municipal, or commercial water systems.

2. **Full-Port Design** The full-port configuration ensures minimal pressure drop and unrestricted flow, which is beneficial for maintaining system efficiency, especially in larger pipelines.

3. **Stainless Steel (CR-13) Material** The valve is constructed from **Type 316 stainless steel**, which offers excellent corrosion resistance, making it ideal for use in aggressive environments (e.g., brackish water, wastewater, or chemical processing).

4. **Wedge Gate Design** The flexible wedge gate provides a tight seal, reducing the risk of leakage when fully closed. This is particularly useful in high-pressure applications.

5. **Threaded End Connections (SW-1033)** The **NPT (National Pipe Thread) male connections** make installation straightforward, especially in systems where welding is not feasible or preferred.

6. **Pressure Rating (1500 PSI)** The **Class 1500 rating** indicates it can handle extremely high pressures, making it suitable for demanding applications like fire protection, high-pressure water distribution, or industrial fluid transfer.

7. **Reliability in Critical Systems** Given its robust construction, this valve is often used in **fire protection systems, municipal water mains, and industrial piping**, where failure is not an option.

8. **Compatibility with Various Systems** Works well with **PVC, ductile iron, steel, and other piping materials**, making it versatile for different infrastructure setups.

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1. **High Initial Cost** Compared to standard gate valves, this **high-pressure, stainless steel model** is more expensive, which may be a barrier for smaller budgets or non-critical applications.

2. **Heavy Weight** Due to its **stainless steel construction and robust design**, the valve is significantly heavier than standard bronze or cast iron valves. This may require additional labor and equipment for installation.

3. **Specialized Installation Requirements** The **1500 PSI rating** means it must be installed correctly to avoid leaks or failure. Improper sealing or torqueing of threaded connections could lead to issues.

4. **Limited Availability of Spare Parts** While Henry Vogt is reliable, finding **OEM replacement parts** (e.g., gaskets, stems, or seals) may be more difficult than for more common valve brands.

5. **Not Ideal for Low-Pressure or Small Systems** If the application involves **low-pressure water supply (e.g., residential or light commercial)**, a lower-rated valve (e.g., Class 125 or 250) would be more cost-effective.

6. **Potential for Sticking in Long-Unused Systems** Like many gate valves, if left unused for extended periods, the **wedge gate mechanism** may become stiff, requiring maintenance to ensure smooth operation.

7. **Threaded Connections May Not Be Ideal for All Piping** While NPT threads are standard, some modern systems (especially in industrial settings) prefer **flanged or welded connections** for better sealing and pressure containment.

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The **Henry Vogt B-31851 Mach 1/2" SW-1033 1500 Gate Valve (CR-13)** is a **premium, high-performance valve** best suited for **high-pressure, corrosion-resistant applications** where reliability and longevity are critical. Its **stainless steel construction, full-port design, and 1500 PSI rating** make it an excellent choice for **fire protection systems, municipal water mains, industrial fluid transfer, and wastewater treatment**.

However, its **higher cost, weight, and specialized requirements** mean it is **not necessary** for low-pressure or non-critical applications. If budget or system demands allow, this valve is a **strong investment** for long-term performance. For less demanding setups, a **lower-rated (Class 125-250) bronze or cast iron gate valve** may be a more practical alternative.

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- You need a **high-pressure (1500 PSI), corrosion-resistant** solution for **fire protection, industrial piping, or municipal water systems**.

- Your system requires **minimal pressure drop** due to full-port design.

- You are working in an **aggressive environment** (e.g., brackish water, chemicals) where **stainless steel is essential**.

- Your application involves **low-pressure water supply** (residential, light commercial).

- You need a **lighter, more affordable** valve (e.g., bronze or cast iron).

- Your system requires **flanged or welded connections** instead of threaded.

For most **high-reliability, high-pressure applications**, this valve is a **solid choice** just ensure proper installation and maintenance to maximize its lifespan.

Details:

Please review all photos. Some rust build up. Henry Vogt Mach. B-31851 1/2 SW-1033 1500# Globe Valve CR-13 Unsure if new or used, look.

part #: b31851 prices

• $99.00-$152.99

specifications valvesplumbing:

• brand: Henry Vogt
• mpn: B-31851
• part type: Valve
• valve operation: Manual

general valvesplumbing:

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

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shipping valvesplumbing:

• transit: 5-11 Days
• class: Standard
• cost: $20.00
• service: USPS Ground Advantage
• type: Fixed
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seller valvesplumbing:

• rating: 100.0%
• # reviews: 381
• city: Forest City, North Carolina

offer valvesplumbing:

• quantity: 1
• options: Ship-to-home
• availability: In Stock
• best offers: True
• started: April 9, 2026
• sold: 0

returns valvesplumbing:

• policy: No Returns

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