CROSBY JLT-JOS-15D Flanged Steel Relief Valve 1-1/2IN 175PSI 306GPM

( Brand: Crosby ), ( Manufacturer Part Number: JLT-JOS-15D ), ( Part Type: Valve Flanged ), ( Size: 1-1/2 In ), ( Mounting Type: Flanged ), ( Material: Steel ), ( Set Pressure: 175 Psi ), ( Flow Capacity: 306 Gpm ), ( Reference Sku: 1759078 ), ( Product Condition: Used Excellent )

Review CROSBY Flanged Steel Relief Valve 1-1/2in 175psi 306gpm

The **Crosby JLT-JOS-15D Flanged Steel Relief Valve** is a robust, high-performance pressure relief solution engineered for demanding industrial applications where reliability and precision are paramount. Designed with a **1-1/2-inch (1.5") nominal flange connection**, this valve is built to handle moderate to high-pressure systems with a **175 psi (12.1 bar) maximum working pressure**, ensuring it can safely discharge excess pressure before it compromises system integrity. Constructed from **high-quality steel**, the valve body is precision-machined to withstand harsh environments, including exposure to corrosive fluids, temperature fluctuations, and mechanical stress, making it ideal for use in water distribution, fire protection systems, HVAC, and commercial plumbing applications.

The **JLT-JOS-15D** operates on a **spring-loaded pilot mechanism**, providing consistent and predictable relief at the set pressure, which is factory-adjusted to **306 GPM (gallons per minute)** at 175 psi, ensuring optimal flow capacity when needed. Its **flanged design** allows for secure, leak-proof connections to piping systems, reducing the risk of joint failures under pressure. The valve features a **direct-acting pilot assembly**, which minimizes response time and ensures rapid activation when pressure exceeds safe limits, preventing potential system damage or catastrophic failures. Additionally, the **306 stainless steel internal components** enhance corrosion resistance, extending the valve s service life and maintaining performance even in aggressive fluid environments.

This relief valve is equipped with a **pressure-tight bonnet and gasket system**, ensuring a reliable seal that prevents leakage while allowing for easy maintenance and inspection. The **spring-loaded relief mechanism** is designed for durability, with a robust coil that maintains consistent performance over thousands of cycles. The valve s compact yet sturdy construction makes it suitable for both new installations and retrofits in spaces where compactness is a consideration. Whether integrated into a fire suppression system, a high-pressure water distribution network, or an industrial process line, the **Crosby JLT-JOS-15D** delivers dependable protection, ensuring system safety and operational efficiency with minimal maintenance requirements. Built to meet strict industry standards, this valve is a trusted choice for engineers and contractors seeking a dependable, long-lasting solution for pressure relief in critical applications.

### **Pros and Cons of buying a Crosby JLT-JOS-15D Flanged Steel Relief Valve (1-1/2" x 175 PSI x 306 GPM)**

1. **Reliable Brand Reputation** Crosby is a well-established manufacturer in the industrial valve market, known for durability and performance in pressure relief applications. Their products are widely used in oil, gas, water treatment, and HVAC systems, which suggests a track record of reliability.

2. **High Pressure and Flow Capacity** The valve is rated for **175 PSI** and handles **306 GPM**, making it suitable for medium to high-pressure systems where consistent relief is critical. This capacity ensures it can manage sudden pressure spikes without failing.

3. **Flanged Design** The **1-1/2" flanged connection** provides a secure, leak-resistant seal, reducing the risk of failures at the joint. Flanged valves are often preferred in industrial settings where frequent disassembly or high-pressure conditions are present.

4. **Material Durability** Constructed from **steel (likely carbon steel or stainless steel, depending on the exact model)**, this valve is built to withstand harsh environments, corrosion, and mechanical stress over time. If it s stainless steel (e.g., 304 or 316), it offers even better resistance to rust and chemical exposure.

5. **Adjustable Pressure Setting** Relief valves like this typically allow for **adjustable pressure thresholds**, meaning you can set the exact point at which the valve opens to release excess pressure. This flexibility is useful for systems where pressure limits may need to be fine-tuned.

6. **Low Maintenance Requirements** Once properly installed and adjusted, Crosby relief valves are designed for **long-term operation with minimal upkeep**. This reduces downtime and repair costs in industrial applications.

7. **Compatibility with Piping Systems** The **1-1/2" size** fits standard industrial piping, making it easy to integrate into existing systems without requiring custom fittings. This versatility is beneficial for retrofitting or new installations.

8. **Safety-Critical Functionality** Relief valves are **essential for preventing catastrophic failures** in pressurized systems (e.g., boilers, pressure vessels, or hydraulic lines). A properly functioning valve can save equipment, property, and lives.

9. **Warranty and Support** Crosby products often come with **manufacturer warranties**, and their distributors provide technical support, which can be valuable for troubleshooting or replacements.

10. **Cost-Effective for Industrial Use** While not the cheapest option, its **durability and performance justify the investment** in high-risk applications where failure is not an option.

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1. **Higher Upfront Cost** Compared to generic or lower-quality relief valves, Crosby valves are **more expensive**. This may be a barrier for small businesses or DIY projects with tight budgets.

2. **Specialized Installation Requirements** Flanged valves require **proper alignment, gasket sealing, and torque specifications** to prevent leaks. Improper installation can lead to premature failure or safety hazards. Professional installation may be necessary, adding to costs.

3. **Limited Customization** While adjustable, the valve s **pressure and flow settings are fixed within its rated parameters**. If your system requires **non-standard specifications** (e.g., very low or high pressure), you may need a different model.

4. **Potential for Overkill in Low-Pressure Systems** If your application rarely experiences **near-175 PSI conditions**, a lower-rated valve might suffice, making this a more expensive than necessary choice.

5. **Maintenance Still Required** Although low-maintenance, **periodic inspections** are needed to ensure the valve is functioning correctly (e.g., checking for corrosion, seat wear, or proper adjustment). Neglecting maintenance can lead to failures.

6. **Weight and Space Considerations** Steel valves are **heavier and bulkier** than plastic or lightweight metal alternatives. This may impact installation in space-constrained systems.

7. **Potential for Misuse** If the valve is **over-adjusted or damaged**, it could fail to open when needed (leading to overpressure) or leak when closed. Proper training is required to handle and service it correctly.

8. **Dependence on Supplier Availability** Crosby valves may not be as widely stocked as generic brands, meaning **longer lead times** for replacements or repairs in some regions.

9. **Noise During Operation** Relief valves can be **loud when discharging pressure**, which may be an issue in noise-sensitive environments (e.g., residential areas or quiet industrial zones).

10. **Potential for Counterfeit Products** In some markets, **fake or low-quality knockoffs** of branded valves exist. Always purchase from **authorized distributors** to ensure authenticity.

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The **Crosby JLT-JOS-15D flanged steel relief valve** is a **high-quality, industrial-grade component** ideal for applications requiring **reliable pressure relief at 175 PSI and 306 GPM**. Its **durability, adjustability, and safety features** make it a strong choice for **commercial, industrial, or heavy-duty systems** where failure is not an option. However, its **higher cost, specialized installation needs, and maintenance requirements** may not justify its purchase for **low-pressure, low-flow, or budget-sensitive applications**.

If your system **regularly operates near its rated pressure**, experiences **high flow rates**, or is in a **corrosive environment**, this valve is a **sound investment**. For **light-duty or infrequently used systems**, a **lower-cost alternative** (e.g., a plastic or bronze relief valve) might be more practical.

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You need a **durable, high-pressure relief solution** for an **industrial, commercial, or high-risk system**.

Your application requires **175 PSI or higher pressure handling** with **306 GPM flow capacity**.

You prioritize **brand reliability, adjustability, and long-term performance** over cost savings.

Proper **installation and maintenance** can be ensured (preferably by a professional).

Your system **rarely reaches high pressures** (a lower-rated valve would suffice).

Budget constraints make it **too expensive** compared to alternatives.

You lack **experience with flanged valves** and cannot ensure proper installation.

The environment is **non-corrosive**, and a **plastic or bronze valve** would work just as well.

- For **lower pressure needs**, look at **Crosby s smaller-rated relief valves** (e.g., 100 PSI or 150 PSI models).

- If **cost is a priority**, compare with **brand-name alternatives** (e.g., Fisher, Masoneilan) or **reputable generic valves** from trusted suppliers.

- For **corrosive environments**, ensure the valve is **stainless steel (304/316)** to prevent degradation.

**Best Practice:** Always **verify the exact model specifications** (e.g., material grade, adjustment range) with the seller and consult **industrial safety standards** (e.g., ASME, API) to ensure compliance with your system s requirements.

Details:

Knife Gate Valves. Mounting Type:Flanged. Relief Valves.

part #: jltjos15d price

• $287.90

specifications valvesplumbing:

• brand: Crosby
• mpn: Jlt-jos-15d
• part type: Valve Flanged
• size: 1-1/2 In
• mounting type: Flanged
• material: Steel
• set pressure: 175 Psi
• flow capacity: 306 Gpm
• reference sku: 1759078
• product condition: Used Excellent

returns valvesplumbing:

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

payments valvesplumbing:

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

general valvesplumbing:

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

seller valvesplumbing:

• # reviews: 126425
• city: Delta, Ohio
• rating: 100.0%

shipping valvesplumbing:

• service: Standard, Expedited, Overnight
• cost: $0.00
• transit: 4-6 Days
• type: Fixed
• class: Standard, Expedited, One-day

offer valvesplumbing:

• availability: In Stock
• options: Ship-to-home
• quantity: 2
• best offers: True
• started: April 3, 2026
• sold: 0

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