# Relief Valve - Watts M15 | Z21.22 - Pressure Relief

The **Relief Valve-Watts M15 | Z21.22** is a high-performance pressure relief valve designed for optimal performance in various industrial applications. This valve is engineered to provide reliable pressure relief, ensuring the safety and efficiency of your systems. Perfect for steam and thermal expansion applications, this valve is a crucial component for maintaining system integrity.

This **Relief Valve-Watts M15** is compatible with **Z21.22 m15 std** specifications. It offers reliable pressure relief up to 100 psi and a maximum temperature of 210°F. With a **htr. input temp. st’m. & therm. exp. wtr. b.t.u./hr.** rating of 205,000 c and a **press. steam. b.t.u./hr.** of 998,000, this valve is engineered for efficiency. The automatic reseating feature adds convenience and peace of mind, while the 3/4 40xl8 100210 design ensures a secure fit. The **3/4” 100lb** valve, model **40xl8**, from **Hubbell-Bryant** is a reliable choice for your needs.

-   **Reliable Pressure Relief:** Provides dependable pressure relief up to 100 psi.
-   **High-Temperature Resistance:** Operates efficiently at temperatures up to 210°F.
-   **Automatic Reseating:** Features an automatic reseating function for convenience.
-   **Durable Construction:** Built with quality materials for long-lasting performance.
-   **Wide Compatibility:** Compatible with **Z21.22 m15 std** specifications.

Trust the **Relief Valve-Watts M15 | Z21.22** for its reliability and performance in your industrial or automation systems. This valve, from **Ram Automations**, is designed to meet your pressure relief needs. For further information, contact us at [info@ramautomations.com](mailto:info@ramautomations.com).

## Details

- **Price:** 999.0 USD
- **Vendor:** Ram Automations
- **Type:** Industrial Automation > Valves > Relief Valves
- **Tags:** 40xl8, automatic reseating valve, Hubbell-Bryant, pressure relief valve, relief valve, steam valve, Watts M15, Z21.22

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| New | 999.00 USD | In stock |

## Images

- Relief Valve - Watts M15 | Z21.22 - Pressure Relief-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/relief-valve-watts-m15-z21-22)
> Updated: 2026-09-18