Control Devices ST25-1A175 Brass Soft Seat Safety Valve 175psi 1/4 NPT

Description

Product Overview

The Control Devices ST25-1A175 is a precision‑engineered brass safety valve designed for demanding industrial environments. With a preset relief pressure of 175 psi and a generous flow capacity of 157 cfm, this valve quickly vents excess pressure to protect downstream equipment. Its soft‑seat design, crafted from high‑grade brass, ensures a tight seal while minimizing wear, and the music‑wire spring provides consistent performance over a wide temperature range. The valve is rated for a maximum operating temperature of 250 °F, making it suitable for high‑heat applications such as oil‑field processing, chemical plants, and power generation facilities. The 1/4 NPT threaded inlet incorporates Vibra‑Seal thread‑lock technology, guaranteeing a leak‑free connection even under vibration. ASME safety certification, along with UV and NB marks, confirms compliance with rigorous industry standards.

Usage

Designed for versatility, the ST25-1A175 excels in hydraulic and pneumatic systems where pressure control is critical. It is ideal for protecting compressors, pumps, and reactors from over‑pressure events that could cause costly downtime or safety hazards. The valve’s compact dimensions (2 × 1 × 1 inches) allow easy installation in tight spaces, while its lightweight construction (0.01 oz) simplifies handling and reduces overall system weight. Engineers often specify this valve in high‑temperature pipelines, steam condensers, and gas‑handling equipment where reliable pressure relief is mandatory. The 1/4 NPT inlet fits standard fittings, enabling quick integration into existing piping networks without the need for custom adapters. Its corrosion‑resistant brass body ensures long‑term durability in aggressive media, including saline water, acidic solutions, and oil‑based fluids.

Why Choose Us

Control Devices brings more than four decades of expertise in valve technology, and the ST25-1A175 reflects that heritage of quality and innovation. Each valve undergoes rigorous testing, including pressure cycling, temperature endurance, and leak verification, to guarantee performance that meets or exceeds ASME standards. Our commitment to customer satisfaction includes responsive technical support, detailed installation guidance, and a comprehensive warranty that covers manufacturing defects. By selecting this valve, you benefit from a product that combines robust materials, precise engineering, and proven reliability—attributes that translate into lower maintenance costs and increased system uptime. Additionally, our global distribution network ensures rapid delivery, so you can keep projects on schedule.

Key Features

• Preset 175 psi relief pressure with 157 cfm flow for rapid pressure reduction.
• Brass soft‑seat construction provides corrosion resistance and long service life.
• 1/4 NPT inlet with Vibra‑Seal thread lock ensures a secure, leak‑free connection.
• Operates safely up to 250 °F, suitable for high‑temperature industrial applications.
• Backed by dedicated technical support and a comprehensive warranty for peace of mind.

FAQ

What is the maximum temperature this valve can handle?

The ST25-1A175 is rated for continuous operation up to 250 °F, making it appropriate for many high‑temperature processes.

Can this valve be used with corrosive fluids?

Yes. The brass body and music‑wire spring are selected for excellent resistance to corrosion from saline, acidic, and oil‑based media.

Is the valve compatible with standard NPT fittings?

Absolutely. The 1/4 NPT threaded inlet matches common industry fittings, allowing straightforward installation without special adapters.

What certifications does this valve hold?

The valve carries ASME safety certification along with UV and NB marks, confirming compliance with recognized safety and quality standards.

How does the Vibra‑Seal thread lock improve performance?

Vibra‑Seal thread lock provides a vibration‑resistant seal that prevents loosening and leakage, even in high‑vibration environments such as compressors and pumps.