Backflow Preventer for Laboratory Taps - Cat 5

The ARI STOBU Stop Valve, commonly referred to as a Crown Valve, is an essential component fitted to steam boilers, designed to effectively isolate the boiler steam from the associated processes or plant systems. Its name arises from its typical position at the top or "crown" of the boiler. The ARI STOBU Stop Valve is renowned for its reliability and performance in this crucial application.

Sizes: DN15 - DN100
Connections: Flanged PN40
Materials: Cast Steel (1.0619) body, stainless steel internals, graphite packing
Temperature: Max 180°C
Notes: Available in straight pattern or angle pattern.

**Product Specification** **Sizes Available:** ½", ¾", 1", 1¼", 1½", 2", 2½", 3" **Connections:** Flanged DIN or ANSI, Tri-Clamp (ASME BPE), DIN 11864-2 Form A, DIN 11851 / 11864-1 **Materials:** Stainless Steel (35.2) **Disk Options:** Metal, Viton or EPDM (FDA compliant) **Joints & Seals:** FPM, EPDM **Medium Compatibility:** Suitable for Steam, Gases, and Liquids **Set Pressure Range:** 0.1 to 16 Barg (depending on size) **Temperature Range:** -50°C to 200°C **Design Certification:** TUV **Notes:** The specified temperature range is applicable for valves featuring a Metal disk. Discover our extensive range of high-quality valves, designed for optimal performance across various applications, including steam, gases, and liquids. Crafted from durable stainless steel, our valves are built to withstand challenging environments, ensuring reliability and longevity. Perfect for both industrial and commercial use, these valves have a versatile set pressure range and are available in multiple sizes and connection types, making them suitable for a wide assortment of installations.

Features & Benefits

• Durable and high-quality bronze construction featuring integral seating surfaces.
• Kitemarked to BS EN 12288 for superior quality assurance.
• WRAS approved for use with wholesome (potable) water in sizes ranging from 1/2" to 2".
• Rated for a maximum temperature of 85ºC under WRAS approval.
• Inside screw pattern equipped with a non-rising stem for enhanced functionality.

Specifications

• Kitemarked to BS EN 12288:2010, ensuring compliance with industry standards.
• WRAS Approved Product featuring a non-rising stem.
• Equipped with FOCS 4PMV threaded bonnet for easy installation.
• Features a one-piece wedge for increased reliability.
• Taper threaded to BS EN 10226, formerly known as BS 21.
• Available with NPT threads (model 33XAT) in sizes from 1/2" to 4".
• Lockshield option (model 33XLS) available for sizes up to 2".

Pressure/Temperature Ratings

• Complies with BS EN 12288 PN20 Series B.
• Capable of withstanding up to 9 bar at 180ºC.
• Handles pressures of up to 20 bar from -10ºC to 100ºC.

This robust and reliable bronze valve is perfect for applications requiring compliance with UK standards and potent performance in plumbing systems. Discover the difference with our high-quality WRAS-approved products designed for safety and longevity.