Altecnic / Caleffi 309 Series Pressure & Temperature Relief Valve 3/4" 90°C 7 Bar - 309570CST

The CONCOA 308 Series is an electrically-heated, single-stage regulator designed for high-flow carbon dioxide and nitrous oxide in laboratory applications. To prevent freeze-up caused by dry ice formation at high flows, it features three integral 50-watt heating cartridges, a primary thermostat for automatic temperature control, and a secondary safety thermostat cutout that heats the regulator seat directly. The 308 Series can be factory-configured with options such as single-station manifolds, purge, low-pressure alarms, or multiple inlets.

Features:

• Three 50W heaters maintain gas flows up to 350 SCFH (165 LPM)

• NEMA 4 housing for safe indoor/outdoor use

• 316L stainless steel diaphragm prevents inboard diffusion

• CAPSULE® seat design with 360° integral filtration

• Low wetted surface area reduces purge requirements

• Spectrometric helium leak-tested for integrity

Specifications:

• Max inlet pressure: 3000 PSIG (210 BAR); optional 3500 PSIG (240 BAR) or 4500 PSIG (310 BAR)

• Body & bonnet: Chrome-plated brass barstock

• Gauges: 2" (50 mm) plated case

• Seats: PTFE; PCTFE for higher-pressure options

• Filter: 10-micron sintered bronze

• Diaphragm: 316L stainless steel; Cv: 0.1

• Helium leak integrity: 1 × 10⁻⁸ scc/sec

• Electrical housing: NEMA 4; thermostat range: 95–120°F (35–49°C)

• Heaters: 3 × 50W; Power: 115V AC (100–127V 50/60Hz, 150W) or 230V AC (197–252V 50/60Hz, 150W)

• Internal seals: PTFE; Ports: 1/4" FNPT

• Compliance: Meets/exceeds CGA G-4.1, PED 2014/68/EU, CE (230V models), ANSI/ASME B40.1, CRN OH5216

Introducing the Rhodes 934 Sight Glass with Flap and Scale Plate, a sophisticated solution for monitoring liquid flow within pipelines. This innovative device features a pivoted internal flap that precisely indicates changes in flow rates, ranging from a gentle trickle to full flow conditions, as it effortlessly aligns with a graduated scale plate. Designed with a high-quality stainless steel flap that is electropolished, our sight glass enhances visibility even in murky liquids, making it ideal for various applications. The Rhodes 934 Sight Glass is versatile, accommodating both horizontal and vertical upward flows, and is available in a selection of materials as standard. Proudly manufactured in the UK, our sight glasses are produced using locally sourced castings, ensuring superior quality and reliability compared to many competitors who rely on components from overseas. **Product Specifications:** - **Sizes Available:** 1/2" to 4" - **Connections:** Butt Weld, Screwed, Flanged (most types available) - **Materials:** Stainless Steel body, Stainless Steel Flap and Scale Plate - **Maximum System Pressure:** Capable of handling full vacuum to 25 Barg - **Operating Temperature Range:** From -30°C to 250°C - **Certifications:** Fully compliant with PED regulations. Entirely manufactured in the UK. Choose the Rhodes 934 Sight Glass for a reliable, high-performance solution that ensures accurate flow monitoring in your pipeline systems.

The Valfonta M1 Steam Pressure Reducing Valve is a self-operated, bellows-sealed pressure reducing valve, expertly designed for applications involving steam, compressed air, gases, and liquids.

Specifications

Sizes: 1/2" to 6" (DN15 - DN150)
Connections: BSP, NPT, Flanged
Materials: Nodular Iron, Carbon Steel, Stainless Steel, Bronze RG10
Trim: Stainless Steel
Joints & Seals: EPDM, PTFE, NBR, PEEK (type depends on temperature)
Medium: Suitable for Liquids, Air, Neutral Gases, and Steam
Inlet Pressure (Max): 40 Barg (DN15-50) / 25 Barg (DN65-150)
Outlet Pressure Range: 0.03 to 16 Barg
Kv Range: 3.5 to 240 (m3/h)
Temperature Range: -40°C to +250°C
Approvals: PED 97/23/CE

This versatile valve is an ideal choice for various industrial applications, ensuring efficient pressure reduction for a multitude of mediums, thus enhancing operational safety and reliability. Upgrade your system with the Valfonta M1 Steam Pressure Reducing Valve for optimal performance.