Hattersley Fig 250CW PN16 Double Check Valve

**Four-Way Bench Mounted Drop Lever Gas Tap** Introducing the 900034 Four-Way Bench Mounted Gas Tap, designed with drop lever handles in vibrant yellow for quick identification. This important safety feature ensures that users can easily see if any taps have been inadvertently left in the 'on’ position, making it ideal for laboratory use. Widely found in thousands of educational labs, this gas tap is a popular choice for institutions. Crafted from durable solid brass, it features a male 3/8″ BSP thread for reliable connection. The gas tap is equipped with an integral anti-rotation pin that prevents twisting from the desk, enhancing stability and safety during use. Each tap comes with an installation template, ensuring a hassle-free and perfect fit. It also holds the esteemed British Gas Approval, accompanied by a comprehensive 5-year warranty for added peace of mind. **Specifications:** - **Part No:** 900034NG-WA - **Description:** Four-way, high-visibility drop lever gas tap with a fixed serrated nozzle. - **Applications:** Standard laboratory gas tap for Bunsen burner applications. Suitable for both natural and LPG gas usage. - **Construction:** All-brass body, coated with Rilsan plastic in white (RAL 9016). Identification coding conforming to DIN13792. - **Connection and Mounting:** 3/8” BSP male flat-ended shank, 60mm long with a back nut. Standard anti-rotation base with a location pin. Requires two mounting holes (17mm and 5mm in diameter) through the work surface; template provided. - **Service Compatibility:** Natural or LPG gases. - **Pressure and Flow:** Maximum working pressure of 20 – 25 Mbar. Flow rate at 20Mbar = 1 cubic metre/hour per nozzle. **Important Note:** The appliance should be used to size pipework, not the gas valve. Items are British Gas/BSI certified and should only be installed by qualified personnel. Enhance your lab's safety and efficiency with the 900034 Four-Way Bench Mounted Gas Tap.

The Hattersley Fig 776 ½" PN10 Automatic Air Vent C/W Shut-Off removes potentially dangerous trapped air, simplifying venting for single or multi-boiler and calorifier systems, saving time and costs. WRAS approved for closed circuits; shut-off option available.

Features & Benefits: Removes trapped air, simplifies venting, saves time/costs, WRAS approved, optional shut-off valve, conforms to BS EN 1074-4.

Specification: Brass body & cover, polypropylene float, EPDM seals, BSP parallel thread, shut-off option for ½".

Pressure/Temperature Rating: 10 bar at 110°C.

The CONCOA 405 Series four-port brass regulator provides secondary pressure control for ultra-high purity inert gases, ideal for point-of-use applications and precise delivery to instruments. It allows accurate monitoring and adjustment of outlet pressure while maintaining high gas purity.

Features

• Metal-to-metal diaphragm seal to prevent contamination

• CAPSULE® seat with integrated 360° filtration

• Pressure ranges from 0–15 PSIG up to 0–500 PSIG

• Front and rear panel mountable for flexible installation

• Pipe-away relief valve for safe venting

• Cleanroom-assembled to eliminate installation contamination

• Captured vent-capable bonnet prevents exposure in the unlikely event of diaphragm failure

• Helium leak integrity verified

Specifications

• Maximum inlet pressure: 3000 PSIG (210 BAR)

• Body and bonnet: Brass barstock

• Gauge: 2 in (50 mm) brass

• Seat: PTFE; Filter: 10‑micron sintered bronze

• Temperature range: -40° to 140 °F (-40° to 60 °C)

• Diaphragm: 316L stainless steel; Cv: 0.1 (≤50 PSIG/3.5 BAR) or 0.2 (>50 PSIG/3.5 BAR)

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

• Helium leak integrity: 1×10⁻⁹ scc/sec

• Conformances: CGA G-4.1, ANSI/ASME B40.1, PED 2014/68/EU, CRN OH5216