Hattersley Fig 1732 Fixed Orifice Double Regulating Valve (FODRV)

**Specification** - **Size:** 1/2" (DN15) - **Connections:** BSP Female - **Handle Type:** Butterfly Handle - **Materials:** Bronze body, Chrome plated brass ball - **Medium:** Heating, Chilled water, Domestic hot and cold water (not suitable for gas) - **Maximum Pressure:** 25 Barg - **Maximum Temperature:** +110°C - **Product Code:** BVAL103020 - **Notes:** WRAS approved The Reliance Valves (RWC) Bronze Lever Operated Ball Valve, featuring a chrome plated brass ball, is specifically designed for water application. It allows for the isolation of fixtures, appliances, or areas within a building without the need to drain the entire system. With its lever operation, this robust quarter turn bronze ball valve ensures ease of use across various applications. It is suitable for heating, chilled water, as well as hot and cold potable water installations. To promote environmental sustainability and enhance water quality, these valves are provided without cosmetic chrome or nickel plating on the body. ### Features and Benefits: - **Increased Strength and Durability:** The bronze ball valve is specifically engineered for strength, making it ideal for installations in corrosive environments. - **Full Bore Design:** This feature reduces resistance to flow, enhancing performance. - **Versatile Options:** Available in both lever operated and butterfly handle versions to suit different needs. - **FBSP (ISO 7-1) Compatibility:** Designed for use with threaded pipe, it can also be utilized with other piping systems (threaded adapters must be supplied by the piping system manufacturer). Optimise your plumbing system with our reliable Bronze Lever Operated Ball Valve, ensuring efficiency and durability for your water management needs.

Six-Port, SilcoNert® 2000, Single Stage Cylinder Regulator for Reactive Analytical Applications

The CONCOA 420 Series regulator, treated with SilcoNert® 2000, is designed for primary pressure control of reactive or corrosive calibration mixtures and pure gases, providing an extremely inert wetted surface. The proprietary amorphous Silicon CVD coating delivers superior inertness and corrosion resistance compared to bare 316L stainless steel or other alloys. In its six-port configuration, the 420 Series is suitable for applications tolerating minor outlet pressure fluctuations or with gases stored below 500 PSIG (35 BAR). Maximum inlet pressure is at least 3000 PSIG (210 BAR), with optional configurations up to 4500 PSIG (310 BAR). Factory-installed options include single station manifold setup, purge, low-pressure alarm, or multiple inlets.

Features

• Metal-to-metal diaphragm seal prevents contamination

• CAPSULE® seat design with integral 360° filtration

• Front and rear panel mountable for flexible installation

• Spectrometric helium leak check verifies integrity

• Cleanroom assembly prevents contamination during installation

Specifications

• Max inlet pressure (bare body): 3000 PSIG (210 BAR); optional 4500 PSIG (310 BAR)

• Body & Bonnet: SilcoNert® 2000

• Gauges: 2 in (50 mm) stainless steel (bourdon tube not SilcoNert®)

• Seat: PTFE

• Filter: 10‑micron SilcoNert® 2000 mesh

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

• Diaphragm: SilcoNert® 2000

• Cv: 0.1

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

• Internal seals: PTFE

• Ports (bare body): 1/4 in FNPT

• Conformances: CGA G‑4.1, PED 2014/68/EU, ANSI/ASME B40.1, CRN OH5216.5

Excess flow valves are expertly designed to prevent pressure build-up in the space between the rupture disc discharge and the second safety device. As rupture discs function as differential pressure devices, it is crucial to avoid pressure accumulation to ensure proper disc activation at the specified bursting point. Excess flow valves are typically employed in conjunction with rupture discs and safety valves, or when multiple rupture discs are arranged in series. These valves automatically close when subjected to the flow from the rupture disc discharge. Available in ¼” and ½” sizes, excess flow valves can also be customised with T connectors, nipples, and pressure gauges upon request. All accessories for rupture discs are manufactured from high-quality stainless steel.

To request more information, please download our Rupture Disc Request Form and send the completed document to sales@flowstar.co.uk.