Refrigeration Quick Closing Valves

The Hattersley Fig 775 PN10 Automatic Air Vent safely removes trapped air from single or multi-boiler and calorifier systems, simplifying venting and saving time and costs. WRAS approved for closed circuits, with an optional ½" shut-off valve (specify when ordering Fig. 776).

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

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

Pressure/Temperature Rating: 10 bar at 120°C.

Four-Port, Stainless Steel Barstock, Single Stage Cylinder Regulator for High Purity Gas Applications

The CONCOA 322 Series single-stage regulator is designed for primary pressure control of high purity gases (up to grade 5.5) and mildly reactive gases. It is not suitable for toxic or highly corrosive gases. Single-stage regulators are recommended for applications that can tolerate small fluctuations in outlet pressure due to cylinder depletion, or where the inlet pressure is stable or below 500 PSIG (34 BAR).

Features

• 316L stainless steel diaphragm to prevent inboard diffusion

• CAPSULE® seat design with integral 360° filtration

• Low wetted surface area to reduce purge requirements

• Rear panel mount simplifies installation

• Spectrometric helium leak check ensures leak integrity

Specifications

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

• Body: 316L stainless steel barstock

• Bonnet: Chrome-plated, die-cast zinc

• Gauges: 2 in (50 mm) diameter stainless steel with plated case

• Seats: PTFE (first stage); PCTFE (second stage)

• Filter: Patented 10-micron 316 stainless steel mesh

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

• Diaphragm: 316L stainless steel

• Cv: 0.1

• Helium leak integrity: 1×10⁻⁸ 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

The FSDCDFA Forward Acting Rupture Discs are composite conventional discs formed by three parts: a slotted, perforated metal part, a seal membrane (usually in PTFE but also available in many other metallic or non-metallic materials) and a protection section. It is excellent for use with gas and liquids in static conditions and excellent for low pressures. FSDCDFA discs react to excessive pressure with total opening in a few milliseconds without fragmentation. They are therefore recommended for valve protection. Supports may be provided for vacuum or counter-pressure protection. Composite FSDCDFA rupture discs may also be used for simultaneous protection from pressure and vacuum. 

Specification

Sizes: 1/2" (DN15) to 40" (DN1000)

Materials: Stainless steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, Titanium

Rupture Pressure: 0.01 - 110 bar g (depending on material and diameter)

Krl: 

Tolerance: from +/- 5 % to +/- 20%

Temperature: Membrane in PTFE/PFA max 265°C, up to 480°C (depending on the membrane)

Operating Margin: up to 80%

Vacuum Support: Available

Fragmentation: No (membrane only)

Use under valve: Yes

Corrosion Resistance: Good - can be protected with a PTFE membrane

Linings: Yes

Container: FSHI/A, FSHI/P, FSHI/F, FSHTC 

Rupture Sensor: Electrical, Magnetic, Inductive, Optical 

PED Certification (CE Stamp): Available

ATEX EX II 2 GD Certification: Available