Refrigeration Overflow Valves with Damping System

The CONCOA 312 Series is a five-port, chrome-plated brass barstock, dual-stage cylinder regulator designed for high-purity inert gas applications. It provides primary pressure control for non-corrosive, high-purity (up to grade 5.5) or liquefied gases. Its two-stage design reduces pressure fluctuations caused by supply cylinder depletion, making it ideal for applications requiring stable delivery pressure. Configurable at the factory, it can serve as a single-station manifold with options such as purge, low-pressure alarm, or multiple inlets.

Features:

• 316L stainless steel diaphragm prevents inboard diffusion

• CAPSULE® seat design with integral 360° filtration in both stages

• Verified helium leak integrity via spectrometric testing

Specifications:

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

• Body: Chrome-plated brass barstock; Bonnet: Chrome-plated die-cast zinc

• Gauges: 2" (50 mm) plated case

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

• Filter: 10-micron sintered bronze

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

• Cv: 0.1; Diaphragm: 316L stainless steel

• Helium leak rate: 1 × 10⁻⁸ scc/sec

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

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

Features & Benefits

• Dezincification resistant• Light, compact and easy to install and operate• Improved leak protection• More resistant to damage during installation• WRAS Approved for use on hot and cold water systems up to 85°C• Conforms to BS EN 13547• T-Handle sizes 1/2” to 1”• Lockshield sizes 1/2” to 2”

Specification

• UK End Connection: BS EN 10226-2:2005 formerly BS21 Taper.• US End Connection: ANSI B1.20.1:1983.• Operator: T-Handle/Spanner/Socket.• Specification: DZR Brass (CW602N) Body Ball Valve, in accordance to BS EN 13547, two-piece construction, Floating Stainless Steel SS304 Ball, Anti Blow-out stem, PTFE seats, Threaded Ends, PN25 Rated. WRAS approved.• Suitable for use on Group 2 Gas, Group 1 and Group 2 Liquids as defined by Pressure Equipment Directive 2014/68/EU, as amended.• Not suitable for use on Group 1 Gases or unstable liquids.

Pressure/Temperature Rating

• -10 to 100 degC - 25 Barg• 120 degC - 21.8 Barg

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