Niezgodka Type 84 Sustaining Valve (Low Pressure)

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

The CONCOA 435 Series regulator provides secondary pressure control for ultra-high purity inert gases, including non-corrosive and liquefied gases. Rated to full cylinder pressure, it’s ideal for point-of-use control in high-purity gas systems. Features include metal-to-metal diaphragm seal, CAPSULE® seats with 360° filtration, pipe-away relief, cleanroom assembly, helium leak-checked integrity, captured vent bonnet, and front/rear panel mounting. Constructed from brass barstock body and bonnet, PTFE seat and internal seals, 316L stainless steel diaphragm, 10-micron sintered bronze filter, 2 in brass gauge, Cv 0.1–0.2, 1/4 in FNPT ports. Temperature range -40°F to 140°F (-40°C to 60°C). Complies with CGA G-4.1, ANSI/ASME B40.1, PED 2014/68/EU, and CRN OH5216.

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