Niezgodka Type 70 SKG Reducing Valve

The 746 Safety Relief Valve features a freely pivoting disc that ensures optimal alignment with the nozzle. Its design incorporates top guiding, an unobstructed seat bore, and full lift capability, guaranteeing the highest possible discharge rate for maximum protection of your plant.

The 'conventional' configuration is ideal for applications where the built-up pressure does not exceed 5%. Additionally, this conventional valve is suitable for systems with a consistent superimposed back pressure of up to 80%.

Specifications

• Sizes: 1" x 1.1/2" to 4" x 6"
• Connections: Flanged
• Head Type: Open Lever
• Materials: Carbon Steel body, Stainless Steel trim
• Disc: Stainless Steel
• Medium: Gases, Steam
• Set Pressure: 0.35 to 40 Barg (dependent on size)
• Temperature: -29 to +232 degC

Notes: This valve can also be supplied with a dome top and Viton disc. Please see the options below for more details.

The Altecnic / Caleffi 311 Safety Valve - 311560 is specifically designed for use in domestic hot water systems, providing essential protection for hot water cylinders, as well as in heating systems to safeguard boilers and other components. This valve is chosen based on the required set pressure. When system pressure increases and reaches the discharge threshold, the valve opens, releasing excess pressure to the atmosphere. This crucial function prevents the pressure from escalating to dangerous levels within the system, ensuring the safety of the boiler, hot water storage cylinder, and any personnel nearby.

Specifications

• Size: 3/4" x 3/4"
• Connections: BSP Female Inlet x BSP Female Outlet
• Materials: Brass
• Medium: Air and Water
• Set Pressure: 6 Barg
• Discharge Flowrate: 248.8 kg/hr
• Max Boiler Rating: 144.6 kW
• Temperature Range: +5 to +110 degC
• Product Code: 311560
• Notes: WRAS approved, CE marked

This high-quality safety valve ensures optimal performance and reliability in your heating system, making it a vital component for any domestic hot water setup.

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