Niezgodka Type 24 Relief Valve

A Letter of Conformity (LoC) is an official document that verifies a product's compliance with established standards, regulations, or contractual obligations. This important certification is widely utilised across various industries, including manufacturing, engineering, construction, and international trade, ensuring that products meet necessary quality and safety benchmarks.

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

The Altecnic / Caleffi Relief Valve - Circlip Inlet - F0000477 is a vital component for domestic hot water systems. Designed to protect hot water cylinders and heating systems, this valve ensures the safety of boilers and related components. It is specifically chosen based on the required set pressure. When the pressure increases and reaches the predetermined discharge pressure, the valve automatically opens, releasing excess pressure into the atmosphere. This function helps to prevent potentially dangerous pressure levels within the system, thereby safeguarding both the boiler and the hot water storage cylinder, as well as ensuring the safety of nearby personnel.

**Product Specifications**

• **Materials:** Brass
• **Set Pressure:** 4.5 Barg
• **Product Code:** F0000477
• **Notes:** Compatible with MK3 Caleffi Multibloc

Improve the safety of your domestic water system with the Altecnic / Caleffi Relief Valve, providing dependable performance and peace of mind.