FSDCDS - Sanitary Rupture Discs

The Altecnic / Caleffi 309 Pressure & Temperature Relief Valve - 309473CST is designed to effectively control and limit the temperature and pressure of hot water in domestic storage heaters. This essential safety device prevents water temperatures from exceeding 100°C, thereby eliminating the risk of steam formation. When the system reaches predetermined pressure or temperature thresholds, the valve discharges a sufficient amount of water into the atmosphere, ensuring that both temperature and pressure are maintained within safe operating limits. The valve's mechanism operates as follows: - **Temperature Control:** As the temperature in the storage heater rises, the thermostat compound within the temperature sensor, which is submerged in hot water, expands. This expansion causes a thrust pin to move, actuating the obturator and opening the valve. The valve is set to activate at temperatures exceeding 90°C. - **Pressure Control:** When pressure limits are reached, the obturator, which is opposed by a set spring, lifts and fully opens the outlet. The pressure setting is specifically configured according to the maximum allowable pressure within the system. As temperature and pressure subside, the valve automatically re-closes within designated tolerances.

Specifications

Size: 1/2"
Connections: Male x Ø 15 mm with compression fitting for copper pipe
Materials: DZR
Medium: Water
Set Pressure: 7 Barg
Discharge Rating: 10 kW
Temperature Setting: 90 degC
Probe Length: 97mm
Product Code: 309473CST
Notes: WRAS approved, CE marked

Optimise your domestic storage heating system's safety and efficiency with the Altecnic / Caleffi 309 Pressure & Temperature Relief Valve, providing peace of mind for your home.

**Product Specification: Niezgodka Type 75 Screwed Valve** **Available Sizes:** - 1/4 inch - 3/8 inch - 1/2 inch - 3/4 inch - 1 inch - 1 1/4 inch - 1 1/2 inch - 2 inch - 2 1/2 inch **Connections:** - Screwed BSPP or NPT **Material Options:** - Stainless Steel 316 or 304 **Disk Materials:** - EPDM - PTFE - Viton **Joints & Seals:** - Diaphragm options: EPDM, PTFE, or Viton **Suitable Media:** - Steam - Gases - Liquids **Inlet Pressure (Maximum):** - 25 Barg (for sizes 1/2 inch to 1 inch) - 16 Barg (for sizes 1 inch to 2 1/2 inch) **Outlet Pressure Range:** - 0.004 to 0.96 Barg (depending on size) **Additional Information:** This product is the screwed variant of the Niezgodka Type 75, designed for reliable performance in various applications. --- Optimise your operations with the Niezgodka Type 75 Screwed Valve, which offers durable construction and versatility in demanding environments. Ideal for steam, gases, and liquids, this valve ensures operational efficiency and reliability. Contact us today to learn more about how our high-quality valves can meet your specific needs.

The FSKRDS Sanitary Rupture Discs are a compression-loaded disc or reverse-acting disc, scored around the circumference. This disc has been designed to meet the high quality standards required by 3-A SSI, whose aim is to ensure public health through hygiene equipment. The FSKRDS model is particularly suitable for the Pharmaceutical, Food, and Biotechnology industries and represents the state-of-the-art for these sectors. This disc is entirely made of AISI 316L stainless steel (or other alloys upon request of the client). It’s smooth surface makes it particularly suitable for C.I.P. and S.I.P. treatments to maintain aseptic conditions. PTFE gaskets, which are certified in compliance with FDA and USP class VI, 3-A, and Eu 10/2011 regulations, facilitate the installation in Clamp fittings (sanitary, Tri-Clamp, Tank Connection). The operating pressure modifies the camber of the convex disc only when reverse pressure is reached. Upon reversal, the disc opens completely in a few milliseconds along the score line, thus preventing fragmentation from forming. The FSKRDS disc, with its innovative design, can be used with liquids only and can resist both vacuum and high pressure. 

Specification

Sizes: 1" (DN25) to 8" (DN200)

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

Rupture Pressure: 0,3 bar g - 10 bar g (depending on material and diameter)

Krl: 

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

Temperature: Gaskets in PTFE (max 265°C)

Operating Margin: 90% - Able to reach 95% depending on the service conditions

Fragmentation: No (will not break up on bursting)

Use under valve: Yes

Corrosion Resistance: Very good

Linings: Yes

Container: FSHTC 

Rupture Sensor: Electrical

ATEX EX II 2 GD Certification: Available

PED Certification (CE Stamp): Available

3-A Compliance: Available