Altecnic / Caleffi 311 Series Safety Relief Valve 1/2" x 1/2" F x F 6 Bar - 311460

A Tri-Clamp gasket, also known as a Tri-Clover gasket, is a sanitary sealing element designed for use between two ferrules within a Tri-Clamp fitting system. These gaskets provide a leak-proof and hygienic seal, making them essential for piping systems in the food, beverage, pharmaceutical, and biotechnology sectors.

Our Tri-Clamp gaskets are specifically manufactured for the Food & Dairy, Chemical, and Pharmaceutical industries, where standard tube and pipe couplings are critical for operational efficiency.

All gaskets are FDA approved and are supplied as Type 2 Lipped as standard, facilitating easy assembly.

Elastomer Gaskets – EPDM, Silicone & VITON®

These gaskets are engineered to ensure a smooth transition throughout the bore when fully assembled. To maintain this quality, all our Elastomer gaskets are produced with a shore hardness of 75/85 IRHD. They comply with FDA regulations concerning rubber and rubber-like materials as specified in Title 21, paragraph 177.2660, and meet Class 1 material classification of the 3A sanitary standards in the USDA and standard 51 of the NSF. Our Elastomer range is also colour coded for easy identification: EPDM = Black/Blue, VITON® = Green, Silicone = White/Clear.

PTFE Solid (Teflon®)

The PTFE Solid gaskets are meticulously manufactured from solid billets of virgin PTFE, possessing a hardness of 60/65 shore D, ensuring precision components with low porosity properties. These gaskets are also produced in accordance with FDA regulations for Teflon® and fluorocarbon resin materials as outlined in Title 21, paragraph 177.1550, suitable for contact with foodstuffs. Additionally, they satisfy Class 1 material classification of the 3A sanitary standards, enabling us to provide custom sizes to meet specific customer requirements, with most requests for non-standard components readily accommodated.

PTFE Envelope (Teflon®)

Envelope gaskets feature a composite construction, combining a PTFE (Teflon®) outer layer with a VITON® filler as standard. This design ensures a seal with a degree of elasticity, delivering excellent sealing properties alongside flexibility. The PTFE component is specified to have a hardness of 60/65 shore D and is crafted from a solid billet of virgin PTFE (Teflon®). This construction minimises the risk of stress cracking in the product contact area, thereby enhancing the aseptic qualities of the sealing system. Envelope gaskets are solely manufactured from compounds that comply with FDA regulations for Teflon® and fluorocarbon resin materials, as stated in Title 21, paragraph 177.1550, suitable for food contact, and also meet the Class 1 material classification of the 3A sanitary standards. We offer special sizes to meet customer needs, and our manufacturing process allows for variations in filler materials and bespoke components as required.

The Altecnic / Caleffi 311 Safety Valve - 311480 are used in domestic hot water systems to protect the hot water cylinder and in heating systems to protect boiler and other components. The valve is selected for the required set pressure. As the pressure rises, when the discharge pressure is reached the valve opens and discharges to atmosphere, preventing the pressure within the system reaching levels which would be dangerous for the boiler, hot water storage cylinder and any personnel in the adjacent vicinity. 

Specification

Size: 1/2" x 1/2"Connections: BSP Female Inlet x BSP Female OutletMaterials: BrassMedium: Air and WaterSet Pressure: 8 BargDischarge Flowrate: 322.7 kg/hrMax Boiler Rating: 187.5 kWTemperature: +5 to +110 degCProduct Code: 311480Notes: WRAS approved, CE marked

Refrigeration overflow valves equipped with a damping system are a specialised type of differential pressure control valve, specifically designed for use in industrial refrigeration systems. The integrated damping system enhances valve performance by stabilising operation and preventing pressure fluctuations or oscillations, particularly in systems that experience rapid changes in load or pressure conditions.

Specifications

Sizes: 3/4"
Connections: Flanged & Butt Weld
Materials: Steel or Stainless Steel
Medium: Glycol-based cold brine refrigerants in accordance with EN 378 p. 1, including NH3, R134a, R290 (propane), R507, along with blends containing refrigerant oil and suitable for neutral, gas, and liquid media.
Set Pressure: 2 to 8 Barg
Temperature Range: -60 to +150 degrees Celsius (maximum, depending on the type)
Design: [Insert design details]
Notes: [Insert any additional notes]

This high-performance valve is essential for maintaining efficient and reliable operation in industrial refrigeration systems, ensuring optimal system functionality while minimising the risk of pressure-related issues. Ideal for professionals in the refrigeration sector seeking robust and dependable solutions.