Hattersley Fig 3047W PN25 Swing Check Valve

Double oil filters, also known as duplex oil filters, are specialised filtration units designed for use in industrial refrigeration systems, particularly those employing ammonia (NH₃) or CO₂. They continuously eliminate impurities from the compressor oil while ensuring uninterrupted operation during filter maintenance or replacement.

A double oil filter features two parallel filter housings linked by a changeover valve or a three-way valve. This innovative setup enables the system to alternate between filters without the need to shut down the refrigeration system, ensuring optimal efficiency.

Specifications

• Sizes: 1" to 3" (depending on the model)
• Connections: Flanged
• Materials: Steel
• Medium: Glycol-based cold brine refrigerants EN 378 p. 1 such as NH₃, R134a, R290 (propane), R507, and blends with refrigerant oil, as well as neutral gas and liquid media
• Pressure Rating: PS 25, PS 40
• Temperature Range: -20 to +120 °C Max
• Design Features: Incorporates paper filters with a filtration fineness of 15 μm

Optimise your industrial refrigeration system's performance and reliability with our high-quality double oil filters, engineered for superior impurity removal and seamless operation.

Features & Benefits

• Resistant to dezincification
• Lightweight, compact, and straightforward to install and operate
• Enhanced leak protection
• Increased durability against damage during installation
• Available in sizes ranging from 1/2" to 2"
• WRAS approved for use in hot and cold water systems up to 85°C
• Compliant with BS EN 13547 standards

Specification

• UK End Connection: BS EN 10226-2:2005 (previously BS21 Taper)
• US End Connection: ANSI B1.20.1:1983
• Operator Type: Lever
• Specification: DZR Brass (CW602N) Body Ball Valve, adhering to BS EN 13547. This valve features a two-piece construction, a floating stainless steel SS304 ball, an anti blow-out stem, PTFE seats, and threaded ends with a PN25 rating.
• WRAS approved
• Suitable for use with Group 2 Gas, Group 1 and Group 2 Liquids as defined by the Pressure Equipment Directive 2014/68/EU, as amended.
• Not suitable for Group 1 Gases or unstable liquids.

Pressure/Temperature Rating

• Operating range: -10 to 100°C at 25 Barg
• At 120°C: 21.8 Barg

Technical Specifications

Sizes Available: 1/2" (DN15), 3/4" (DN20), 1" (DN25), 1.1/4" (DN32), 1.1/2" (DN40), and 2" (DN50) Connections: Female BSP Inlet x Female BSP Outlet Materials: Gunmetal Body, Bonnet: Plastic (PA6) for sizes up to DN32; from DN40 onwards, Gunmetal Disc: NBR Diaphragm & Seals Suitable Media: Gases and Liquids, including potable water, neutral non-viscous fluids, compressed air, nitrogen, and non-combustible gases. Please note: Not suitable for steam. Maximum Inlet Pressure: 16 Barg Outlet Pressure Range: 0.2 to 2 Barg Cv Range: [insert specific Cv range] Temperature Tolerance: Up to 100°C Certifications: PED 97/23/CE Category I Additional Features: Integrated gauge ports and an integral strainer. For optimal sizing, utilise our sizing calculator found in the TECHNICAL INFO section on the menu bar above.