CONCOA 420 Series Line Regulator

The PREL104017 High Capacity Potable Water Pressure Relief Valve is designed to safely discharge water from the system when cold water over-pressurisation occurs in an unvented cylinder. This high-flow valve suits larger capacity systems, protecting them from the risks associated with excessive pressure. The Reliance Valves 104 Series High Capacity Potable Water Pressure Relief Valve features a pre-set and locked pressure setting; if the system exceeds this limit, the valve will lift from its seat, allowing water to discharge safely into the waste system. The outlet connection is one size larger than the inlet, ensuring that the valve can manage a high-capacity discharge effectively. This valve acts as the primary safety device in an unvented system. Various pressure settings are available, ranging from 3.5 to 8 bar, along with multiple connection sizes to facilitate flexible installation.

**Features and Benefits:**

• High-flow design ideal for larger capacity systems
• Quick removal of the single-piece cartridge for easy cleaning or replacement
• Diaphragm design enhances resistance to scale build-up
• Provides essential protection against over-pressurisation
• Diverse connection options allow for versatile installation
• Relief pressure range adjustable from 3.5 to 8.0 bar
• Designed exclusively for cold water applications

Specifications:

• Size: 1" x 1.1/4"
• Connections: BSP Female Inlet x BSP Female Outlet
• Materials: Hot pressed DZR Brass
• Medium: Cold water
• Set Pressure: 8 Barg
• Temperature: +140 °C
• Product Code: PREL104017

Introducing the Reliance Valves Aquasystem Stainless Steel Expansion Vessel, expertly designed for potable water applications. This essential component is built to manage the additional pressure within a water system as the water heats up and expands. By incorporating these expansion vessels, you can effectively prevent pressure build-up in both sealed heating systems and cold water systems, ensuring safe operational levels. Each vessel features a replaceable membrane that safeguards the water from corrosion or contamination, guaranteeing its safety for human consumption. The innovative design allows for easy servicing in situ, without the need to dismantle the vessel.

**Key Features and Benefits:**

• Stainless steel bolted flange ensures longevity and resists corrosion
• Extra-wide membrane opening reduces noise by minimising flow restrictions
• Internal membrane design prevents direct water contact with the steel shell, eliminating internal corrosion
• A comprehensive range available, from 2 to 5000 litres, catering to all application requirements
• All models come with a replaceable membrane to simplify servicing without removal
• Equipped with a pre-charge valve for easy air pressure adjustments
• Designed specifically for use with hot and cold water only

**Specifications:**

• Capacity: 3000 Litres
• Colour: Red
• Pre-Set Pressure (Bar): 4
• Maximum Pressure (Bar): 10.0
• Minimum Temperature: -10°C
• Maximum Temperature: 99°C
• Height: 2790mm
• Diameter: 1200mm
• Water Connection: DN65
• Product Code: XVES050200

**Materials:**

• Shell: Epoxy Coated Steel
• Membrane: EPDM
• Bolted Flange: Stainless Steel

**Standards and Approvals:**

• WRAS approved for vessels up to 1000 litres
• CE marked in accordance with Directive PED 97/23/CE
• TUV Certified
• Materials for 1000 - 5000 litre models comply with BS 6920

Enhance your water system’s efficiency and safety with the Reliance Valves Aquasystem Stainless Steel Expansion Vessel. Ideal for both commercial and domestic applications, it guarantees durability and easy maintenance.

### Product Specification **Sizes Available:** - 1/2" x 3/4" - 3/4" x 1" - 1" x 1.1/4" - 1.1/4" x 1.1/2" - 1.1/2" x 2" - 2" x 2.1/2" - 2.1/2" x 3" - 3" x 4" **Connections:** - Flanged DIN - ANSI **Materials:** - Carbon Steel (31.1) - Stainless Steel (31.2 & 31.7) **Disk Options:** - Metal - Viton - Nylon (depending on pressure rating) **Joints & Seals:** - NBR - FPM - EPDM (varies by model) **Compatible Media:** - Steam - Gases - Liquids **Set Pressure Range:** - 0.05 to 40 Barg (varies by size) **Operating Temperature:** - For carbon steel (31.1): -10 to 280°C - For stainless steel (31.2): -60 to 280°C - For stainless steel (31.7): -200 to 280°C **Design Certification:** - TUV Approved **Important Note:** The specified temperature range applies to valves fitted with a metal disk. For models 31.1 and 31.2, the temperature range may vary based on the body size. Optimised for performance and durability, our valves are perfect for managing steam, gases, and liquids within a broad range of industrial applications. Explore our collection to find the ideal solution for your specific needs.