A005 Pilot Operated Pressure Reducing Valve

Explore our extensive selection of Broady Relief Valves, designed to meet your pressure regulation needs.

**Medenus S50 Gas Safety Shut-Off Valve Description** The Medenus S50 Gas Safety Shut-Off Valve is designed to swiftly terminate gas flow when the outlet pressure in the regulation section either exceeds or falls below predetermined safety thresholds. To ensure accurate monitoring, the outlet pressure is conveyed to the SSV control device via a dedicated measurement line. As pressure changes occur, the diaphragm within the control device adjusts accordingly, activating the shut-off mechanism. Should the outlet pressure dip below the lower switch-off point or surge above the upper switch-off point, the switch socket linked to the SSV diaphragm will shift to the disengaging position. This action releases the SSV screw spindle, allowing the closing spring to press the SSV valve plate firmly against the valve seat, effectively sealing off the gas flow with precision. It’s important to note that the SSV can only be manually opened and locked in the open position. For this to occur, the outlet pressure at the measuring point must be reduced below the upper response pressure or increased above the lower response pressure by at least the required re-engaging differential amount (Δp). The SSV is suitable for use in either functional class A (with diaphragm rupture protection) or class B (without diaphragm rupture protection), in accordance with specific national regulations. Additionally, users have the option of integrating a remote display indicating when the SSV is in the “CLOSED” position, as well as a manual and remote release feature that operates both during normal power and in the event of a power outage. **Specifications** - **Sizes**: 1", 1.5" & 2" - **Connections**: Female BSP Inlet x Female BSP Outlet - **Medium**: Gas - **Operating Pressure**: 3 Barg - **Release Mechanism**: Low pressure and high pressure - **Installation Notes**: Can be fitted in any orientation, ensuring a gas-tight zero position. This robust and reliable gas safety shut-off valve is an essential component for ensuring safe gas management in various applications.

The Altecnic / Caleffi 253 Solar Safety Valve - 253043 is designed to effectively manage pressure within the primary circuits of solar heating systems. This valve is selected based on the required set pressure. As system pressure increases, the valve will open upon reaching the designated discharge pressure, releasing excess pressure to the atmosphere. This mechanism prevents harmful pressure levels that could damage solar collectors and other components within the system.

Specifications

• Size: 1/2" x 3/4"
• Connections: BSP Female Inlet x BSP Female Outlet
• Materials: Chrome-Plated Brass
• Medium: Water, Glycol Solutions (Maximum Glycol Percentage: 50%)
• Set Pressure: 3 Barg
• Temperature Range: -30 to +160 °C
• Product Code: 253043
• Certification: CE marked

Enhance the safety and efficiency of your solar heating system with the Altecnic / Caleffi 253 Solar Safety Valve, a reliable choice for maintaining optimal pressure levels.