Medenus RS251 Gas Pressure Regulator & Shut Off Valve

The Altecnic / Caleffi Relief Valve - Nut Inlet - A311501CST is designed for use in domestic hot water systems, providing essential protection for hot water cylinders and heating systems, including boilers and associated components. This relief valve is carefully selected based on the required set pressure to ensure optimum performance. As pressure rises within the system, the valve opens when the discharge pressure threshold is met, releasing excess pressure into the atmosphere. This critical function helps prevent hazardous pressure levels that could endanger the boiler, hot water storage cylinder, and personnel in the surrounding area.

**Specifications**

**Size:** 3/4" x 1/2" **Connections:** Loose Nut Connection Inlet x BSP Female Outlet **Materials:** Brass **Medium:** Air and Water **Set Pressure:** 6 Barg **Temperature Range:** +5 to +110 °C **Product Code:** A311501CST **Notes:** Compatible with 533002 CST and 533003 CST Inlet Control Groups, MK2 Caleffi Multibloc, and Range Tribune HE (Caleffi Control Gear) cylinders.

Optimise your heating system's safety by choosing the Altecnic / Caleffi Relief Valve - A311501CST for reliable and efficient performance.

The Emerson Kunkle Model 337 safety relief valve is designed to safeguard low to medium pressure, high volume blowers, compressors, conveying systems, and bulk hauling trailers and equipment.

As part of our service, we offer complimentary setting and testing of the valve, along with a pressure test certificate for your peace of mind.

**Key Features:**

- **High Capacity Design:** The large nozzle facilitates an impressive flow rate.
- **Enhanced Performance:** Flat bronze valve seats are precision-lapped for optimal functionality.
- **Easy Adjustability:** The warn ring allows for precise opening with minimal pre-opening or simmer.
- **Alignment Correction:** A pivot mechanism between the disc and spring compensates for misalignment and spring side thrust.
- **Manual Testing Convenience:** The Model 337 features a 'lift-pin' device for straightforward manual testing.
- **Robust Construction:** Comes standard with a bronze nozzle and disc, with optional stainless steel trim available.
- **Thorough Inspection:** Each valve undergoes rigorous testing and inspection for pressure settings and leakage.

**Specifications:**
Material: Body - Cast Iron / Nozzle - Bronze
Sizes Available: 2" to 3" (DN50 to DN80)
Connections: NPT Male Inlet x NPT Female Outlet or BSPT Male Inlet x BSPT Female Outlet
Orifice Sizes: 2" - 1.916 Sq. in. / 2.5" - 2.786 Sq. in. / 3" - 4.037 Sq. in.
Medium: Air
Pressure Range: 0.07 to 4.1 barg (1 to 60 psig)
Temperature Range: -29°C to 208°C (-20°F to 406°F)

The Valfonta S3 Straight Pattern Pressure Relief Valve is designed to effectively regulate upstream pressure, maintaining it at a predetermined set point. When the upstream pressure exceeds this set point, the valve opens proportionally, allowing for the controlled release of excess pressure.

Specifications

Sizes: 1/2" to 6" (DN15 - DN150)
Connections: BSP, NPT, Flanged
Materials: Nodular Iron, Carbon Steel, Stainless Steel, Bronze RG10
Trim: Stainless Steel
Joints & Seals: Virgin PTFE up to 180°C, PTFE & Graphite up to 220°C, Pure Graphite up to 350°C.
Medium: Liquids, Air, Neutral Gases, and Steam
Set Pressure: 0.5 to 20 Barg
Temperature Range: -30°C to +250°C
Approvals: (a) Shut-off capabilities: Class IV (Metal to Metal), Class VI (PTFE+Graphite Seat). (b) Available upon request: PEEK, NBR, EPDM seal, Stellite faced seat.

This premium pressure relief valve is ideal for a variety of applications, ensuring reliable performance and safety in high-pressure environments. Its durability and versatility make the Valfonta S3 an essential component for managing pressure effectively in industrial settings.