Hattersley FIG 4925 PN25 Butterfly Valve - Lever Operated

The Twin Plate Wafer Check Valve, also referred to as a dual plate or double door check valve, is a compact and efficient non-return valve specifically designed to facilitate flow in one direction while effectively preventing reverse flow.

Specification

Sizes: DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600

Connections: Wafer, Solid Lugged, or Flanged

Materials: Body & Plates: Bronze, Carbon Steel, Low Temperature Carbon Steel, Stainless Steel, Monel, Titanium, Hastelloy, Duplex

Seat: Metal, Viton, or Buna

Working Pressure: Up to 420 Barg (depending on the model)

Temperature: Up to 593°C (dependent on the materials)

Design: Fully compliant with API 594 standards

Notes: 100% manufactured in the UK

The CONCOA 414 Series five-port, bare brass barstock regulator provides dual-stage primary pressure control for ultra-high purity, non-corrosive, or liquefied gases. Two-stage regulation ensures stable delivery pressure despite cylinder depletion, making it ideal for applications requiring consistent flow. It can be installed directly on top-outlet cylinders or via a bracket with flexible hose. Features include metal-to-metal diaphragm seal, CAPSULE® seats with 360° filtration, pipe-away relief, helium leak-checked integrity, cleanroom assembly, captured vent bonnet, and front/rear panel mounting. Constructed from brass barstock body and bonnet, PTFE/PCTFE seats, 316L diaphragm, 10-micron sintered bronze filter, 2 in brass gauges, Cv 0.1, PTFE internal seals, 1/4 in FNPT ports. Max inlet pressure: 3000 PSIG (3500/4500 optional). Temperature range: -40°F to 140°F (-40°C to 60°C). Compliant with CGA G-4.1, ANSI/ASME B40.1, PED 2014/68/EU, CRN OH5216.5R2.

The Altecnic / Caleffi 309 Pressure & Temperature Relief Valve - 309473CST is designed to effectively control and limit the temperature and pressure of hot water in domestic storage heaters. This essential safety device prevents water temperatures from exceeding 100°C, thereby eliminating the risk of steam formation. When the system reaches predetermined pressure or temperature thresholds, the valve discharges a sufficient amount of water into the atmosphere, ensuring that both temperature and pressure are maintained within safe operating limits. The valve's mechanism operates as follows: - **Temperature Control:** As the temperature in the storage heater rises, the thermostat compound within the temperature sensor, which is submerged in hot water, expands. This expansion causes a thrust pin to move, actuating the obturator and opening the valve. The valve is set to activate at temperatures exceeding 90°C. - **Pressure Control:** When pressure limits are reached, the obturator, which is opposed by a set spring, lifts and fully opens the outlet. The pressure setting is specifically configured according to the maximum allowable pressure within the system. As temperature and pressure subside, the valve automatically re-closes within designated tolerances.

Specifications

Size: 1/2"
Connections: Male x Ø 15 mm with compression fitting for copper pipe
Materials: DZR
Medium: Water
Set Pressure: 7 Barg
Discharge Rating: 10 kW
Temperature Setting: 90 degC
Probe Length: 97mm
Product Code: 309473CST
Notes: WRAS approved, CE marked