Faucet leaks traced to hot-cold duty the factory never tests: EN817 bench seals at 1.6/0.4MPa, holds 2.5MPa and cycles hot and cold programmably

Model: NL-CJSN-1

The problem

A faucet that passes a room-temperature spot check can still weep in the field once hot water, thermal deformation and repeated cycling get involved. Export orders face the full EN 817 sequence - upstream and downstream sealing, diverter sealing both ways and a 2.5MPa mechanical strength hold - and a workshop pressure gauge cannot reproduce it.

Capability

The bench covers the mechanical mixing valve test sequence of EN 817 sealing characteristics and mechanical strength under pressure, together with GB 18145-2014 ceramic disk faucets and GB/T 23447-2009 showers. Sealing: closed-valve upstream hold 1.6+/-0.05MPa for 60+/-5s; open-valve downstream hold 0.4+/-0.02MPa stepped down to 0.02+/-0.002MPa, 60+/-5s each; diverter sealed in both bath and shower directions, auto-reset diverters to EN 14506 with an EN ISO 3822-4 flow resistancer fitted. Strength: 2.5MPa (25bar) static hold on the closed upstream side, 60+/-5s, no residual deformation; downstream 0.4MPa dynamic or 0.4+/-0.04L/s, with and without flow controller. A hot-cold dual-temperature loop runs programmable alternating cycles. Pressure system supplies and holds static and dynamic pressure; digital indication, automatic timing and leak/deformation judgment.

Key specifications

• Application: mechanical mixing valve sealing, strength, diverter and hot-cold cycling tests
• Standards: EN 817 cl.8/9, GB 18145-2014, GB/T 23447-2009, EN 14506, EN ISO 3822-4
• Upstream sealing: 1.6+/-0.05MPa hold 60+/-5s, closed valve
• Downstream sealing: 0.4+/-0.02MPa stepped to 0.02+/-0.002MPa, 60+/-5s each
• Diverter: both flow directions; auto-reset to EN 14506 with EN ISO 3822-4 resistancer
• Strength: 2.5MPa (25bar) static hold 60+/-5s, no residual deformation
• Downstream strength: 0.4MPa dynamic or 0.4+/-0.04L/s, with/without flow controller
• Hot-cold loop: programmable temperature and cycle count, automatic switching
• Control: PLC + HMI, digital pressure display, automatic timing and judgment

Applications

Full-type and 100% inspection at faucet plants; EN 817 incoming verification for export orders; ceramic cartridge and diverter supplier qualification; third-party laboratory commissioned testing

About the manufacturer

Guangdong Endurance Electronic Equipment Co., Ltd provides non-standard customization, drawing confirmation, factory acceptance, on-site installation and commissioning, operation training and lifetime technical service; 12-month warranty and lifetime spare parts supply. Tel: 0760-88500902 / 13416787649. Web: en.zsnaili.com.