WESPC Temperature Regulator CH11620 For Perkins T4.236 and AT4.236

Application:

The CH11620 thermostat is calibrated for the 4.0-litre Perkins T4.236 and AT4.236 turbocharged diesels that sit at the heart of thousands of agricultural tractors (Massey Ferguson 390, 398, 699, Landini Legend 130), combine harvesters (MF 30, 40, Cebis 550), gensets (FG Wilson P27-5 to P55-5, Pramac GBW45), telehandlers (JCB 525-58), back-hoe loaders (JCB 3CX/4CX) and small marine auxiliaries. It bolts into the cast-aluminium outlet elbow on the cylinder-head coolant gallery and begins to open at 82 °C, giving full lift at 95 °C so the engine stays inside the 85-95 °C envelope needed for minimum fuel consumption and maximum oil life on these long-stroke four-cylinders.

Technical specifications:

Temperature range: start-to-open 82 ± 2 °C, fully open 95 °C, maximum lift 8 mm. Flange diameter 54 mm, overall height 42 mm, bypass pin length 12 mm. Brass valve body with stainless-steel guide and silicone-rubber seal rated −40 °C to +150 °C.

Material & performance features:

The valve disc is machined from high-purity CuZn39Pb3 brass for rapid heat transfer and corrosion resistance in glycol-based coolants. A PTFE-impregnated silicone seal prevents seepage when the valve is closed yet remains flexible after 2 000 h at 120 °C.

Interchange part numbers: 

PERKINS CH11620, 247-7133, 2477133; FG Wilson 10000-06627; LANDINI 247-7133; JCB 331/19930; CATERPILLAR 248-5513.