4087 - Exhaust Gas Temperature Valve

Features

● RELIABLE PROTECTION

● LONG LIFE

● SENSES 300-1400ûF

● VITON SEALS STAINLESS STEEL WELL

● MANUAL OR PNEUMATIC RESET

● EASE OF MAINTENANCE

Application

Operation

Actuation of the valve is caused by increasing temperature expanding the stainless steel well at a rate faster than that of Rod (2). Pushrod (3) moves toward the well, permitting the two Balls (12) to slip into a groove between Upper Piston (10) and Trip Plunger (8). This releases the piston which is spring loaded by Main Spring (7). The piston moves upward permitting the middle O-ring seal to move past the IN Port, connecting IN to VENT

Re-setting of the valve is accomplished by firmly depress-ing the top of Piston (10) after the well has been permitted to cool back down below the trip point.

2-WAY VALVE is closed in the operating or ÒsatisfiedÓ condition, and trips open when the set temperature is exceeded.

FOR TEMPERATURES from 300 to 1400ûF in 2 ranges.

VITON O-RING SEALS are standard for high tempera-ture resistance. The valve body is made of cast aluminum.

CORROSION RESISTANT stainless steel well is stan-dard to withstand hot exhaust gases.

EASY TO MAINTAIN - valve body and rod may be easily removed from well for service without removing the well from the exhaust piping.

REMOTE RESET is available with the optional Pneu-matic Reset which permits remote resetting of a valve which is mounted in a hot, inconvenient or inaccessible location.

Specifications

Maximum Pressure at IN Port............125 psi (860 kPa)
Maximum Pressure Outside Well..*1000 psi (6890 kPa) Pneumatic Reset:
___ Minimum Reset Pressure...............40 psi (276 kPa)
___ Maximum Pressure....................150 psi (1034 kPa)
Maximum Valve Body Temperature.........400ûF (200ûC)
Valve Body & Spool.........................................Aluminum O-ring
Seals.............................................................Viton
Well Material.....................................347 Stainless Steel
Net Weight..................................................2 lbs (0.9 kg)

*Pressure shown is maximum allowable. To obtain work-ing pressure, factors of safety should be applied as re-quired by appropriate codes or regulations. In certain adverse conditions, a corrosion or erosion allowance should also be made.