A wide choice of models allow to choose the gauge hatch suitable for any installation .
All our models have the padlock housing , are cheap and the aluminium execution is always ready at stock .
 
Models 144 , 145 , 146 , 147 are manufactured in aluminium in sizes 4" , 6" , 8" .
Standard gasket is nitrile rubber .
Models 144 , 146 are gravity closing type with opening pressure of 44 mmWG .
Models 145 , 147 are pressure type suitable to max pressure of 500 mmWG .
ANSI 150 FF flanged connections are foreseen  for models 144 and 145 .
ANSI B2.1 (NPT) threaded connections are foreseen  for models 146 and 147 .

Models 242 , 243  are manufactured in carbon steel and stainless steel in standard sizes 4" , 6" , 8" (other sizes on request) . Standard gasket is p.t.f.e. .

Model 242 is gravity closing type with opening pressure of 165 mmWG .
Models 243 is pressure type suitable to max pressure of 0,5 barg