Heater hoses routing on s14 pics inside

[fliprayzin240sx]

Yup, I think they moved the valve internally to the heater core after 96. My 95 has this and my 97 didnt. It just stops coolant from flowing thru your heater core. No hot coolant flowing thru it, no heat. If you take the valve out, you'd have constant flow of hot coolant thru your core and depending on how old your AC is, it may not be able to overcome it.