A pneumatically operated, adjustable seat valve, designed to be used in conjunction with pressure-time dispense systems. It is suitable for use with a wide range of low viscosity Loctite products including cyanoacrylates. The valve body and stem are all PTFE to prevent premature curing. This valve is capable of delivering very small drop sizes even with low viscosity products. It can be used especially for CA and other low pressure applications up to 30 psi. NOTE: This valve is not recommended for use with Light Curing adhesives.