Manual injection valves are ideal for applications that require operator control or injection of smaller sample volumes. Injection valves are a type of switching valve usually featuring an attached sample loop (a length of tubing and fittings that match the angle of the valve ports).

Select from single- or dual-mode valves. Single-mode injection valves are configured for rear loading and requires complete filling of the sample loop. Dual-mode injection valves are configured for front loading and allows either partial or complete filling of the loop. Dual-mode valve introduces sample by syringe through the needle port built into the valve shaft. Valves with MBB design creates a continuous flow between the load and inject positions to eliminate pressure transient shock to the system.