The compact monoblocks can be delivered with needle valves and/or ball valves in double-block-and-bleed configuration. The valve arrangement depends on the application and the same applies to the length and material of the probe. With the model IBJ, a non-return valve is also integrated which prevents bi-directional flow during the injection process.
The manufacturing of the two instrumentation valves enables smooth and precise operation of the valves with low torque. Monoblocks with ball valves also have a redundant polymere-metal sealing system with a tested leak tightness in accordance with BS6755 / ISO 5208 leak rate A.