In the Spring Loaded Shut Off Nozzle, the needle moves axially and is held in the closed position by the force of the spring that is present in the Shut Off Nozzle. It is easy to assemble and very compact in design, making it adaptable to each machine. On top of that, it is an economical solution. https://shreejicorpindia.com/product/spring-loaded-shut-off-nozzle/