PHD Inc. originally began manufacturing a line of small bore cylinders in 1957, under the Tom Thumb brand name. The NFPA line provides reliability and long-life characteristics in small bore cylinders, and the products continue to be a popular choice among manufacturers around the world due to features like low maintenance, field-reparability, various mounting styles and a wide range of options. For instance, heavy duty, air/oil tandem, back-to-back, double rod, and non-rotating versions are available.
More recently, PHD developed its super cylinder, the ISO/VDMA Series CV. The CV is available in eight bore sizes from 32 to 100 mm, with 20 to 100-mm standard strokes and lengths up to 1,000 mm. Construction includes rugged and lightweight anodized aluminum-alloy heads caps and tube, and a PTFE wear ring and built-in shock pads help ensure long cylinder life. Options include built-in port controls and cushions for superior speed and deceleration control, and a Rodlok option for dependable locking of piston rod. Many interchangeable mounting styles makes it suited for applications such as packaging, assembly machines, machine loading/unloading, and general industrial automation.