New package for Belleville spring permits rate change, easy disassembly

A spring package, with grooves to hold the spring washers at the inner and outer edges, reduces hysteresis to a minimum. Three-segment retainers permit easy disassembly so that the spring rate can be changed

Packless valve with all-metal seal handles wide temperature, pressure range

A durable line valve utilizes stacked metal disks to seal off an inlet port. No packing or shaft sealing is needed, and the valve operates satisfactorily over a wide temperature and pressure range

Improved fluid control valve extends diaphragm life

Wear resistance of flexible diaphragms in fluid control valves is increased by incorporating a soft rubber washer at the bottom of the piston, a flexible buffer between the diaphragm and the valve seat, and a fluid feedback arrangement. The stress and wear of components at the valve seat are minimized

Valve designed with elastic seat

Absolute valve closure is accomplished by a machined valve with an axially annular channel which changes the outlet passage into a thin tubular elastic seat member with a retainer backup ring. The elasticity of the seat provides tight conformity to ball irregularity

Valve with ball seat spring and antiflutter baffle

Antiflutter baffle plate and star spring combination for preventing squeal and impact damage in ball check valve used for high speed flow condition

Generant controller development for the advanced liquid propulsion system /ALPS/

Generant controller for advanced liquid propulsion syste

Vented piston seal prevents fluid leakage between two chambers

To prevent fluid leakage around piston seals separating two fluids under differential pressure, a venting system has been devised. Two methods may be used for venting seals through internal passages to an external low-pressure area, O-ring or split-ring seals

Fill valve development for the Advanced Liquid Propulsion System /ALPS/

Manually operated liquid fuel control valve for Advanced Liquid Propulsion System /ALPS

Tensile-strength apparatus applies high strain-rate loading with minimum shock

Tensile-strength testing apparatus employs a capillary bundle through which a noncompressible fluid is extruded and a quick-release valve system. This apparatus applies the test loads at relatively constant very high strain rates with minimal shock and vibration to the tensile specimen and apparatus

Filter for high-pressure gases has easy take- down, assembly

A small metal filter body, for use in tubing supplying sterilization gases, has an inlet end that can be unscrewed. Inside, the high pressure filter is supported on both sides and sealed by an O ring. Design facilitates assembly and disassembly of parts