Nuclear Version - Request Made to Order
Hydraulic Snubbers allow free thermal movement of piping and equipment during normal operation. When locked up by transient loads they provide resistance to movement, protecting your piping and equipment.
Service: For use on piping systems or equipment when unrestrained thermal movement must be allowed, but which must be restrained during impulsive or cyclic disturbance. The unit is not effective against low amplitude, high frequency movement. Use with standard settings to prevent destructive response to earthquakes, flow transients or wind load. Special settings are available to absorb the continuous thrust resulting from safety valve blow-off or pipe rupture.
Size Range: Seven standard sizes with cylinder bores of 1 1 ⁄2" to 8" and with normal load ratings from 3,000 pounds to 128,000 pounds. All are available with 5", 10", 15", or 20" strokes except the 1 1 ⁄2" size which is offered with 5” and 10” strokes only. Snubbers are available with integral or remote reservoirs.
Finish: Fig. 200/201 painted with semi gloss primer. Fig. C-200/C-201 corrosion resistant; painted with carbo zinc.
Standard Settings: The standard settings are: Locking (activation) velocity 8 ± 2 in/min. Bleed rate (post activation) at normal rated load 4 ± 1 in/min. (Special settings are available). The valves are calibrated at the factory within the tolerances indicated at room temperature. Locking velocity and bleed rate will vary with temperature. Testing has indicated that there is little effect of these changes on dynamic operation.
Features:
- Valves are available as either temperature compensating or as adjustable
- Available with pressurized, polycarbonate, or metal vented reservoirs
- Continuous operation at 150° F with brief transients to 350° F
- Factory calibrated valves
- Rapid, positive valve closure
- Special design minimizes the “lost motion” which results from the shifting and seating of piston seals
- Unlocked resisting force is less than 17 1⁄2 pounds for sizes 1⁄4 and 1⁄2 Fig. 3306 and less than 2% of rated load for all other sizes
- Stable non-flammable, long life hydraulic fluid
- Self-aligning bushings permit ± 5° misalignment or angular motion. Bushings are coated with a dry lubricant.
200 201 C200 C201 Hydraulic Snubber Submittal