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Description:
A cartridge-style pilot-operated spool-type sequence valve with external pilot and spring chamber drain.
Operation:
In its steady state, the valve blocks flow from ① to ②, with the spring chamber drained at ③. On attainment of a pre-determined pressure at ①, the cartridge shifts to open ① to ②. Note that back-pressure on ③ adds to the spring setting value.
Specifications
Operating pressure: |
350 Bar on port ① and ②; 240 bar on port ③ |
Flow: |
See pressure drop vs. flow graph |
Internal leakage: |
82 cc/ min. max. to 85% of nominal setting |
Standard spring ranges: |
3.4 ~ 27.6 Bar 10.3 ~ 103.4 Bar 27.6 ~ 206.9 Bar |
Temperature: |
(-40℃ to +120℃) with NBR material seals |
Fluids: |
Mineral-based fluids with viscosity of 7.4 to 420 cSt. |
Cavity: |
HY10-3, see page G.1.4 |
Body material: |
Steel & ductile iron rated to 350 bar |