Greenlee PVA0021 BLOCK UNIT, PVA
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- May be directly connected to the tool or used remotely with hoses
- Compact 4-way, 3-position valve
- 3,000 - 4,000 psi (207 - 275 bar) return line ground dump safety valve
- Controlled advance and built-in hold feature
- Single-acting valve available to use with existing single-acting tools