Ross Hill / NOV Parts | SCR Drilling Modules

Q: Are Ross Hill and NOV parts interchangeable?

Often yes; NOV kept most Ross Hill numbering, with DC modules the main exception.

Q: Can you supply obsolete Ross Hill modules?

Yes; new old stock, surplus, and cross-referenced replacements.

Ross Hill Controls and the Hill Hayes SCR designs (now NOV) powered a generation of drilling rigs. We source the control modules, SCR bay parts, and power that keep those systems running, and we cross-reference Ross Hill and NOV numbering both directions.

P/N	EI Ref	Description
0521-2500-14	EI-0521-2500-14	AC Control Module (SCR)
0522-2400-23	EI-0522-2400-23	DC Control Module
0522-2400-21	EI-0522-2400-21	DC Module = NOV 6415-2400-21

NOV largely carried Ross Hill numbering forward; certain DC modules use distinct 6415- numbers.

Frequently asked

Are Ross Hill and NOV parts interchangeable?

Often yes, NOV kept most Ross Hill numbering. The DC modules are the main exception, where distinct 6415- numbers appear. We verify before quoting.

Can you supply obsolete Ross Hill modules?

Yes, new old stock, surplus, and cross-referenced replacements.

Ross Hill / NOV

Ross Hill AC Control Module

Ross Hill DC Module

SCR Bay Components

Drilling Power Modules

Frequently asked

Rig down? Send us the part number.