Description
This valve spring is used on the GLV 1.5 and 3.0 and Stokes® 146, 148, 149, 212, 412, and 612 vacuum pumps.
This valve spring is not compatible with the newer poppet valves.
The 146 pumps use one (1) of these valve springs.
The 148 pumps use two (2) of these valve springs.
The 149 pumps use three (3) of these valve springs.
The 1.5 and 212 pumps use four (4) of these valve springs.
The 3.0, 412 and 612 pumps use eight (8) of these valve springs.
Equivalent to OEM part# 274-172-001
