this 4520-2031-000 switch may fit other units if the temperature range and mounting specifications align

Compact footprint maximizes rail space

Johnson Controls A-4400-610 Bowl O Ring

This specific diaphragm is also cross-compatible with Spence Type N and Type W pilots

0860-inch diameter

Maxitrol R5310-1530 Spring this 4520-2031-000 switch may fitThe Maxitrol R5310 1530 is a high performance yellow spring engineered specifically for R600 and R600S Series regulators. Designed for precision gas pressure regulation, this component provides an outlet pressure range of 15" to 30" W. C., making it essential for high demand industrial and commercial heating applications. As a veteran technician knows, maintaining the correct spring tension is critical for achieving stable gas flow control and