June 2019 - See this page for an updated solution.

Bristol® 5457 Replacement

To replace the Bristol® 5457 remote set point pneumatic controller, consider the Fairchild Models 24XF or 24XFM Motor Driven Precison Pressure Regulators and a Pneumatic Controller.

The Fairchild motor driven regulator provides
the critical Lock In Last Position fail mode.

Sample Part Number (Part number for your application may be different.)	Fairchild 24XFS1094003	Fairchild 24XFM1032N9R
Key Features	*Lock in Last Position High Accuracy High Pressures	*Lock in Last Position High Accuracy High Pressures
Input	4 - 20 mA	4 - 20 mA
Power Supply	12 - 24 VDC	12 - 24 VDC
Max. Supply Pressure	500 psig	500 psig
Output Range	0.5 - 30 psig	0 - 30 psig
Exhaust	Tapped Exhaust with Constant Bleed	No Bleed
Approvals	FM Explosion Proof	FM Explosion Proof Approval Pending Expected July 2012
*Lock in Last Position - On loss of 4-20 mA signal there is a comparative circuit which will fail in last position. In addition, the DC motor will lock on loss of power.

Catalogs Fairchild 24XF Fairchild 24XFM Bristol 5457 Fisher 4195K
Since 1920 Fairchild Industrial Products Company has manufactured precision, high quality, pneumatic and electro-pneumatic controls. The company is ISO 9001 certified.