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This 3/8" NPT automatic vent limiter features a precision-machined ball check valve mechanism that permits free inhalation for sensitive diaphragm movement during normal operation but limits gas escape to within ANSI Z21
The construction ensures consistent delivery of gas to the pilot burner
the 311616 (functionally identical to the 311616/U universal part) delivers the exact tension needed to match the original factory calibration of your Honeywell pneumatic controls
Featuring a Single Pole Single Throw (SPST) configuration
Danfoss 013G-8591 Socket Body This 3/8" NPT automatic ventThe Danfoss 013G 8591 RA N Series Straight Socket Body is a precision engineered 1 2 inch NPT thermostatic radiator valve (TRV) designed for high performance hydronic distribution. This nickel plated brass body is critical for balancing two pipe heating systems, featuring a built in manual pre setting ring that allows for accurate flow limitation without the need for specialized tools. This ensures optimal system delta T and prevents over pumping. The
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