Belimo B225HT1856 Valve 320788-703 Replacing a brittle 780643 igniter

Replacing a brittle 780643 igniter with this genuine 100165926 HVAC part stabilizes resistance and prevents the nuisance 3-flash flame failure errors common in aging Power-fin and Knight-style units

utilizing this OEM component is critical for ensuring full compatibility with existing internal linkage and spring assemblies

the 4027060 assembly features high-grade lead wires and a moisture-resistant sensor head to maintain signal integrity in demanding commercial environments

the 3/8" shaft motor specification must be maintained for proper balance and rotation speed

We recommend replacing these seals every time the oil filter element is serviced to prevent compression set leaks

Belimo B225HT1856 Valve 320788-703 Replacing a brittle 780643 igniterThe Belimo B225HT1856 is a high performance 1 inch NPT 2 way control valve engineered for demanding hydronic and steam applications. Featuring a 18. 56 Cv rating and an equal percentage flow characteristic, this valve ensures precise modulation in heat exchangers and AHU coils. The construction utilizes a forged brass body with a 304 stainless steel ball and stem, specifically designed to withstand high temperature water up to 266F and low pressure