Wns gas & oil fired hot water boilers are three pass wet pack, horizontal, smoke tube type( fire tube) fusion welded. Hot water boilers gas & oil fired are made to iso / ibr / asme code. These are available in capacity of 0.7mw. To 14mw. Components are engineered for maximum safety, highest efficiency, dependability and quit operation. Wet back models eliminate rear end refractory and its inherent maintenance cost, reduces stress of rear tube sheet and ligament cracking, radiant heat is eliminated, lengthening tube life and reducing heat loss from rear turn around. Wns gas & oil fired hot water boiler feature: 1. Fully wet - back design effectively absorbs radiant heat into the water, keeping tube ends and rear of coiler cooler than in dry back design. 2. Three passes extract maximum useable heat from the fuel. 3. Large , water - surrounded furnace tube assures complete combustion and heat absorption without flame impingement. Wns gas & oil fire tube boiler application Boiler suitable for bakery, pharmaceuticals &bulk drugs, beverages, dairy, fetilizers, processed food industry, textile industry, hospitals, hotels, investment precision casting industry, laundry, paints & varnishing industry, mineral water plant, yarns, etc TypeRated evaporation (mw)Rated steam pressure(mpa)Nominal steam temperature(c)Feed temperature(c)Heating area(m2)Water volume (m2) Wns0.7-1.0-y(q)0.71.09570293.1 Wns1.4-1.0-y(q)1.41.0957055.73.93 Wns2.1-1.0-y(q)2.11.0957078.844.8 Wns2.8-1.0-y(q)2.81.09570986.8 Wns4.2-1.25-y(q)4.21.259570141.79 Wns5.6-1.25-y(q)5.61.259570189.711.9 Wns7-1.25-y(q)71.25957024812.4 Note: here are some of specifications for your reference, and you can consult us for more details.