Compact and affordable! But it also ensures a steady flow! Miyawaki's best-selling number one steam trap.
The disk-type steam trap is a trap that utilizes the thermodynamic properties of steam and condensate flowing into the trap to open and close the valve. 【Features】 1. Meets various needs! With a diameter range of 15A to 50A, capable of horizontal and vertical installation, and a maximum flow rate exceeding 2,000 kg/h (for sizes 32A to 50A), it is a versatile trap that is easy to adopt in any factory! 2. Automatic blow-off mechanism Equipped with a mechanism to quickly discharge condensate and air during the initial venting! 3. Easy maintenance! With fewer parts, maintenance is simple! For sizes 15A to 25A, just turning the cap makes disassembly easy!
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basic information
Nominal diameter: 15A/20A/25A/32A/40A/50A Maximum operating pressure: 1.6MPa Maximum operating temperature: 220℃ Body material: 15A to 25A ⇒ FCD450 (ductile cast iron) 32A to 50A ⇒ FC250 (cast iron) Connection: threaded, flange
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Applications/Examples of results
Steam transport pipe Small steam equipment, etc.
Detailed information
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This is the emission flow diagram of S31N.
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This is the dimensional diagram for S31NF (15A to 25A). The face-to-face distance for 15A/20A is 90mm, and for 25A it is 95mm. For the flange type, it is 140mm for 15A, 150mm for 20A, and 160mm for 25A.
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This is the dimensional diagram of S31NF (32A to 50A). The distance between the threaded surfaces is 180mm, and the distance between the flange surfaces is 240mm.
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Company information
Miyawaki is a specialized manufacturer of steam system products with over 90 years of history. Our product lineup includes steam traps, steam water heaters, and fluid control equipment, widely adopted in industries such as oil refining, chemical plants, and food processing. With decades of technical expertise and proven experience, we support the development of efficient and safe steam systems. From standard products to custom specifications, we offer flexible solutions tailored to existing installations. Delivering trusted quality and service to customers worldwide—feel free to contact us anytime.
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