Spirax-Sarco 64159 Bucket Trap

The Spirax-Sarco 64159 is a rugged B1H-15 inverted bucket steam trap engineered for reliable condensate management in low-pressure steam systems. Featuring a 3/4 inch FNPT inline horizontal connection and a durable cast iron body (ASTM A126 Class B), this mechanical trap is designed to withstand hydronic shock and handle dirt or scale effectively. With a 15 psi maximum operating pressure and a high discharge capacity of up to 1,040 lbs/hr, it is a preferred choice for steam main drip stations, laundry equipment, and industrial drying assemblies where high-temperature performance up to 450°F is required.

Built for the rigors of commercial plant environments, the Spirax Sarco B series utilizes a stainless steel valve head, seat, and bucket mechanism. This internal configuration responds to the density difference between steam and condensate, providing a cyclic discharge that remains close to steam temperature. The heavy-duty inverted bucket steam trap design ensures long-term resistance to wear and corrosion, minimizing bypass even under light load conditions. For technicians, the inline piping layout simplifies maintenance, allowing for internal inspections without disturbing the permanent pipework.

• Durable Construction: Heavy-duty cast iron body with stainless steel internals for superior resistance to corrosion and water hammer.
• High Capacity: Robust flow rates up to 1,040 lbs/hr optimized for 15 psi steam systems.
• Maintenance Efficiency: Inline horizontal configuration permits the servicing of the B1H-15 trap mechanism without removing the body from the line.
• Versatile Application: Ideal for industrial dryers, laundry presses, and heating coils requiring consistent air purging.

What is the maximum operating pressure for the B1H-15?
This specific model is rated for a maximum operating pressure (PMO) of 15 psig. While the body has a higher maximum allowable pressure (PMA) of 250 psig, the internal orifice is sized specifically for efficiency at 15 psi.

Is this trap suitable for superheated steam?
Yes, though a check valve is recommended on the inlet to prevent the loss of the water seal during pressure fluctuations in superheated applications.

Can I repair the internals instead of replacing the entire unit?
Yes. Replacement mechanism kits, including the bucket, valve head, and seat, are available to restore the cyclic action without replacing the cast iron housing.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.