Blow-down valves range from 1”, 1½", 2" and 2 ½” pipe sizes
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Everlasting boiler blowdown valves are engineered for one of the toughest valve applications in a steam system: removing sludge, scale, sediment, and impurities from the boiler while maintaining reliable shutoff under demanding temperature and pressure conditions.
Blow-down valves range from 1”, 1½", 2" and 2 ½” pipe sizes
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Available in three ANSI class ratings: 250 / 300 / 600
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Quick and slow-release variances in Series 4000 / 5000 / 6000
SHOP PRODUCTSBoiler blowdown is not clean water service. Scale, sludge and solids can enter the seat area during operation, accelerating leakage and forcing maintenance teams into repeated repair or replacement cycles. EV’s rotating-disc design is built to wipe, self-lap and continue sealing in severe boiler conditions.
| Common failure mode | EV solution |
|---|---|
| Scale, sludge or silica trapped in the seat | Self-wiping disc action helps push debris away from the precision-lapped seating surface. |
| Seat washout and leakage after cycling | Self-lapping sealing surfaces are designed to improve sealing contact with continued operation. |
| Temperature changes affecting seal integrity | EV blowdown designs are built for high-temperature boiler service and demanding pressure conditions. |
| Repeated valve replacement during outages | Long-life severe-service construction helps lower maintenance frequency and downtime exposure. |
| Unclear valve selection between quick, slow and dual arrangements | 4000, 5000 and 6000 Series options support quick-opening, slow-opening and duplex / uni-tandem configurations. |
Unlike conventional valves that can wear out quickly in dirty steam and blowdown applications, Everlasting valves are designed to wear in, not out.
The EV sealing disc rotates across the precision-lapped body seat each time the valve operates. This motion helps clean the sealing surface, reduce debris buildup, and maintain reliable shutoff performance in severe boiler service.
Because our valve’s proprietary technology wears in, even when exposed to thick slurry, it lasts much longer than other valves. The rotating disc slides across the body of the valve during operation, clearing out harmful boiler scale and other particles and cleaning the precision-lapped surface. Post packing is self-adjusted, reducing maintenance requirements and preventing leakage.
Our boiler blowdown valves are available in quick-opening, slow-opening, straight and angle configurations, for applications that include steam boiler blowdown, surface blowdown, water-column drain, and shut-off and stop valves.
Use this quick guide to help direct toward the right product family before submitting an RFQ. This is not a final engineering selection; it is a front-end application review tool for website visitors.
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If your valves are leaking, washing out, hanging up on boiler scale or being replaced during every outage, EV can help review the application and recommend the right 4000, 5000 or 6000 Series direction.