MARS 21787 Replacement Kit
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MARS 21787 Replacement Kit

MARS 21787 Replacement Kit

When dealing with a pump that cycles repeatedly or suffers from flow reversal, installing the MARS 21787 Check Valve Replacement Kit is the standard solution for restoring system integrity. This kit is specifically designed for MARS condensate pumps, utilizing a field-serviceable silicone duck-bill check valve to ensure quiet operation and prevent backflow from the discharge line. Constructed from high-grade silicone, these components are engineered to withstand the corrosive nature of furnace and AC condensate while maintaining a tight seal under standard operating pressures.

For technicians in the field, this HVAC condensate pump repair kit includes all necessary precision-engineered components for a direct swap, reducing labor time and system downtime. The duck-bill design is favored for its reliable performance in low-pressure applications, effectively eliminating the "thumping" noise often associated with plastic ball-style alternatives. By ensuring that fluid only moves in the intended direction, the 21787 kit preserves the operational life of the pump motor and prevents water damage from tank overflows during the off-cycle.

Key Benefits

  • Specifically engineered for compatibility with MARS condensate pump models to ensure a precise mechanical fit.
  • Constructed from durable silicone materials that resist degradation from acidic condensate and temperature fluctuations.
  • Feature-rich duck-bill valve design provides superior sealing and significantly reduces noise during pump activation.
  • Comprehensive check valve maintenance kit facilitates quick field servicing without requiring specialized tools.
  • Prevents condensate backflow, protecting the pump from excessive short-cycling and potential motor burnout.

Common Questions

Why is my condensate pump cycling even when the HVAC system is off?
This typically indicates a failed check valve. When the valve fails, water in the discharge line drains back into the tank, raising the float and triggering the pump again. Replacing the assembly with a MARS 21787 kit stops this reversal.

Are these valves compatible with other pump brands?
While designed primarily for MARS 21787 and related pump series, compatibility depends on the discharge barb size. For the best results and to maintain condensate system efficiency, use this kit for its designated MARS equipment.

What is the benefit of a duck-bill valve over a standard ball check?
Duck-bill valves are often preferred for their quiet operation and ability to handle small amounts of debris without losing their seal, unlike ball valves that may get stuck open by sediment.

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.

$15.62
MARS 21787 Replacement Kit
$15.62

MARS 21787 Replacement Kit

When dealing with a pump that cycles repeatedly or suffers from flow reversal, installing the MARS 21787 Check Valve Replacement Kit is the standard solution for restoring system integrity. This kit is specifically designed for MARS condensate pumps, utilizing a field-serviceable silicone duck-bill check valve to ensure quiet operation and prevent backflow from the discharge line. Constructed from high-grade silicone, these components are engineered to withstand the corrosive nature of furnace and AC condensate while maintaining a tight seal under standard operating pressures.

For technicians in the field, this HVAC condensate pump repair kit includes all necessary precision-engineered components for a direct swap, reducing labor time and system downtime. The duck-bill design is favored for its reliable performance in low-pressure applications, effectively eliminating the "thumping" noise often associated with plastic ball-style alternatives. By ensuring that fluid only moves in the intended direction, the 21787 kit preserves the operational life of the pump motor and prevents water damage from tank overflows during the off-cycle.

Key Benefits

  • Specifically engineered for compatibility with MARS condensate pump models to ensure a precise mechanical fit.
  • Constructed from durable silicone materials that resist degradation from acidic condensate and temperature fluctuations.
  • Feature-rich duck-bill valve design provides superior sealing and significantly reduces noise during pump activation.
  • Comprehensive check valve maintenance kit facilitates quick field servicing without requiring specialized tools.
  • Prevents condensate backflow, protecting the pump from excessive short-cycling and potential motor burnout.

Common Questions

Why is my condensate pump cycling even when the HVAC system is off?
This typically indicates a failed check valve. When the valve fails, water in the discharge line drains back into the tank, raising the float and triggering the pump again. Replacing the assembly with a MARS 21787 kit stops this reversal.

Are these valves compatible with other pump brands?
While designed primarily for MARS 21787 and related pump series, compatibility depends on the discharge barb size. For the best results and to maintain condensate system efficiency, use this kit for its designated MARS equipment.

What is the benefit of a duck-bill valve over a standard ball check?
Duck-bill valves are often preferred for their quiet operation and ability to handle small amounts of debris without losing their seal, unlike ball valves that may get stuck open by sediment.

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.

Product Information

Shipping & Returns

Description

When dealing with a pump that cycles repeatedly or suffers from flow reversal, installing the MARS 21787 Check Valve Replacement Kit is the standard solution for restoring system integrity. This kit is specifically designed for MARS condensate pumps, utilizing a field-serviceable silicone duck-bill check valve to ensure quiet operation and prevent backflow from the discharge line. Constructed from high-grade silicone, these components are engineered to withstand the corrosive nature of furnace and AC condensate while maintaining a tight seal under standard operating pressures.

For technicians in the field, this HVAC condensate pump repair kit includes all necessary precision-engineered components for a direct swap, reducing labor time and system downtime. The duck-bill design is favored for its reliable performance in low-pressure applications, effectively eliminating the "thumping" noise often associated with plastic ball-style alternatives. By ensuring that fluid only moves in the intended direction, the 21787 kit preserves the operational life of the pump motor and prevents water damage from tank overflows during the off-cycle.

Key Benefits

  • Specifically engineered for compatibility with MARS condensate pump models to ensure a precise mechanical fit.
  • Constructed from durable silicone materials that resist degradation from acidic condensate and temperature fluctuations.
  • Feature-rich duck-bill valve design provides superior sealing and significantly reduces noise during pump activation.
  • Comprehensive check valve maintenance kit facilitates quick field servicing without requiring specialized tools.
  • Prevents condensate backflow, protecting the pump from excessive short-cycling and potential motor burnout.

Common Questions

Why is my condensate pump cycling even when the HVAC system is off?
This typically indicates a failed check valve. When the valve fails, water in the discharge line drains back into the tank, raising the float and triggering the pump again. Replacing the assembly with a MARS 21787 kit stops this reversal.

Are these valves compatible with other pump brands?
While designed primarily for MARS 21787 and related pump series, compatibility depends on the discharge barb size. For the best results and to maintain condensate system efficiency, use this kit for its designated MARS equipment.

What is the benefit of a duck-bill valve over a standard ball check?
Duck-bill valves are often preferred for their quiet operation and ability to handle small amounts of debris without losing their seal, unlike ball valves that may get stuck open by sediment.

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.