Grundfos 97751533 Valve Kit

As an HVACR contractor, you know that maintaining precise chemical injection requires components that stand up to aggressive process fluids. The Grundfos 97751533 Valve Kit is the factory-specified service solution for Smart Digital DDA, DDC, and DDE dosing pumps. This kit, designated as SD-S-PV/V/C-1, is engineered with high-grade PVDF (polyvinylidene fluoride) housings, FKM (Viton) gaskets, and Ceramic valve balls to ensure absolute chemical compatibility and leak-free performance. Whether you are servicing a DDA 7.5-16 or a DDE 6-10 unit, this Grundfos dosing pump repair kit provides the replacement diaphragm and check valve assemblies needed to restore volumetric accuracy and suction lift capabilities.

Replacing these wear items during routine dosing pump maintenance prevents unexpected downtime and ensures the stepper motor technology in your Grundfos unit can maintain its 3000:1 turndown ratio without loss of prime. This kit is a direct OEM replacement part, precision-machined to handle flow rates from 6 to 9 l/h at high backpressures. Using genuine Grundfos pump accessories like the 97751533 ensures your chemical metering pump maintains its 1% setpoint accuracy across demanding food and beverage, water treatment, or industrial disinfection applications.

Key Benefits for Technicians:

• Chemical Resistance: The PVDF and FKM construction resists degradation from harsh oxidizers and acids.
• Complete Service Set: Includes the valve and diaphragm components required for a full dosing head overhaul.
• Broad Compatibility: Fits multiple SMART Digital models, including DDA, DDC, and DDE versions rated for 6-9 l/h.
• High Accuracy: Ceramic valve balls prevent backflow and maintain consistent injection cycles in high-precision setups.

Common Questions:

Which Grundfos pump models is this kit compatible with?
This kit is designed for the SMART Digital generation, specifically covering the DDA, DDC, and DDE ranges with capacities between 6 and 9 liters per hour (e.g., DDA 7.5-16, DDC 6-10, DDC 9-7, and DDE 6-10).

What materials are used in the wetted parts?
The kit features a PVDF valve housing, FKM (Viton) gaskets/diaphragm material, and Ceramic valve balls (code SD-S-PV/V/C-1), providing excellent resistance to most process chemicals.

How often should the diaphragm and valves be replaced?
Service intervals depend on the chemical aggressiveness and duty cycle, but replacing these components annually is standard practice to prevent diaphragm fatigue and check valve leakage.

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.