Hydra-Cell H25SKPEHFTHC Polypropylene/EPDM Sealless Diaphragm Pump Head Only
Anyone who has fought a leaking seal on a chemical transfer pump knows how much time and money it costs. The Hydra-Cell H25SKPEHFTHC solves that problem at the design level. Its polypropylene pump head and EPDM diaphragms are built specifically for handling corrosive and aggressive fluids, while the sealless hydraulic diaphragm design removes the seals, packing, and cups that typically wear out first on conventional pumps. That means fewer replacement parts, less downtime, and a pump that can be left to run without constant babysitting.
This isn't a niche pump built for one industry. It shows up in agricultural spraying, industrial cleaning, water and wastewater treatment, chemical processing, and general fluid transfer work wherever a corrosion-resistant, low-maintenance pump is needed. The non-metallic construction makes it a strong fit for aggressive chemicals that would eat through metal components over time, and because the pump can run dry without damage, it tolerates the kind of real-world operating hiccups — a dry tank, an air lock, an inattentive operator — that would destroy other pump types.
Underneath the practical benefits is a genuinely clever mechanical approach. Instead of using a rotating shaft seal, the Hydra-Cell design hydraulically actuates the diaphragms through a pressurized oil chamber, so nothing rubs, leaks, or wears at the point where the pump meets the fluid. The result is a pump engineered for long service life in demanding, chemically hostile environments, backed by decades of proven Hydra-Cell reliability.
Key Features
- Sealless hydraulic diaphragm design — no seals, packing, or cups to leak or replace
- Polypropylene pump head for superior corrosion resistance
- EPDM diaphragms and O-rings suited to a wide range of chemical fluids
- Run-dry capable without damage to internal components
- Handles abrasive and particulate-laden fluids without premature wear
- Low-pulse, positive displacement flow output
- Compact, simple design that reduces long-term maintenance costs
Applications
- Chemical processing and transfer
- Agricultural and lawn care spraying
- Industrial and equipment cleaning
- Water and wastewater treatment
- Carpet and surface cleaning systems
- General corrosive and abrasive fluid handling
Specifications
- Model / Part Number: H25SKPEHFTHC
- Pump Head Material: Polypropylene
- Diaphragm & O-Ring Material: EPDM
- Pump Type: Sealless positive displacement diaphragm pump
- Max Flow Rate: Up to 20.0 GPM (75.9 l/min), dependent on cam selection
- Max Discharge Pressure: 350 PSI (24 bar) for non-metallic pump heads
- Max Operating Temperature: 140°F (60°C) for non-metallic heads
- Inlet Port Size: 1-1/2" NPT
- Outlet Port Size: 1" NPT
- Shaft Diameter: 1-1/8" (28.6 mm)
- Shaft Rotation: Reverse (bi-directional)
- Bearings: Tapered roller bearings
FAQs
Q: Can the Hydra-Cell H25SKPEHFTHC pump run without fluid present?
A: Yes. Its sealless diaphragm design allows it to run dry or against a closed inlet without sustaining internal damage, which is a major advantage over conventional seal-based pumps.
Q: What kinds of fluids is this pump best suited for?
A: The polypropylene head and EPDM diaphragms make it well suited for corrosive chemicals, agricultural chemicals, and abrasive fluids that would damage metal or less chemically resistant pump components.
Q: How does the sealless design reduce maintenance?
A: Because there are no seals, packing, or cups in the fluid path, the most common wear-and-leak points found in traditional pumps simply don't exist, which lowers both maintenance frequency and long-term repair costs.
Q: Is this pump interchangeable with metallic-head Hydra-Cell H25 models?
A: It shares the same H25 platform dimensions and mounting configuration as metallic-head versions, but operating pressure and temperature limits are lower due to the non-metallic construction, so system design should account for that difference.
Q: What oil is required for the hydraulic diaphragm chamber?
A: This EPDM-diaphragm configuration requires an EPDM-compatible hydraulic oil to maintain diaphragm integrity and prevent premature seal degradation.
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