Pulsafeeder DM7H1FH Mechanically Actuated Diaphragm Metering Pump – Green Line Series, 634 GPH – 73 PSI

Standard Features & Benefits

• Durable Multi-Layer PTFE-Faced Diaphragm
  The flat, mechanically actuated diaphragm ensures long service life and exceptional chemical resistance. Multiple sealing beads on the diaphragm minimize the risk of leakage.
• Advanced Diaphragm Sealing System
  A secure, double-seal configuration includes a secondary O-ring and a retention plate, providing hydrostatic protection and eliminating chemical spray. This system maintains proper torque over time and resists loosening.
• Double-Barrier Check Valve Assembly
  Provides added leak protection (except in 316L stainless steel configurations) for safer and more secure operation.
• Spherically Balanced Flow Check Valves
  These valves reduce turbulence, improve solids handling, and provide self-flushing action to help prevent cavitation and maintain flow consistency.
• Soft-Seated O-Ring Valve Design
  Enhances priming ability, reduces operating noise, and improves performance with slurries or solids (not included in 316L configurations).
• Compact, Sealed Gearbox
  The lightweight, fully enclosed gearbox saves space and prevents contamination. Oversized shielded bearings and a sealed upper worm bearing increase durability, reduce noise, and improve motor and gear longevity.
• Auto-Locking Stroke Adjustment
  The built-in auto-locking mechanism prevents unintended movement of the stroke setting. Once adjusted, it stays firmly in place—no secondary locking device required.
• Motor Flange Drain Path
  Directs fluid away from the drive shaft seal, eliminating pooling and protecting the motor connection.
• Non-Metallic Motor Coupling
  Prevents seizing or welding between the worm shaft and motor shaft, making motor maintenance and replacement easier.
• Stable Mounting Design
  Flat, solid feet provide secure pump support and prevent tipping before installation.

Optional Features

• Leak Detection System
  Protect your equipment and process with an optional double-diaphragm configuration featuring a pressure gauge and switch to monitor diaphragm integrity. This setup offers superior protection in the event of diaphragm failure.
• Variable Frequency Drive (VFD)
  Expand operational flexibility with a VFD and compatible motor, allowing remote control and fine-tuned performance across a wider range of conditions.