Bosworth GH-M500D Guzzler 1 1/4 in. FNPT Flush-Mount Hand Pump

Bosworth GH-M500D Guzzler 1 1/4 in. FNPT Flush-Mount Hand Pump Description

The Bosworth GH‑M500D Guzzler® Flush‑Mount Hand Pump is engineered for concealed installations where dependable performance and a clean, low‑profile appearance are required. Designed for use as a bilge or sanitation pump, this manual diaphragm pump mounts flush below deck or behind walls up to 3/4 inch thick. Its durable acetal body, paired with a removable aluminum handle, delivers reliable operation and long service life in marine and utility environments. The handle can be positioned in twelve different orientations relative to the pump ports, providing installation flexibility in tight spaces. With a capacity of up to 12 gallons per minute and 1‑1/4 inch FNPT connections, the GH‑M500D supports efficient fluid transfer while maintaining a streamlined finish with a black or white trim ring.

Features

• Flush‑Mount Installation: Designed for below‑deck or behind‑wall mounting with a low‑profile trim ring.
• High Manual Output: Delivers up to 12 GPM at 90 strokes per minute.
• Adjustable Handle Orientation: Removable aluminum handle rotates into twelve positions for flexible installation.
• Durable Construction: Acetal body with corrosion‑resistant internal components for long service life.
• Large Hose Compatibility: Accommodates hose sizes from 1‑1/4 in. to 2 in.
• Marine and Sanitation Use: Suitable for bilge and sanitation system applications.

Specifications

• Body Material: Acetal (POM) copolymer
• Clamp Ring Material: Acetal (POM) copolymer
• Cover Plate Material: Polypropylene
• Diaphragm Material: Nitrile
• Flow Rate: 12 GPM
• Handle Material: Aluminum
• Handle Style: Vertical, removable
• Head: 30 ft.
• Hose Connection Size: 1‑1/4 in. FNPT (inlet and outlet)
• Internal Spring: None Lift: 12 ft.; 22 ft. with check valve
• Max Pressure: 15 psi
• Max Service Temperature: 212°F (100°C)
• Mounting Style: Flush mount
• Pump Type: Manual diaphragm hand pump
• Valves: Flapper (Nitrile)
• Weight: 2.50 lb.

Downloads

Specifications Sheet (PDF Download)