Bosworth GH-M500D Guzzler 1 1/2 in. MNPT 12 GPM Flush-Mount Hand Pump

Bosworth GH-M500D Guzzler 1 1/2 in. MNPT 12 GPM Flush-Mount Hand Pump Description

The Bosworth GH‑M500D Guzzler® Flush‑Mount Hand Pump is a high‑capacity manual diaphragm pump designed for concealed installations in marine and sanitation applications. Engineered to mount flush below deck or behind walls, this pump provides a clean, low‑profile appearance using a durable trim ring available in black or white. Delivering up to 12 gallons per minute at 90 strokes per minute, the GH‑M500D supports efficient bilge or waste transfer while maintaining reliable performance. The removable aluminum handle can be positioned in twelve different orientations relative to the pump ports, allowing flexible installation and ergonomic operation in tight spaces. Designed to accommodate larger hose sizes, this flush‑mounted pump combines performance, durability, and space‑saving design.

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 for efficient hand‑operated pumping.
• Adjustable Handle Positioning: Removable handle can be oriented in twelve different positions.
• Durable Construction: Acetal body with corrosion‑resistant internal components.
• Large Hose Compatibility: Accommodates hose sizes from 1‑1/4 in. to 2 in.
• Marine and Sanitation Ready: Ideal 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: 1‑1/2 in. MNPT (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)