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12V Water Pressure Diaphragm Pump 3.8LPM 40PSI Self-Priming RV Caravan Marine

12V Water Pressure Diaphragm Pump 3.8LPM 40PSI Self-Priming RV Caravan Marine

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AT009

$29.99 AUD
$39.99 AUD $29.99 AUD
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Low stock: 60 left

12V Water Pressure Diaphragm Pump – 3.8LPM, 40PSI

Designed for reliable water delivery in RVs, caravans, boats, camping setups and other compact water systems, this 12V diaphragm pump provides consistent water pressure with automatic on-demand operation.

With a built-in 40 PSI pressure switch, the pump automatically starts when water is required and stops when the desired pressure is reached. Its self-priming design allows flexible installation and can operate even when mounted above the water tank.

Key Features

  • 12V DC Operation: Suitable for a range of mobile and off-grid water systems.
  • 3.8LPM Flow Rate: Delivers up to 1.0 gallon per minute for everyday water supply applications.
  • 40 PSI Maximum Pressure: Provides consistent water pressure for suitable low-volume water systems.
  • Self-Priming Design: Supports up to 1.2m of suction lift, allowing the pump to be installed above the water tank.
  • Automatic On-Demand Operation: Built-in pressure switch automatically starts and stops the pump according to water demand.
  • Dry-Run Capability: Designed to operate without water for added installation flexibility.
  • Thermal Protection: Built-in thermal protector helps protect the motor during operation.
  • Compact Design: Space-saving construction makes it suitable for compact installations.
  • Quiet Operation: Designed to provide reliable water pumping with reduced operating noise.
  • Standard Mounting Pattern: Suitable for common installation configurations.

Specifications

Pump Type 2-Chamber Positive Displacement Diaphragm Pump
Voltage 12V DC
Flow Rate 3.8LPM / 1.0 GPM
Maximum Pressure 40 PSI / 2.8 bar
Priming Capability Up to 1.2m / 4ft suction lift
Inlet / Outlet 3/8" Hose Barb
Maximum Recommended Temperature 43°C / 110°F
Weight Approx. 0.57kg / 1.25lb
Power Leads 18 AWG, approx. 35cm, with 2-pin connector
Duty Cycle Intermittent

Suitable Applications

  • RV and caravan water systems
  • Marine and boat applications
  • Camping and portable water systems
  • Water treatment and RO systems
  • Beverage and food service equipment
  • Distillation equipment
  • Agricultural spraying
  • Automotive applications
  • General industrial water systems

Package Contents

  • 1 × 12V Water Pressure Diaphragm Pump

Note: Please confirm the pump specifications, connection size and electrical requirements are suitable for your intended application before purchase. Product colour may vary slightly due to lighting and screen settings. Manual measurements may have a tolerance of approximately ±1–3cm.

Warranty

At Mershine, we stand behind our products. Most products come with a 12-month warranty unless otherwise stated on the product listing. Some products may be eligible for an extended warranty, so please check the specific product details to confirm.

Please note: Our warranty covers manufacturer defects and does not cover damage caused by user misuse or issues during delivery.

How to initiate a warranty claim
If you experience an issue with your product, please follow the steps below to submit a warranty claim:

Contact Customer Service and provide the following details.

· Order ID
· Description of the issue
· Images/Videos: Show any visible defects or faults. Please use the recommended file size and format for best visibility.

Our team will evaluate your claim and respond promptly. If you have any questions, please contact Mershine[customer-service@mershine.com] Customer Service and provide your order ID for reference.

Shipping & Return

Returns Policy

We offer a 30-day return policy. This means you have 30 calendar days from the date you receive your item to submit a return request.To be eligible for a return, your item must be in the original condition as delivered, unopened and unused, with all original tags attached and in its original packaging. You will also need to provide your receipt or valid proof of purchase.
To initiate a return, please contact us at customer-service@mershine.com. Once your return request is approved, we will send you a pre-paid return shipping label together with detailed instructions on how and where to send your parcel.Any items returned without a prior authorised return request will not be accepted.

Shipping

Free standard shipping is provided on all our products. Additional delivery surcharges may apply for remote and regional Australian areas.We aim to dispatch all orders within 1 business day once full payment is confirmed.If you wish to cancel your order after your item has already been dispatched, please be aware that original shipping costs may not be refunded. Extra delivery charges may also apply for redelivery or delivery address change requests.

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