Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Image not available
SANDPIPER HDF3Sandpiper Replacement Diaphragms

SANDPIPER HDF3 & HDF4 3" Santoprene Diaphragm, 2 PK

SANDPIPER HDF3 Sandpiper Replacement Diaphragms. Specifications: Type: 3 in_4 in For Pump Size, 2 PK.

SKU 3G-OTH-86881

Also listed as: 286018354 · 286 018 354 · 286-018-354

Brand
SANDPIPER HDF3
Item
& HDF4 3" Santoprene Diaphragm, 2 PK
Category
Sandpiper Replacement Diaphragms
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SANDPIPER HDF3
Manufacturer Part Number
286.018.354
Type
3 in_4 in For Pump Size, 2 PK

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

SANDPIPER HDF3 Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

SANDPIPER HDF3 Sandpiper Replacement Diaphragms. Specifications: Type: 3 in_4 in For Pump Size, 2 PK.

Frequently Asked Questions

What is the SANDPIPER HDF3 & HDF4 3" Santoprene diaphragm used for?

This Santoprene diaphragm is a replacement part for Sandpiper HDF3 and HDF4 air-operated double-diaphragm pumps. It is used in industrial fluid-handling applications such as chemical transfer, wastewater treatment, and mining, where abrasion resistance and flexibility are required.

What are the specifications of the SANDPIPER HDF3 & HDF4 3" Santoprene diaphragm?

The diaphragm is made of Santoprene, fits pump sizes 3 in and 4 in, and comes in a pack of 2. The manufacturer part number is 286.018.354. It is designed for Sandpiper HDF3 and HDF4 pumps, offering durability in demanding pumping environments.

Where to buy SANDPIPER HDF3 & HDF4 3" Santoprene diaphragm worldwide?

3G Electric supplies the SANDPIPER HDF3 & HDF4 3" Santoprene diaphragm worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the SANDPIPER HDF3 & HDF4 Santoprene diaphragm?

To install, first isolate the pump and relieve pressure. Remove the pump's outer chamber bolts and separate the chambers. Replace the old diaphragm with the new Santoprene one, ensuring proper alignment. Reassemble and torque bolts to manufacturer specifications. Always follow Sandpiper's service manual.

Used in

Common applications for SANDPIPER HDF3
Chemical processing — Sandpiper HDF3 Santoprene diaphragms for transferring corrosive fluids in batch reactors.
Wastewater treatment — Sandpiper HDF3 Buna-N diaphragms for pumping sludge and oily waste streams.
Mining and minerals — Sandpiper HDF3 Neoprene diaphragms for handling abrasive slurries in dewatering operations.
Paint and coatings — Sandpiper HDF3 Santoprene diaphragms for circulating viscous paints and solvents.
Food and beverage — Sandpiper HDF3 Neoprene diaphragms for transferring non-oily food-grade liquids in washdown areas.
Petrochemical — Sandpiper HDF3 Buna-N diaphragms for loading and unloading hydrocarbon-based fluids.

SANDPIPER HDF3 Products

3G Electric supplies SANDPIPER HDF3 sandpiper replacement diaphragms. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Pump head constructed from Santoprene material, includes a duckbill valve. Designed for use in chemical metering and dosing systems for fluid injection applications. Features a 1/4 inch tubing connection size
STENNER
Pump head constructed from Santoprene material, includes a duckbill valve. Designed for use in chemical metering and dosing systems for fluid injection applications. Features a 1/4 inch tubing connection size
This pump head repair kit includes a #4 Santoprene pump tube and is constructed from polyethylene, polypropylene, PVC, and Santoprene. It is used for servicing and maintaining pump heads in chemical metering and fluid handling applications
STENNER
This pump head repair kit includes a #4 Santoprene pump tube and is constructed from polyethylene, polypropylene, PVC, and Santoprene. It is used for servicing and maintaining pump heads in chemical metering and fluid handling applications
Replacement tube for peristaltic pumps, compatible with STENNER S4V7X series and model S407XAA3011G1. Features Santoprene tubing with 13/32 in x 8 1/2 in dimensions and NPT connections. Rated for maximum pressure of 100 psi. Used to replace worn tubing in chemical metering applications
STENNER
Replacement tube for peristaltic pumps, compatible with STENNER S4V7X series and model S407XAA3011G1. Features Santoprene tubing with 13/32 in x 8 1/2 in dimensions and NPT connections. Rated for maximum pressure of 100 psi. Used to replace worn tubing in chemical metering applications
Pump head constructed from Santoprene material, supplied with a tube and featuring a 3/8 in tubing connection size. Designed for use in chemical metering and fluid transfer applications where corrosion resistance is required
STENNER
Pump head constructed from Santoprene material, supplied with a tube and featuring a 3/8 in tubing connection size. Designed for use in chemical metering and fluid transfer applications where corrosion resistance is required
This pump head is constructed from Santoprene and includes a pump tube with ferrules. It features a 1/4 in tubing connection size. Used in chemical metering pumps for transferring fluids in water treatment, pool sanitation, and industrial fluid handling applications
STENNER
This pump head is constructed from Santoprene and includes a pump tube with ferrules. It features a 1/4 in tubing connection size. Used in chemical metering pumps for transferring fluids in water treatment, pool sanitation, and industrial fluid handling applications
Replacement tube for peristaltic chemical metering pumps. Suitable for water treatment, chemical dosing, and industrial fluid transfer applications requiring precise flow. Compatible with STENNER S405X series. Tube dimensions: 1/2 in x 8 1/2 in with NPT connections; maximum pressure 25 psi
STENNER
Replacement tube for peristaltic chemical metering pumps. Suitable for water treatment, chemical dosing, and industrial fluid transfer applications requiring precise flow. Compatible with STENNER S405X series. Tube dimensions: 1/2 in x 8 1/2 in with NPT connections; maximum pressure 25 psi

More from SANDPIPER HDF3

View all SANDPIPER HDF3 parts
SANDPIPER HDF3
SANDPIPER HDF3
Replacement diaphragm for SANDPIPER HDF3 and HDF4 air-operated double-diaphragm pumps. Made of neoprene, suitable for 3 in and 4 in pump sizes. Temperature range -10°F to 200°F. Pack of 2
SANDPIPER HDF3
SANDPIPER HDF3
Replacement diaphragm for Sandpiper air-operated double-diaphragm pumps. Made of Buna-N (Nitrile) material, fits 3-inch and 4-inch pump sizes. Temperature range -10°F to 190°F. Pack of 2. Used in industrial fluid handling for abrasive slurries, viscous liquids, or corrosive fluids
SANDPIPER HDF3
SANDPIPER HDF3
Replacement diaphragm for Sandpiper HDF3 and HDF4 air-operated double-diaphragm pumps. Made of neoprene, it fits pump sizes 3 in and 4 in, with an operating temperature range of -10°F to 200°F. Suitable for transferring water-based fluids, mild chemicals, or slurries in industrial fluid-handling applications. Sold as a 2-pack