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Samoa Metal Diaphragm Pumps

Our metallic diaphragm pumps are designed for a wide range of industrial applications. Available in three durable materials—aluminum, anodized aluminum, and stainless steel.

CATEGORY: Pumps
BRAND: Samoa
TYPE: Equipment

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Our metallic diaphragm pumps are designed for a wide range of industrial applications. Available in three durable materials—aluminum, anodized aluminum, and stainless steel—these Air Operated Double Diaphragm (AODD) pumps are built to handle challenging fluid transfer needs with ease.

Material Options:

  • Wet End Materials:

    • Aluminum: Suitable for medium corrosion and abrasion resistance.
    • Anodized Aluminum: Offers enhanced corrosion resistance compared to regular aluminum.
    • Stainless Steel: Ideal for applications requiring higher resistance to chemicals and abrasions, making it perfect for harsh environments.

  • Diaphragm Materials:

    • Buna-N: Offers good resistance to oils and fuels.
    • EPDM: Excellent resistance to water, steam, and some chemicals.
    • Geolast®: Provides good resistance to various chemicals.
    • PTFE: Known for its superior chemical resistance and durability.
    • Santoprene®: Suitable for a wide range of chemicals and temperatures.
    • Viton® / FKM: Excellent resistance to high-temperature, aggressive chemicals.

Liquid Connections Available:

  • FNPT (Female National Pipe Thread)
  • FBSPT (Female British Standard Pipe Thread)
  • ANSI / DIN Flanged Connections

These pumps are ideal for a variety of fluid transfer applications, including chemicals, oils, fuels, and more. Whether you require pumps for medium duty or harsh industrial environments, our metallic diaphragm pumps are designed to deliver reliable performance.

Liquid Port Size: 1/2 in.  
Liquid Connection Types: FNPT (FBSPT)  
Standard Suction Port: Right  
Standard Discharge Port: Right  
Air Inlet Connection Size: 1/4 in. FNPT  
Air Exhaust Connection Size: 3/8 in. FNPT  
  Aluminum Stainless Steel
Max Height: 11.2 in. (284 mm) 11.2 in. (284 mm)
Max Width: 10.3 in. (262 mm) 10.3 in. (262 mm)
Max Depth: 6.4 in. (163 mm) 6.4 in. (163 mm)
Weight: 10 lbs (4.5 kg) 20 lbs (9.1 kg)
 
Max Flow: 15 gpm (56.8 lpm)
Max Air Pressure: 120 psi (8.2 bar)
Max Static Suction Head: 23 ft-H2O (7.0 m-H2O)
Max Suction Lift (Dry): 15 ft-H2O (4.5 m-H2O)
Max Suction Lift (Wet): 31 ft-H2O (9.4 m-H2O)
Max Solids: 1/8 in. (3.2 mm)
Avg. Displacement Per Stroke: (0.03 G / 0.10 l)
Sound Level: 80 dBA (with Muffler)
 
Wet End: Aluminum, Anodized Aluminum, Stainless Steel
Air End: Aluminum, Glass Filled Polypropylene
Diaphragm: Geolast®, PTFE, Santoprene®, Viton® / FKM
Balls: Geolast®, PTFE, Santoprene®, Stainless Steel, Viton® / FKM
Seats: Aluminum, Nylon, Polypropylene, Stainless Steel
O-Rings: Buna-N, EPDM, PTFE, Viton® / FKM
Hardware: Stainless Steel, Zinc Plated Steel
Muffler: Metal, Plastic

Aluminum

A050-NAA-GTPN-S30 
NPT, Geolast® Diaphragm, PTFE Ball, Polypropylene Seat, Buna-N O-Ring, Zinc Plated Hardware

A050-BAA-GTPN-S30
BSPT, Geolast® Diaphragm, PTFE Ball, Polypropylene Seat, Buna-N O-Ring, Zinc Plated Hardware

A050-NAA-SSPE-S30
NPT, Santoprene® Diaphragm, Santoprene® Ball, Polypropylene Seat, EPDM O-Ring, Zinc Plated Hardware

A050-BAA-SSPE-S30
BSPT, Santoprene® Diaphragm, Santoprene® Ball, Polypropylene Seat, EPDM O-Ring, Zinc Plated Hardware

A050-NAA-TTYT-S30
NPT, PTFE Diaphragm, PTFE Ball, Nylon Steel Seat, PTFE O-Ring, Zinc Plated Hardware

A050-BAA-TTYT-S30
BSPT, PTFE Diaphragm, PTFE Ball, Nylon Seat, PTFE O-Ring, Zinc Plated Hardware

 

Stainless Steel

A050-NA3-GT3N-S70
NPT, Geolast® Diaphragm, PTFE Ball, Stainless Steel Seat, Buna-N O-Ring, Stainless Steel Hardware

A050-BP3-GT3N-S70
BSPT, Geolast® Diaphragm, PTFE Ball, Stainless Steel Seat, Buna-N O-Ring, Stainless Steel Hardware

A050-NP3-SS3E-S70
NPT, Santoprene® Diaphragm, Santoprene® Ball, Stainless Steel Seat, EPDM O-Ring, Stainless Steel Hardware

A050-BP3-SS3E-S70
BSPT, Santoprene® Diaphragm, Santoprene® Ball, Stainless Steel Seat, EPDM, Stainless Steel Hardware

A050-NP3-TT3T-S70
NPT, PTFE Diaphragm, PTFE Ball, Stainless Steel Seat, PTFE O-Ring, Stainless Steel Hardware

A050-BP3-TT3T-S70
BSPT, PTFE Diaphragm, PTFE Ball, Stainless Steel Seat, PTFE O-Ring, Stainless Steel Hardware

Liquid Port Size: 1 in.  
Liquid Connection Types: FNPT, FBSPT  
Standard Suction Port: Center Front  
Standard Discharge Port: Center Rear  
Air Inlet Connection Size: 1/4 in. FNPT  
Air Exhaust Connection Size: 3/4 in. FNPT  
  Aluminum Stainless Steel
Max Height: 12.4 in. (315 mm) 12.4 in. (315 mm)
Max Width: 13.0 in. (330 mm) 13.0 in. (330 mm)
Max Depth: 8.4 in. (213 mm) 8.4 in. (213 mm)
Weight: 18 lbs (8 kg) 38 lbs (17 kg)
 
Max Flow: 48 gpm (182 lpm)
Max Air Pressure: 120 psi (8.2 bar)
Max Static Suction Head: 23 ft-H2O (7.0 m-H2O)
Max Suction Lift (Dry): 17 ft-H2O (5.2 m-H2O)
Max Suction Lift (Wet): 30 ft-H2O (9.1 m-H2O)
Max Solids: 1/4 in. (6.4 mm)
Avg. Displacement Per Stroke: (0.07 G / 0.28 l)
Sound Level: 80 dBA (with Muffler)
 
Wet End: Aluminum, Anodized Aluminum, Stainless Steel
Air End: Aluminum, PTFE Coated Aluminum
Diaphragm: Buna-N, Geolast®, PTFE, Santoprene®, Viton® / FKM
Balls: Buna-N, EPDM, Geolast®, PTFE, Santoprene®, Stainless Steel, Viton® / FKM
Seats: Aluminum, Nylon, Polypropylene, Stainless Steel
O-Rings: Buna-N, EPDM, PTFE, Viton® / FKM
Hardware: Stainless Steel, Plated Steel
Muffler: Metal, Plastic

Aluminum

A100-NAA-GTPN-B30
NPT, Geolast® Diaphragm, PTFE Ball, Polypropylene Seat, Buna-N O-Ring, Zinc Plated Hardware

A100-BAA-GTPN-B30
BSPT, Geolast® Diaphragm, PTFE Ball, Polypropylene Seat, Buna-N O-Ring, Zinc Plated Hardware

A100-NAA-SSPE-B30
NPT, Santoprene® Diaphragm, Santoprene® Ball, Polypropylene Seat, EPFM O-Ring, Zinc Plated Hardware

A100-BAA-SSPE-B30
BSPT, Santoprene® Diaphragm, Santoprene® Ball, Polypropylene Seat, EPFM O-Ring, Zinc Plated Hardware

A100-NAA-TTYT-B30
NPT, PTFE Diaphragm, PTFE Ball, Nylon Seat, PTFE O-Ring, Zinc Plated Hardware

A100-BAA-TTYT-B30
BSPT, PTFE Diaphragm, PTFE Ball, Nylon Seat, PTFE O-Ring, Zinc Plated Hardware

 

Stainless Steel

A100-NA3-GT3N-B70
NPT, Geolast® Diaphragm, PTFE Ball, Stainless Steel Seat, Buna-N O-Ring, Stainless Steel Hardware

A100-BA3-GT3N-B70
BSPT, Geolast® Diaphragm, PTFE Ball, Stainless Steel Seat, Buna-N O-Ring, Stainless Steel Hardware

A100-NA3-SS3E-B70
NPT, Santoprene® Diaphragm, Santoprene® Ball, Stainless Steel Seat, EPFM O-Ring, Stainless Steel Hardware

A100-BA3-SS3E-B70
BSPT, Santoprene® Diaphragm, Santoprene® Ball, Stainless Steel Seat, EPFM O-Ring, Stainless Steel Hardware

A100-NA3-TT3T-B70
NPT, PTFE Diaphragm, PTFE Ball, Stainless Steel Seat, PTFE O-Ring, Stainless Steel Hardware

A100-BA3-TT3T-B70
BSPT, PTFE Diaphragm, PTFE Ball, Stainless Steel Seat, PTFE O-Ring, Stainless Steel Hardware

Liquid Port Size: 1 1/2 in.    
Liquid Connection Types: FNPT, FBSPT, ANSI / DIN Flanged    
Standard Suction Port: Center Front    
Standard Discharge Port: Center Rear    
Air Inlet Connection Size: 3/4 in. FNPT    
Air Exhaust Size: 1 1/4 in. FNPT    
  Aluminum Stainless Steel Threaded Stainless Steel Flanged
Max Height: 17.3 in. (439 mm) Threaded 17.3 in. (439 mm) 23.9 in. (607 mm)
Max Width: 20.8 in. (528 mm) Threaded 20.8 in. (528 mm) 18.8 in. (478 mm)
Max Depth: 11.2 in. (284 mm) 11.2 in. (284 mm) 11.2 in. (284 mm)
Weight: 45 lbs (20 kg) 70 lbs (32 kg) 84 lbs (38 kg)
 
Max Flow: 115 gpm (435 lpm)
Max Air Pressure: 120 psi (8.2 bar)
Max Static Suction Head: 23 ft-H2O (7.0 m-H2O)
Max Suction Lift (Dry): 22 ft-H2O (6.4 m-H2O)
Max Suction Lift (Wet): 31 ft-H2O (9.4 m-H2O)
Max Solids: 1/4 in. (6.4 mm)
Avg. Displacement Per Stroke: (0.30 G / 1.15 l)
Sound Level: 80 dBA (with Muffler)
 
Wet End: Aluminum, Anodized Aluminum, Stainless Steel
Air End: Aluminum, Stainless Steel
Diaphragm: Buna-N, EPDM, Geolast®, PTFE, Santoprene®, Viton® / FKM
Balls: Buna-N, EPDM, Geolast®, PTFE, Santoprene®, Stainless Steel, Viton® / FKM
Seats: Aluminum, Polypropylene, Stainless Steel
O-Rings: Buna-N, EPDM, PTFE, Viton® / FKM
Hardware: Plated Steel, Stainless Steel
Muffler: Metal, Plastic

Aluminum

A150-NAA-GTPN-B30
NPT, Geolast® Diaphragm, PTFE Ball, Polypropylene Seat, Buna-N O-Ring, Zinc Plated Hardware

A150-BAA-GTPN-B30
BSPT, Geolast® Diaphragm, PTFE Ball, Polypropylene Seat, Buna-N O-Ring, Zinc Plated Hardware

A150-NAA-SSPE-B30
NPT, Santoprene® Diaphragm, Santoprene® Ball, Polypropylene Seat, EPFM O-Ring, Zinc Plated Hardware

A150-BAA-SSPE-B30
BSPT, Santoprene® Diaphragm, Santoprene® Ball, Polypropylene Seat, EPFM O-Ring, Zinc Plated Hardware

A150-NAA-TTYT-B30
NPT, PTFE Diaphragm, PTFE Ball, Nylon Seat, PTFE O-Ring, Zinc Plated Hardware

A150-BAA-TTYT-B30
BSPT, PTFE Diaphragm, PTFE Ball, Nylon Seat, PTFE O-Ring, Zinc Plated Hardware

Stainless Steel

A150-F33-GT3N-B70
ANSI/DIN Flange, Geolast® Diaphragm, PTFE Ball, Stainless Steel Seat, Buna-N O-Ring, Stainless Steel Hardware

A150-F33-SS3E-B70
ANSI/DIN Flange, Santoprene® Diaphragm, Santoprene® Ball, Stainless Steel Seat, EPFM O-Ring, Stainless Steel Hardware

A150-F33-TT3T-B70
ANSI/DIN Flange, PTFE Diaphragm, PTFE Ball, Stainless Steel Seat, PTFE O-Ring, Stainless Steel Hardware

Liquid Port Size: 2 in.  
Liquid Connection Types: FNPT, FBSPT, ANSI / DIN Flanged  
Standard Suction Port: Center Front  
Standard Discharge Port: Center Rear  
Air Inlet Connection Size: 3/4 in. FNPT  
Air Exhaust Connection Size: 1-1/4 in. FNPT  
  Aluminum Stainless Steel
Max Height: 26.3 in. (668 mm) 29.5 in. (749 mm)
Max Width: 19.6 in. (498 mm) 19.2 in. (488 mm)
Max Depth: 13.5 in. (343 mm) 14.9 in. (378 mm)
Weight: 62 lbs (28 kg) 130 lbs (59 kg)
 
Max Flow: 190 gpm (719 lpm)
Max Air Pressure: 120 psi (8.2 bar)
Max Static Suction Head: 23 ft-H2O (7.0 m-H2O)
Max Suction Lift (Dry): 24.4 ft-H2O (7.4 m-H2O)
Max Suction Lift (Wet): 31.7 ft-H2O (9.7 m-H2O)
Max Solids: 1/4 in. (6.4 mm)
Avg. Displacement Per Stroke: (0.62 G / 2.34 l)
Sound Level: 80 dBA (with Muffler)
 
Wet End: Aluminum, Anodized Aluminum, Stainless Steel
Air End: Aluminum, Stainless Steel
Diaphragm: Buna-N, EPDM, Geolast®, PTFE, Santoprene®, Viton® / FKM
Balls: Buna-N, EPDM, Geolast®, PTFE, Santoprene®, Stainless Steel, Viton® / FKM
Seats: Stainless Steel, Aluminum, Nylon, Polypropylene
O-Rings: Buna-N, EPDM, PTFE, Viton® / FKM
Hardware: Plated Steel, Stainless Steel
Muffler: Metal, Plastic

Aluminum

A200-NAA-GTPN-B30
NPT, Geolast® Diaphragm, PTFE Ball, Polypropylene Seat, Buna-N O-Ring, Zinc Plated Hardware

A200-BAA-GTPN-B30
BSPT, Geolast® Diaphragm, PTFE Ball, Polypropylene Seat, Buna-N O-Ring, Zinc Plated Hardware

A200-NAA-SSPE-B30
NPT, Santoprene® Diaphragm, Santoprene® Ball, Polypropylene Seat, EPDM O-Ring, Zinc Plated Hardware

A200-BAA-SSPE-B30
BSPT, Santoprene® Diaphragm, Santoprene® Ball, Polypropylene Seat, EPDM O-Ring, Zinc Plated Hardware

A200-NAA-TTYT-B30
NPT, PTFE Diaphragm, PTFE Ball, Polypropylene Seat, PTFE O-Ring, Zinc Plated Hardware

A200-BAA-TTYT-B30
NPT, PTFE Diaphragm, PTFE Ball, Polypropylene Seat, PTFE O-Ring, Zinc Plated Hardware

Stainless Steel

A200-C33-GG3N-B70
NPT & ANSI/DIN Flange, Geolast® Diaphragm, Geolast® Ball, Stainless Steel Seat, Buna-N O-Ring, Stainless Steel Hardware

A200-C33-SS3E-B70
NPT & ANSI/DIN Flange, Santoprene® Diaphragm, Santoprene® Ball, Stainless Steel Seat, EPDM O-Ring, Stainless Steel Hardware

A200-C33-TT3T-B70
NPT & ANSI/DIN Flange, PTFE Diaphragm, PTFE Ball, Stainless Steel Seat, PTFE O-Ring, Stainless Steel Hardware

Liquid Port Size: 3 in.  
Liquid Connection Types: FNPT, FBSPT, ANSI / DIN Flanged  
Standard Suction Port: Center Front  
Standard Discharge Port: Center Rear  
Air Inlet Connection Size: 3/4 in. FNPT  
Air Exhaust Connection Size: 3/4 in. FNPT  
  Aluminum Stainless Steel
Max Height: 32.6 in. (827 mm) 32.6 in. (827 mm)
Max Width: 24.8 in. (630 mm) 24.8 in. (630 mm)
Max Depth: 16.8 in. (425 mm) 16.8 in. (425 mm)
Weight: 135 lbs (62 kg) 300 lbs (136 kg)
 
Max Flow: 235 gpm (890 lpm)
Max Air Pressure: 120 psi (8.2 bar)
Max Static Suction Head: 23 ft-H2O (7.0 m-H2O)
Max Suction Lift (Dry): 20 ft-H2O (6.1 m-H2O)
Max Suction Lift (Wet): 31 ft-H2O (9.4 m-H2O)
Max Solids: 7/16 in. (11 mm)
Avg. Displacement Per Stroke: (0.98 G / 3.70 l)
Sound Level: 80 dBA (with Muffler)
 
Wet End: Aluminum, Anodized Steel, Stainless Steel
Air End: Aluminum, PTFE Coated Aluminum
Diaphragm: Buna-N, Geolast®, PTFE, Santoprene®, Urethane, Viton® / FKM
Balls: Buna-N, EPDM, Geolast®, PTFE, Santoprene®, Viton® / FKM
Seats: Buna-N (Integral Seat & O-Ring), EPDM (Integral Seat & O-Ring), Nylon, Stainless Steel, Viton® / FKM (Integral Seat & O-ring)
O-Rings: Buna-N, EPDM, PTFE, Viton® / FKM
Hardware: Plated Steel, Stainless Steel
Muffler: Metal, Plastic

Aluminum

A300-NAA-GTNN-B30
NPT, Geolast® Diaphragm, PTFE Ball, Buna-N Seat With Integrated O-Ring, Zinc Plated Hardware

A300-BAA-GTNN-B30
BSPT, Geolast® Diaphragm, PTFE Ball, Buna-N Seat With Integrated O-Ring, Zinc Plated Hardware

A300-NAA-SSEE-B30
NPT, Santoprene® Diaphragm, Santoprene® Ball, EPDM Seat With Integrated O-Ring, Zinc Plated Hardware

A300-BAA-SSEE-B30
BSPT, Santoprene® Diaphragm, Santoprene® Ball, EPDM Seat With Integrated O-Ring, Zinc Plated Hardware

A300-NAA-TTYT-B30
NPT, PTFE Diaphragm, PTFE Ball, Nylon Seat, PTFE O-Ring, Zinc Plated Hardware

A300-BAA-TTYT-B30
BSPT, PTFE Diaphragm, PTFE Ball, Nylon Seat, PTFE O-Ring, Zinc Plated Hardware

 

Stainless Steel

A300-FA3-GT3N-B70
ANSI/DIN Flange, Geolast® Diaphragm, PTFE Ball, Stainless Steel Seat, Buna-N O-Ring, Stainless Steel Hardware

A300-FA3-SS3E-B70
ANSI/DIN Flange, Santoprene® Diaphragm, Santoprene® Ball, Stainless Steel Seat, EPDM O-Ring, Stainless Steel Hardware

A300-FA3-TT3T-B70
ANSI/DIN Flange, PTFE Diaphragm, PTFE Ball, Stainless Steel Seat, PTFE O-Ring, Stainless Steel Hardware

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