NOMAD TRANS-FLO GOLD NTG50 2" aluminum PTFE-fitted air-operated double diaphragm pump, clamped (MPN 50-2691)

Description

The NOMAD Trans-Flo Gold NTG50 (model 50-2691) is a 2" (51 mm) aluminum, PTFE-fitted air-operated double diaphragm (AODD) pump that moves up to 141 gpm (534 lpm), runs on up to 125 psig (8.6 bar) of compressed air and passes solids up to 1/4" (6.4 mm). This clamped, NPT-ported standard build is a Trans-Flo Gold pump built for rugged outdoor duty and lower-quality air.

Aluminum wetted parts give a lightweight, durable metallic pump that is commonly chosen for oils, fuels, lubricants, paints and many water-based fluids; aluminum is generally not used for strong acids or caustics. PTFE has the broadest chemical resistance of the standard diaphragm materials and is the usual choice for aggressive chemicals and solvents; on this build the PTFE diaphragm is backed by a Neoprene diaphragm. Always confirm chemical compatibility with your fluid before ordering - Tank Supply Direct can check it for you.

Key Features

• Anodized aluminum piston-style air valve system
• Built for mining, construction, marine and utility work
• Tolerates lower-quality, unfiltered plant or compressor air
• Aluminum wetted parts, PTFE diaphragms - standard NOMAD build 50-2691
• Clamped construction - quick teardown for diaphragm and check-valve service
• ATEX-designated build (model suffix X) for potentially explosive atmospheres
• Air-operated, no electric motor - flow adjusts with the air supply; no motor or controls at the pump
• Self-priming - suction lift 12' dry / 31' wet

Specifications

• Model / MPN: 50-2691
• Series: NOMAD Trans-Flo Gold
• Liquid inlet/outlet: 2" (51 mm), NPT
• Air inlet: 3/4" (19 mm)
• Maximum flow rate: 141 gpm (534 lpm)
• Maximum air supply pressure: 125 psig (8.6 bar)
• Maximum solids passage: 1/4" (6.4 mm)
• Displacement per stroke: 0.40 gal (1.51 L)
• Suction lift: 12' dry / 31' wet
• Temperature range (PTFE elastomers, per NOMAD): 40°F to 220°F (4.4°C to 104.4°C)
• Dimensions (D x W x H): 13.5" x 15.9" x 26.3"
• Weight (per NOMAD manual): 72 lb

Construction

• Wetted body / manifolds: Aluminum
• Air chambers: Aluminum
• Center section: Aluminum
• Air valve: Brass
• Diaphragms: PTFE (Neoprene back-up)
• Check balls: PTFE
• Seats: Aluminum
• O-rings: PTFE
• Assembly: Clamped
• Manufacturer: NOMAD pumps by JDA Global

Applications

NOMAD lists these industries for this pump: Automotive, Ceramics, Chemical, electronics/semiconductor, Food/Beverage, Mining/Construction, Petroleum, Pharmaceutical, Wastewater.

Pwr-Flo or Trans-Flo? NOMAD positions Trans-Flo for rugged outdoor work such as mining, marine and construction. It tolerates lower-quality, unfiltered compressed air and is the simpler series to maintain in the field.

Common Questions

How many gallons per minute does the NOMAD NTG50 pump?
The NOMAD NTG50 is rated up to 141 gpm (534 lpm) at a maximum 125 psig (8.6 bar) air supply. Actual flow drops with discharge pressure, suction lift and fluid viscosity - use the NOMAD performance curve in the product images to size it for your duty point.

What does "PTFE-fitted" mean, and when should I choose a different material?
The diaphragms and check balls are PTFE. PTFE has the broadest chemical resistance of the standard diaphragm materials and is the usual choice for aggressive chemicals and solvents; on this build the PTFE diaphragm is backed by a Neoprene diaphragm.

What air supply does it need?
Connect clean, dry compressed air to the 3/4" (19 mm) air inlet; do not exceed 125 psig (8.6 bar). Flow and discharge pressure rise and fall with the air pressure you supply.

Is this pump available in other configurations?
Yes. NOMAD also builds this model with other wetted materials (Stainless Steel); port connections (BSP, Tri-Clamp). This listing is the standard build; call or email Tank Supply Direct for a quote on any other configuration.

How fast does it ship?
The standard build ships from Nevada in approximately 4 days. Shipping is calculated at checkout.

Manufacturer Documents

• NOMAD NTG50 operation manual (PDF)
• NOMAD product page

Shipping and Warranty

• Manufacture Lead Time: Approximately 4 days
• Ships From (State): NV

Products are subject to freight or parcel shipping costs. Shipping charges are calculated at checkout based on delivery location, product size, weight, and carrier requirements.

Warranty Information
Warranty coverage varies by manufacturer and product type. For warranty details or to initiate a warranty claim, please contact Tank Supply Direct at info@tanksupplydirect.com.