1/2" Stainless Steel Diaphragm Pump

NOMAD TRANS-FLO GOLD air-operated double diaphragm (AODD) pump 

Key Identification from the Label 

P/N: 15-2991  
Model code: NTG15/SPPB/TF/TF/STF/TC 
Description: TRANS-FLO GOLD Diaphragm Pump  
S/N: 5  
Assembled and tested in the USA (with CE marking) 

For sale is a used 1/2-inch (15 mm) stainless steel AODD pump from the NOMAD brand (a product line of JDA Global Pump LLC) (Wilden).  

TRANS-FLO GOLD uses a simple, non-stalling air distribution system with a patent-pending differential cap design and Tracker™ shaft seals for reliable on/off shifting and performance in demanding conditions (mining, construction, industrial utility applications). It has relatively few moving parts for easier maintenance. 

Main Specifications 

Feature  Detail 
Size / Porting  1/2\" (0.5\") Tri-Clamp (sanitary-style) 
Wetted parts  316 stainless steel 
Air chambers / Center block  Polypropylene 
Air valve  Brass 
Diaphragms  BUNA 
Valve balls  PTFE 
Valve seats  Stainless steel 316 
Valve seat O-rings  PTFE 
Max flow rate  53 LPM or 3,180 LPH 
Max discharge pressure  120 psi 
Max air inlet pressure  125 psi 
Displacement per stroke  0.014 gal (0.05 L) 
Max solids handling  1/16\" (0.0625\" / ?2 mm) 
Air inlet  1/4\" 
Approx. dimensions  ~7\" L × 8\" W × 9\" H 
Est. weight (SS)  9 kg 
Suction Lift (Dry)  ~4 ft (1.2 m) 
Suction Lift (Wet)  30 ft (9.1 m) 

Typical Applications & Benefits 

Handles a wide range of fluids, including those with solids/slurries (up to the solids size limit).  
Self-priming, runs dry without damage, good for shear-sensitive products.  
Suitable for food/beverage, chemical, pharmaceutical, or sanitary processes thanks to the Tri-Clamp ports and 316SS construction (common in hygienic or cleanable setups).  
Simple design ? easier maintenance and lower cost than many OEM equivalents.  
Non-stalling air system for consistent performance. 

 

Unit is in good condition and runs well.