4-2520-261D-503

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Viking Pump
126A Series Ductile Iron Internal Gear Pumps
4-2520-261D-503

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4-2520-261D-503

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Viking Pumps 4-2520-261D-503 126A Series Universal Product Line Internal Gear Pump, KK126A DUC CGCG HTRV 2"T, Ductile Iron, Ductile Iron Fitted, Non-Jacketed. 2" NPT 90° Ports. Ductile Iron Casing, Head, Bracket, Idler & Rotor, Hardened Steel Idler Pin, Carbon Graphite Bracket & idler Bushings, Steel Rotor Shaft, Ductile Iron High Temperature Relief Valve. Braided PTFE Packed Stuffing Box Seal. 100 GPM Nominal Flow, 780 Max RPMs, 200 PSI Maximum Pressure, Up to 450° F (230° C).

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Item: 4-2520-261D-503

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Series Info
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4-2520-261D-503

Base Model Number	KK126A
Bracket Bushing	Carbon Graphite
Bracket Material	Ductile Iron, ASTM A536 Grade 60-40-18
Build	Ductile Iron Fitted
Casing Material	Ductile Iron, ASTM A536 Grade 60-40-18
Configuration	90° Ports
Connection Type	NPT
Fluid Port	2"
Head / Fittings	Ductile Iron, ASTM A536 Grade 60-40-18 Head
Idler Bushing	Carbon Graphite
Idler Material	Ductile Iron ASTM A536 Grade 60-40-18
Idler Pin Material	Hardened Steel, ASTM A108, Grade 1045
Jacketing	Non-Jacketed
Material	Ductile Iron
Maximum Operating Temperature	Up to 450° F (230° C)
Maximum Working Pressure (PSIG)	200 PSI
Model Series	126A Series

Mounting Type	Foot Mount
Nominal Flow	100 GPM
Pressure Rating BAR	14
Quick Specs	KK126A DUC CGCG HTRV 2"T
Rotar Material	Ductile Iron ASTM A536 Grade 60-40-18
Rotor Shaft Material	Steel, ASTM A108, Grade 1045
Seal Code	_
Seal Location	Stuffing Box Seal
Shaft Seal Material	Braided PTFE
Shaft Seal Type	Packing
Size	KK
Speed (RPM)	780
Type	Internal Gear Pumps
Valve / Seat / O-Ring	Ductile Iron, ASTM A536 Grade 60-40-18 Valve
Valve Type	High Temperature Relief Valve

126A Series Ductile Iron Internal Gear Pumps Information

Product Type
Gear, Positive Displacement
Features & Benefits
Positive displacement internal gear pumping principle handles a broad range of viscosities with constant flow rate. Axial rotor thrust is controlled by double row ball bearing or tapered roller bearings; a bushing provides a secondary point of radial shaft support. Rotatable bearing housing provides easy rotor end clearance adjustment for viscosity or to compensate wear
General Description
Viking's 126A Series™ internal gear pump is the most versatile line of internal gear pumps due to the availability of many design and other options. It can handle a broad range of viscosities with constant flow rate up to 500 GPM (114 m³/h).
Materials of Construction
Casing - Ductile Iron, ASTM A536 Grade 60-40-18 Head - Ductile Iron, ASTM A536 Grade 60-40-18 Bracket - Ductile Iron, ASTM A536 Grade 60-40-18 Idler - ①② Cast Iron, ASTM A48, Class 35B Rotor: Standard ③ Cast Iron, ASTM A48, Class 35B, Steel Fitted ④ Steel, ASTM A148, Grade 80-40 Shaft - ⑤ Steel, ASTM A108, Grade 1045 Idler Pin - Hardened Steel, ASTM A108, Grade 1045 Idler Bushing - (126A) Bronze, ASTM B584 (B505), Alloy C93700 Bracket Bushing - (126A) Bronze, ASTM B584 (B505), Alloy C93700 Pressure Relief Valve - ⑥ Ductile Iron, ASTM A536 Grade 60-40-18 Standard Packing (126A) - Braided PTFE