Gorman Rupp T3A3S-B Pump
Spare Parts for T3A3S-B Self Priming Pump
Product Summary
The Gorman-Rupp Super T Series T3A3S-B is a rugged self-priming centrifugal pump engineered for demanding applications involving liquids with large entrained solids and slurries. Featuring proven performance in municipal wastewater, mining, industrial processing, and construction dewatering, this pump delivers reliable operation with minimal maintenance requirements and exceptional solids-handling capability.
- Superior Solids Handling: Handles up to 2.5-inch diameter spherical solids with 3-inch suction and 1.5-inch BSP discharge connections, ideal for sewage bypass, mine dewatering, and industrial slurry applications
- True Self-Priming Design: Achieves 6-meter maximum suction lift with fast repriming capability, eliminating need for foot valves in most applications and enabling flexible installation configurations
- Heavy-Duty Construction: Cast iron or optional stainless steel components with hardened wear surfaces, mechanical cartridge seal, and pressure relief valve protection for extended service life in abrasive environments
- Field-Serviceable Design: Simple back cover removal provides full access to wear plate, impeller, and seal without disconnecting piping, minimizing downtime for routine maintenance and repairs
- Multiple Drive Options: Available with electric motor (240V single-phase or 415V three-phase), engine drive, or bare shaft configuration with flexible coupling or V-belt drive arrangements
Spare Parts List
| Select | Qty | Part Number | Description | Material / Spec |
|---|---|---|---|---|
| 1 | 44163-259 | Repair Rotating Assembly (Complete) | Includes impeller, seal, bearings, shaft - Standard model | |
| 1 | 44163-304 | Repair Rotating Assembly (/WW Variant) | For wastewater applications | |
| 1 | 44163-270 | Repair Rotating Assembly (/WWS Variant) | Stainless steel for wastewater | |
| 1 | 11406 | Impeller | Open recessed non-clog design, cast iron | |
| 1 | 46513-150 | Cartridge Seal Assembly (Standard) | Complete mechanical seal with sleeve | |
| 1 | 11407A | Wear Plate Assembly | Replaceable impeller wear surface | |
| 1 | 11837D | Seal Plate | Seal mounting surface, cast iron | |
| 1 | 38514-563 | Impeller Shaft | Hardened alloy steel | |
| 1 | 46411-060 | Flap Valve Assembly (Check Valve) | Suction check valve, complete assembly | |
| 1 | S1749 | Ball Bearing (Inboard) | Shielded ball bearing | |
| 1 | 23252-013 | Ball Bearing (Outboard) | Shielded ball bearing with snap ring | |
| 3 | S1352 | Oil Seal | Lip seal (set of 3 required) | |
| 1 | 38251-410 | Bearing Housing | Cast iron housing | |
| 1 | 42111-801 | Back Cover Plate Assembly | Includes pressure relief valve | |
| 1 | 26662-005 | Pressure Relief Valve | Safety relief valve (replace at each overhaul) | |
| 1 | 38322-219 | Bearing Cap | Outboard bearing cover | |
| 1 | 10959G | Gasket (Seal Plate) | Seal plate gasket | |
| 1 | 38683-268 | Bearing Cap Gasket | Bearing cap sealing gasket | |
| 2 | S1748 | O-Ring (Housing/Back Cover) | Nitrile rubber O-ring (set of 2) | |
| 1 | 25154-447 | O-Ring (Viton - Chemical Resistant) | For chemical applications | |
| 1 | N0608 | Shaft Key | Drive shaft key | |
| 1 | 31167-029 | Impeller Washer | Hardened impeller thrust washer | |
| 1 | S244 | Snap Ring | Bearing retaining snap ring | |
| 1 | 37J | Impeller Adjustment Shim Set | For setting impeller-to-seal plate clearance | |
| 1 | 48711-020 | Disassembly Tool (Optional) | For rotating assembly removal |
Exploded Parts Views
Key Technical Specifications
| Parameter | Value |
|---|---|
| Model / Series | T3A3S-B Super T Series (Including /F, /FM, /WW, /WWS variants) |
| Flow Performance | See performance curve (Page E-1 of manual) - Varies by speed and head |
| Rated Power | Varies by application (Typical motor: 1.25-2.5 kW) |
| Voltage / Frequency | 240V Single-Phase / 415V Three-Phase, 50Hz (Other voltages available) |
| Suction / Discharge Connection | 3" Suction / 1.5" BSP Discharge (Optional ASA or DIN flanges available) |
| Maximum Suction Lift | 6 metres (20 feet) |
| Solids Handling Capability | Up to 2.5" (63.5mm) diameter spherical solids |
| Maximum Liquid Temperature | 160°F (71°C) |
| Impeller Type | Open Recessed Non-Clog Centrifugal |
| Rotation Direction | Counterclockwise (viewed from impeller end) |
| Seal Type | Cartridge Mechanical Seal (Standard), Optional packing available |
| Materials of Construction | Cast Iron (Standard), Stainless Steel options available (/WWS variant) |
| Installation Type | Horizontal Baseplate Mounted, Self-Priming |
Troubleshooting, Common Faults & Solutions
Pump Fails to Prime
Likely Cause: Strainer clogged, suction lift too high, leaking seal or gasket, collapsed suction hose lining, or air leak in suction line
Action / Part: Clean strainer, verify suction lift within 6m maximum, check pump vacuum (should pull 20" Hg or more), replace leaking seal (46513-150) or gaskets (10959G, S1748), replace collapsed suction hose, seal all suction line connections with pipe dope
Pump Stops or Fails to Deliver Rated Flow/Pressure
Likely Cause: Air leak in suction, worn seal/gasket, insufficient liquid in casing, contaminated check valve, plugged air release valve, clogged impeller, discharge head too low, or worn impeller/wear plate
Action / Part: Seal suction leaks, replace seal (46513-150) or gaskets, refill pump casing through fill cover (priming), clean/replace check valve assembly (46411-060), clear air release valve/piping, remove impeller debris, adjust discharge valve, check impeller-to-wear plate clearance (.010-.020"), replace worn impeller (11406) and/or wear plate assembly (11407A)
Pump Requires Too Much Power
Likely Cause: Pump speed too high, discharge head too low, liquid too thick
Action / Part: Check driver output speed, verify sheaves/couplings correctly sized, adjust discharge valve to increase head, dilute liquid if possible, open discharge valve fully and run at maximum governed speed
Pump Clogs Frequently
Likely Cause: Strainer clogged, check valve binding, suction lift too high, impeller clogged/damaged, pump speed too slow, or suction intake not properly submerged
Action / Part: Clean strainer regularly, clean check valve (46411-060), verify suction lift within 6m, clear impeller debris or replace if damaged (11406), check driver output for proper speed, verify belts/couplings not slipping, ensure suction intake submerged per manual Figure 2 specifications
Excessive Noise / Cavitation
Likely Cause: Cavitation (air in liquid, blocked foot valve/strainer, restriction in line, excessive suction lift), pump not securely mounted, or pumping entrained air
Action / Part: Reduce suction lift and friction losses, clean foot valve/strainer, record vacuum/pressure gauge readings (consult factory if needed), secure all mounting hardware, eliminate air bubble source, verify proper suction pipe submergence
Bearings Run Too Hot
Likely Cause: Low/incorrect lubricant, drive misaligned, pump speed too high, bearing frozen, or piping not properly supported
Action / Part: Note: Bearings normally run to 160°F (71°C). Check SAE No. 30 non-detergent oil level via sight gauge (14A) - maintain at middle of gauge, align drive properly (see manual Section B), reduce power source speed, check/replace bearings (S1749, 23252-013) if frozen, support suction/discharge lines independently
Seal Leakage
Likely Cause: Worn/damaged cartridge seal, insufficient seal cavity lubrication, or contaminated seal faces
Action / Part: Replace complete cartridge seal assembly (46513-150) - never reuse old seal, fill seal cavity with SAE No. 30 non-detergent oil to middle of sight gauge (14), verify seal plate gasket (10959G) not leaking, check O-rings (S1748) for damage
Pump Overheats / Pressure Relief Valve Activates
Likely Cause: Operating against closed discharge valve, insufficient flow, liquid temperature exceeds 160°F (71°C), or pump running dry
Action / Part: CRITICAL: Stop pump immediately if overheated - allow complete cooling before servicing. Never remove covers/plugs from hot pump. Open discharge valve, verify sufficient flow, cool liquid if over 160°F, refill pump casing if run dry (priming), replace pressure relief valve (26662-005) after any overheating event
Incorrect Rotation (Three-Phase Motors)
Likely Cause: Three-phase wiring incorrect
Action / Part: CRITICAL: Correct rotation is counterclockwise when facing impeller. Running pump in reverse will cause impeller to unscrew from shaft, causing severe damage. Disconnect pump from motor before checking rotation. Have qualified electrician interchange any two of three phase wires to change direction
Online Resources
Request for Quotation
Thank you!
Your Request for Quote has been successfully sent.
Our team is reviewing your requirements and will be in touch shortly.
Selected Parts:
- No parts selected