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SuntecFuel oil pump

Suntec PUMP B-4000 – Two-stage, one-step pump

SUNTEC B-4000B model contains a high single pipe lift capacity and a unique hydraulic dual safety cut-on/off driven by : - A motor speed dependent device - A solenoid by-passing valve Cut-on is operated when both…

SKU 3G-OTH-02689

Also listed as: B4000 · B 4000

Brand
Suntec
Item
PUMP B-4000 – Two-stage, one-step pump
Category
Fuel oil pump
Available to Order
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Suntec
Model/Type
Two-stage, one-step pump
Compatible fuels
#2, B100, #1

Datasheet Content

[{"filename":"B-4000B_US_Ed3_nov-2024.pdf","text":"SOLENOID\n TWO STAGE PUMP B-4000B\nSUNTEC B-4000B model contains a high single pipe lift capacity and a unique hydraulic B-4000B - US - Ed. 3 - November 2024\ndual safety cut-on/off driven by :\n- A motor speed dependent device PUMP\n- A solenoid by-passing valve IDENTIFICATION\nCut-on is operated when both mechanisms are released. Cut-off occurs when the speed\ndecrease or the solenoid valve is de-energized.\nThe first stage gear set sucks the fuel from the line, and the second stage gear set pressurizes\nthe fuel.\nThis unit is supplied for 1-pipe operation, without by-pass plug installed. Please verify\nbefore installation. Two stages\n\n\nCOMPATIBILITY Rated motor speed : 3450 rpm\n\nFuel oil #2 and lighter, B6-B100 (blends from 6% up to 100% biodiesel, per ASTM D396). Strainer: See technical data\n\nPUMP OPERATING PRINCIPLE Shaft rotation\n and nozzle location\nAs the motor starts, the fuel from the second stage gearset flowing through the cone valve (seen from shaft end)\ncreates a pressure drop across the diaphragm valve. When the pressure difference is A :clockwise rotation/\nsufficient to overcome the spring force, the diaphragm valve closes and the fuel is routed right hand nozzle. (RH-RH)\nto the piston chamber. B : clockwise rotation/\n left hand nozzle.(RH-LH)\nIf the solenoid valve (Normally Open) is :\n C :anti clockwise rotation/\n • Opened (de-energized), the fuel flows through the by-pass channel, no pressure will left hand nozzle.(LH-LH)\n then be built up. The piston will not release the fuel flow through the nozzle. D :anti clockwise rotation/\n • Closed (energized) and the diaphragm valve is closed, the pressure is built up causing right hand nozzle.(LH-RH)\n the piston to open and the fuel flow through the nozzle.\nThe piston spring is adjusted such that a given nozzle pressure can be maintained while\nany resulting excess fuel is dumped.\nWhen the solenoid valve is open (de-energized), the valve opens, closing the piston at full\noperating speed, shutting fuel off the nozzle. B 2 V A 4006 B 8\nOne pipe installation :\nThe by-pass plug must not be installed. The excess fuel is returned back to the inlet.\nTwo pipe installation :\n Identification number\nThe steel plug of the return port must be removed and the by-pass plug must be inserted\nin the return port allowing excess fuel is bypassed back to the tank. The return plug must B: B6-B100 applications\nnot be reinstalled.\n Revision\nBleed :\nIn one pipe operation, the easy flow bleeder valve must be loosened to bleed the system.\nBleeding in two pipe operation is automatic, but it may be accelerated by loosening the\neasy flow bleeder.\n\n\n Solenoid valve Solenoid valve\n \"closed\" or \"open\" or\n energized position N = Non delay de-energized position\n\n\n\n\n Nozzle port Nozzle port\n Pressure\n adjusting Pressure adjusting\n screw screw\n\n Piston assembly\n Piston assembly\n\n Positive High speed models\n Cone\n strainer to strainer\n valve\n Intake Low speed models\n from tank to seal chamber\n Lip seal\n Second stage High pressure oil\n Gearset\n Easy flow High pressure oil\n To Shaft\n bleed valve\n strainer Low pressure oil\n Diaphragm\n valve\n Return oil\n By-pass plug\n First stage gearset Inlet oil\n Return to tank\n\n Suntec Industries Incorporated - 60 Aberdeen Drive - Glasgow, KY 42141 - USA\n Tel : 270 651 7116 - www.suntecpumps.com\n\f TECHNICAL DATA\n\n General Hydraulic data\n\n Mounting Flange mounting Nozzle pressure range 100 - 150 psi (#2 fuel and lighter)\n 150 - 200 psi (#2 fuel)\n Connection threads\n Inlet 1/4 NPTF Delivery pressure setting 100 psi\n Nozzle outlet 1/8 NPTF\n Pressure gauge port 1/8 NPTF Rated nozzle flow 4 GPH @100 - 150 psi (#2 fuel oil and\n Bleeder valve port 1/8 NPTF lighter fuel)\n 3 GPH @150 - 200 psi (#2 fuel oil)\n Valve function Pressure regulation\n Oil temperature 32 - 140°F\n Cut-off Motor speed dependent\n Ambiant temperature 32 - 140°F\n Strainer open area V = min 3 in 2\n\n Inlet and return pressures 10 psi max.\n NFPA limits pressures to 3 psi max\n Shaft 5/16 in\n\n Suction height Single pipe: 6\" Hg max. vacuum,\n By-pass plug Not inserted in return port, for\n Two-pipe: 17\" Hg max. vacuum, to\n one pipe system. To be inserted in\n prevent air separation from oil\n return port with a 5/32\n\n Power consumption 100 W @100 psi\n Certified\n B6-B100: US only\n\n\n\n\n Solenoid valve characteristics\n\n Frenquency 50/60 Hz Solenoid coil number system\n N 6 2 1 L\n CORDSET TYPE R - R.H LEADS\n Consumption 9W N - NON DELAY L - L.H LEADS\n X - NO CORDSET (From shaft end)\n Maximum pressure 300 psi COIL VOLTAGE LEADS LENGHTS\n…

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Suntec Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

SUNTEC B-4000B model contains a high single pipe lift capacity and a unique hydraulic dual safety cut-on/off driven by : - A motor speed dependent device - A solenoid by-passing valve Cut-on is operated when both mechanisms are released. Cut-off occurs when the speed decrease or the solenoid valve is de-energized. The first stage gear set sucks the fuel from the line, and the second stage gear set pressurizes the fuel. This unit is supplied for 1-pipe operation, without by-pass plug installed. Please verify before installation.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Suntec 3G-OTH-02689 pump used for?

The Suntec 3G-OTH-02689 is a two-stage, one-step fuel oil pump designed for commercial and industrial burners. It provides high single-pipe lift capacity and dual safety cut-on/off, making it suitable for applications using #2 fuel oil or biodiesel blends up to B100.

What are the specifications of the Suntec 3G-OTH-02689 pump?

The Suntec B-4000B is a two-stage, one-step pump rated for 3450 rpm. It is compatible with #2 fuel oil and B6–B100 biodiesel blends per ASTM D396. The pump features a solenoid by-pass valve and motor-speed-dependent cut-off, supplied for 1-pipe operation without a by-pass plug.

Where to buy the Suntec 3G-OTH-02689 pump in Singapore?

3G Electric supplies the Suntec 3G-OTH-02689 pump to Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact our team for pricing and lead time on this two-stage fuel oil pump for industrial burner applications.

How to install the Suntec 3G-OTH-02689 pump?

For 1-pipe installation, ensure the by-pass plug is not installed; excess fuel returns to the inlet. For 2-pipe installation, remove the return-port steel plug and insert the by-pass plug. Always verify shaft rotation and nozzle location per the datasheet before mounting.

Used in

Common applications for Suntec
Oil-fired heating systems — Suntec AUV 47L and AUV 47R pumps supplying fuel to burner nozzles at controlled pressure
Industrial burner fuel delivery — Replacement AFG and AS47 fuel pumps for scheduled maintenance and emergency system restoration
Legacy burner commissioning — Suntec E6NA and compatible pump variants integrated into retrofit or existing heating installations
Heating plant maintenance — Suntec coupling assemblies and coil spares enabling field repair of motor-pump drive units without full unit replacement
Equipment retrofit and modernization — Suntec spare parts and pump variants supporting equipment upgrades while maintaining original burner compatibility

Suntec Products

3G Electric supplies Suntec fuel oil pump. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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