Gear Pumps

1Integral Relief Valve

Features:

1. Tamper resistant design
2. Relieves by cracking at nominal pressure relief setting
3. Contains only three components (valve cover, poppet and spring)

Benefits:

1. Protects pump against over pressure condition
2. Prevents unsafe misuse of the pressure relief valve
3. Minimizes the chance for unwanted flow rate leakage through PRV

2Jackscrew Disassembly Holes

Feature:

1. Jack screw holes in head

Benefit:

1. Simplifies disassembly and reduces downtime

3Heavy-Duty Casing Materials

Feature:

1. High strength ductile iron, grade WCB carbon steel or 316 Stainless Steel available

Benefits:

1. Three materials available to suit your application needs
2. Excellent corrosion resistance

4Static O-Ring Seals

Features:

1. Only 2 static O-rings seal the fluid chamber
2. Viton® is standard
3. FEP-encapsulated Viton, PFA-encapsulated Silicone, Kalrez (optional)

Benefits:

1. Improved leak protection over flat gaskets
2. Excellent protection against corrosive fluids

5High Quality Gear Materials

Features:

1. 1141 Steel (carbon steel and ductile iron models)
2. 17-4PH Stainless Steel (stainless steel models)

Benefits:

1. High tensile strength and long wear life
2. Excellent corrosion resistance

6Between-the-Bearings Support System

Features:

1. Eliminates traditional cantilever design
2. Eccentric spindle is stationary and fully supported in three locations (head, crescent, and canister)
3. Large bushings to optimally distribute loads

Benefits:

1. Improved radial support of idler gear and rotor
2. Longer mean time between repair
3. Suitable for all viscosities

7Robust Bushing Design

Features:

1. Premium grade carbon-graphite (standard)
2. Bronze, tungsten carbide and resin-impregnated carbon graphite (optional)
3. Lubricated and cooled by internal recirculation

Benefits:

1. Longer wear life
2. Suitable for a wide range of viscosities
3. Broad chemical compatibility
4. Run-dry capability
5. Reduced load and increased wear life

8Containment Canister

Features:

1. Single fluid chamber design
2. Patent-pending design is strong, yet minimizes heat generation
3. 316 Stainless Steel construction

Benefits:

1. Improved fluid circulation
2. Excellent corrosion resistance
3. More reliable pump operation
4. Higher viscosity capabilities

9Rare Earth Magnet System

Features:

1. Neodymium-iron-boron magnets standard
2. Samarium cobalt magnets optional
3. Optimized magnet size and spacing

Benefits:

1. Increased torque for high viscosity fluids
2. High temperature capabilities
3. Reduces chances of decoupling

10Canister Protection

Features:

1. Skid pads in magnet housing
2. Hub in support plate

Benefits:

1. Prevents canister damage if bearings or bushings fail

11Powder Coated External Surfaces

Features:

1. High-quality polyester powder coating of external surfaces (excluding Stainless Steel surfaces)
2. Superior adhesion and hardness

Benefits:

1. Chemically resistant
2. Resistance to chipping and peeling

12Integral Foot

Feature:

1. Integral with magnet housing

Benefits:

1. Optimal shaft alignment
2. Rigid mounting

13SKF® Explorer Deep Groove Ball Bearings

Features:

1. Very precise tolerances
2. Optimized internal surface finishes
3. Greased with lifetime seal

Benefits:

1. Longer bearing service life
2. Lower maintenance and operating costs
3. Maintenance-free

14No End Clearance Adjustment

Feature:

1. Rotor-to-head clearance predetermined by spindle design

Benefits:

1. No adjustments needed
2. Self-adjusts for temperature changes
3. Reduced assembly and maintenance time

1Pressure Relief Valve

Protects pump and seals in the event of excessive pressure.

1Jacketed Pressure Relief Valve Option

• Ensures that the valve is at appropriate operating temperature when it needs to open
• Jacketed valve recommended with jacketed head
• Available on G2-55, G2-69, G2-82, G2-133, and G2-222 cast iron models

2Head Screws

Securely fastens head to case.

3Head

Top end of pump that supports idler gear and one side of the rotor shaft assembly. Contains ports and mounting point for pressure relief valve. Heavy-duty construction for rugged use and long life.

3Jacketed Head Option

• Large, jacketed surface area
• Maintains product and process temperature
• Keeps liquid at appropriate viscosity to maintain proper lubrication of the bushings/pin
• Available on G2-55, G2-69, G2-82, G2-133, and G2-222 cast iron models

4Head Gasket

Seals surface between case and head.

5Case

Central body casing of pump with inlet and outlet ports. Case can be rotated for multiple inlet/outlet and flow orientation.

5Jacketed Case Option

• Adding jacketed case ensures the highest level of temperature and process control
• Available on the G2-55 and G2-133 case iron sizes only

6Idler Gear

Connected to and driven by the rotor/shaft assembly.

7Bracket Gasket

Seals surface between case and bracket.

8Rotor/Shaft Assembly

Consists of shaft and rotor gear, and drives idler gear. Can rotate in either direction to reverse pumping direction as required.

9Bracket

Pump frame with easy access mounting holes for bolting down pump at installation site. Durable construction for minimal vibration and long life.

9Jacketed Bracket Option

• Standard and required option when choosing a jacketed design
• Provides temperature control in the bushing area that radiates to the low velocity area behind the rotor, a typically cold spot in the pump
• Keeps material in the seal area warm, which prevents product from hardening and damaging the seal upon startup
• Available on G2-55, G2-69, G2-82, G2-133, and G2-222 cast iron models

10Bracket Screws

Securely attaches case to bracket.

11Packing

Low cost substitute for seals; minimizes/controls leakage of rotor/shaft assembly.

12Mechanical Seal

Provides secure sealing around rotor/shaft assembly.

13Seal/Packing Gland

Securely houses seal or packing around rotor shaft.

14Gland Screws

Firmly attaches seal gland to bracket.

15Bearing Housing Assembly

Allows smooth, accurate rotation of rotor shaft assembly. Enlarged bearing housing provides easy access to shaft seal and single-point end-clearance adjustment for ease of maintenance and adjustability.

1Rotor Bearing Sleeve (RBS)

The Rotor Bearing Sleeve (RBS) and seal chamber is designed to accept a wide range of bushing options as well as sealing technologies such as packing, cartridge triple-lip seal, and cartridge mechanical seal.

2Rear Plate with Jacketing

Provides jacketing behind the rotor to eliminate cold spots

3Heavy-Internal Clearance Options

A wide range of internal clearance options are available, which allows optimal performance in a wide range of applications

4Hardened Idler Pin

Standard on all pump sizes for maximized operational life

5High-Strength Rotor Standard

High-strength, ductile iron rotor comes standard on all sizes, eliminating the need for costly, long lead-time steel rotors

6Jacketed Head with PRV

Jacketed head designed to incorporate an optional pressure relieve valve (PRV), offering pressure protection with improved head heating

7Seal/Packing Gland

Securely houses seal or packing around rotor shaft.