AP-S pumps are a horizontal, end-suction, mechanically sealed, fluoropolymer-lined, ANSI centrifugal pump. The standard pump is frame-mounted with an integrally molded ETFE sleeve and big-bore tapered seal chamber.
With its durable construction and precision manufacturing, AP-S pumps are perfect for demanding applications.
Operating Parameters
- Flows to 525 gpm (119 m³/h) (Group 1. Group 2 coming soon)
- Heads to 320 ft (98 m) (Group 1. Group 2 coming soon)
- Pressures to 300 psi (20.7 bar)
- Temperatures from −20 to 250°F (−29 to 121°C)
- Power rated to 30 hp (22 kW) (Group 1. Group 2 coming soon)
- Maximum Viscosity: Typical applications up to 125 cP, contact ABM for higher viscosity
- Maximum Solids: size depends on the pump size, 30% by volume
Typical Applications
ABM ETFE-lined sealed and sealless pump products are ideal for any application within their operating envelope.
- Chemical processing
- Acid transfer
- Water/waste chemical treatment
- Pharmaceutical manufacturing
- Electronics manufacturing
- Hydrocarbon processing
- Reactor feed
- Chlor-alkali
- Scrubber systems
- Food and beverage
- Tank car loading/unloading
- Metal finishing: pickling, etching, and plating
Features and Benefits
Superior Chemical Resistance:
The wetted materials inside the pump are made from ETFE plastic, which is highly inert to most chemicals, protecting the ductile iron exterior components that give AP-S pumps the strength and rigidity of traditional alloy pumps.
All external metal surfaces are painted with a two-part epoxy primer and urethane topcoat for the ultimate resistance to corrosion and UV resistance. This paint system’s quality far exceeds that found on comparable pumps.
Low Lifecycle Costs:
ETFE-lined pumps offer chemical compatibility superior to many high-alloy pumps, providing a highly cost-effective alternative to competitors’ alloy pumps. Although the initial investment may be similar to a simple 316ss alloy pump, the cost compared to higher alloys is multiples less. The extended service life, low initial cost, reduced maintenance costs, and minimized downtime contribute to significant long-term savings.
Reduced maintenance, improved reliability, and significant part interchangeability together reduce the AP-S pump’s total cost of ownership.
Enhanced Solids Handling:
Ductile iron pressure-retaining components provide strength and durability and have a fully bonded ETFE lining minimum 1/8 in thick for unrivaled corrosion protection and chemical compatibility. The pure virgin ETFE casing and cover lining offers excellent resistance to abrasion, erosion, and minimizes surface buildup. This makes the pump easier to clean, less prone to fouling, and perfect for abrasive slurries or particulates.
AP-S pumps can handle significantly greater solids by volume than mag-drive pumps. Standard pumps have a large tapered seal chamber to aid in air removal in the seal chamber. In addition, flow modifier vanes aid in keeping solids away from seal faces. Impellers have back pump-out vanes to reduce seal chamber pressure and thrust loads.
American Quality
Manufactured and Assembled in the USA
Parts and raw materials in the pump are locally sourced from US suppliers for reduced lead times and reliable quality. Raw materials are processed by ABM and manufactured into high-quality finished goods internally in our vertically integrated manufacturing facilities. Spare parts are readily available without long lead times.
Interchangeability
- AP-S pump dimensions conform to ASME B73.1 for sealed pumps. AP-S pumps back-pull-out assemblies are interchangeable with AP-M sealless mag-drive pumps for simple swap-out of drive ends with this patent-pending design.
Proven, Robust Design
The traditional mechanically sealed pump design is well established in most pumping industries. The AP-S pumps build on legacy designs and improve upon them to provide a more reliable, economical, and available high-performance pump.
Heavy-Duty Bearing Frame
- The power end was designed from the ground up with durability and reliability foremost. The ductile iron bearing frame has a large oil volume, Inpro® bearing isolators, and oversized angular contact thrust bearings, which ensure smooth operation and extended lifespan.
- The large oil capacity transfers heat from the bearings better than competitor bearing housings, enabling the bearings to run cooler. Contaminants fall away from the bearings and toward the magnetic drain plug.
- The one-inch sight glass may be installed on either side of the pump and enables at-a-glance oil condition and level monitoring.
- Wide open sides of the frame adapter allow easy access to the seal for hands and tools.
- Metal-to-metal fits ensure optimal concentricity between frame adapter and seal chamber.
Extended Bearing Life
The closed impeller with balance holes and pump-out vanes minimizes axial thrust and seal chamber pressure without requiring axial impeller adjustment, increasing reliability and simplifying maintenance.
The modified-concentric volute design minimizes radial loading and shaft deflection while maintaining high efficiency and leads to longer shaft and bearing life.
This innovative design allows for optimum efficiency, reduced maintenance, and a longer lifespan compared to traditional sealed pumps.
No Impeller Axial Adjustment Needed:
- Open impeller designs require a tight clearance to the casing wall to provide peak performance. This clearance requires frequent adjustment as the impeller wears or process temperatures vary to maintain that performance over time.
- AP-S pumps offer the fastest, simplest bearing frame assembly on the market. With a closed impeller, there is no impeller-to-casing or rear-cover clearance setting necessary — the impeller consistently delivers flow and head for its lifetime.
- Slightly larger diameter thrust bearings allow the shaft and bearing assembly to be inserted into the frame to a fixed position and the rear keeper holds it rigidly in place. Fewer parts simplify maintenance and improve reliability.
- High quality, low friction labyrinth oil seals maintain a contamination-free environment to extend bearing life.
Integrally Molded Shaft and Sleeve
The 316 SS shaft is over-molded with virgin ETFE for the same chemical compatibility as the casing and rear cover. The integral sleeve allows the shaft diameter under the seal to be larger than competitors’, for the lowest deflection index (L3/D4) of any sleeved pump on the market — the lower the number, the better the shaft resists deflection under operating loads. This results in less shaft deflection in the seal area and longer seal life.
The shaft adapts to the impeller with a polygon for maximum torque transmission and prevents damage from accidental reverse rotation. There is no need to un-couple the pump for rotation direction checking for new installs or motor replacements — the impeller will not unthread when spinning backwards!
The impeller interface is sealed from the process fluid by FEP-encapsulated o-rings.
Sealing Options
Tapered big-bore seal chamber that can accommodate a wide range of single, double, component, and cartridge seals. Flow modifiers in the seal chamber direct solids and entrained gas away from the seal faces and reduce liquid rotation. Optionally, install the Select-A-Bore adapter into the taper bore to convert to a big-bore with or without a restrictor bushing for external clean seal flushing through the seal.
Casing with Bonded ETFE Lining
- Ductile iron is known for its toughness and ability to withstand impact and high-pressure conditions. With the fully bonded ETFE lining providing a chemical and abrasion-resistant barrier, the overall structure is better protected from both mechanical and chemical stresses. The thick ETFE lining is almost universally chemically inert. Users no longer need to pay for expensive high alloys that take months to deliver.
- The ETFE lining offers excellent resistance to abrasion and erosion, which is particularly beneficial in applications where the pump handles abrasive slurries or particulates. Wear on the casing and rear cover is minimized, maintaining high performance over time.
- ETFE has a low friction coefficient which, when processed into AP-S casings, results in a smoother internal surface for fluid flow. This helps maintain the pump’s hydraulic efficiency by reducing turbulence and minimizing energy losses during operation.
Back pull-out design for simplified maintenance. Top centerline discharge is self-venting.
Casings have a standard drain to enable proper draining and flushing before maintenance, improving maintenance personnel safety.
FEP-encapsulated FKM o-rings are the standard for sealing the casing to containment shell, providing reliable zero-leak sealing. Other materials are available upon request.
Designed to withstand ANSI/HI 9.6.2 flange loads.
Flanges match ANSI Class 300 overall diameter and thickness and may be drilled with ANSI Class 150 or 300, ISO PN 16 or 25, or JIS 10K bolt patterns. Flanges have ETFE raised face.
Impeller
Carbon-fiber reinforced ETFE provides the ultimate in strength and chemical compatibility. It is injection molded as a single piece over the reinforcing disc and shaft coupling. The polygon shaft coupling and reinforcing disc transmit maximum torque into the impeller and increase stiffness. The impeller is securely attached to the shaft with a 316ss lock nut which is covered by a threaded cap made from the same ETFE material as the impeller. The impeller nut also uses an FEP-encapsulated FKM o-ring to isolate the shaft nut from the process.
- Replaceable silicon carbide wear ring set maintains optimal performance by reducing leakage back to the suction.
- The suction is unobstructed, resulting in high efficiency and low NPSHR.
- Closed impeller reduces thrust loads. Patent-pending balance holes and back pump-out vanes further reduce thrust loads. Impellers do not wear against the casing requiring frequent adjustment to maintain performance.
- Capable of passing high solids by volume if the particle size fits through the impeller passages.
- Wear rings simply snap into place without requiring any special tools or locking pins.
- Flanges match ANSI Class 300 overall diameter and thickness and may be drilled with ANSI Class 150 or 300, ISO PN 16 or 25, or JIS 10K bolt patterns. Flanges have ETFE raised face.
- Casings have a standard drain to enable proper draining and flushing before maintenance, improving maintenance personnel safety.
- Impeller balancing not required for the entire range of trim sizes due to the low mass of ETFE.
Simple Wear Ring Installation
ABM sealed and sealless pumps eliminate complicated wear ring installation and retention common among competitor products. The patent-pending wear rings are integrally molded with locking plastic tabs which hold and align the silicon carbide rings and lock them into place. This mechanism provides a means for holding the wear ring in place but also enables the stationary wear to be self-aligning, allowing for tighter clearances. If a wear ring breaks, simply remove any remaining pieces and press a new ring into the pocket. There are no retaining rings, locking pins, or other steps required.
Construction Details
Dimensions
Parts List
