Introduction
The Ingersoll Rand 47553881001 / 23531627 Intake Valve Service Kit listing combines an 8K intake-valve maintenance reference with a dedicated blowdown-block service reference.
47553881001 is cataloged as an Intake Valve Service Kit 8K (with modification) for R90–160, IR90–160, and IE R90–160 compressors. It appears in the same service-parts family as related intake-valve, gearbox, hose, temperature-control, and preventive-maintenance kits.
The second reference, 23531627, has a different but complementary function. The R132N/R160N/R132I/R160I parts book identifies it as “KIT, SERVICE BLOWDOWN BLOCK VVF18ENO” and lists the application as HAKG/HPKG 110, 120 & 140.
The intake valve is one of the main components governing airflow into a rotary screw compressor. Its position changes according to the compressor's operating condition and capacity-control requirements. Maintaining correct valve movement and sealing is therefore important for stable compressor performance.
The blowdown block operates within the pressure-control system. During unloading or shutdown-related sequences, the blowdown circuit helps manage pressure so the compressor can transition to the required operating state.
A fault in either system can produce similar symptoms. For example, a compressor that unloads slowly may have an intake-valve problem, a pneumatic-control problem, or a blowdown-block problem. Correct diagnosis therefore requires checking the complete control path rather than replacing components based only on the symptom.
The 23531627 kit is specifically associated with the VVF18ENO blowdown arrangement. A current supplier listing describes it as a service blowdown-block kit and gives the HAKG/HPKG 110, 120, and 140 application.
The R-series parts documentation also lists 23531635 separately as a service component for the PVVF18ENO modulation block. This distinction is important because the blowdown block and modulation block perform different functions even though they belong to the same broader control system.
For intake-valve service, 47553881001 should also be distinguished from 47553880001, which is separately cataloged as another 8K intake-valve service kit. The “with modification” designation of 47553881001 indicates that the exact configuration should be checked before selecting between the two references.
During maintenance, technicians should inspect the intake valve, actuator, blowdown block, modulation components, solenoids, control tubing, fittings, and sealing interfaces as an interconnected pneumatic system.
The 23531627 service kit is intended for the specified blowdown-block configuration rather than as a universal substitute for every Ingersoll Rand blowdown assembly. Likewise, 47553881001 should be matched to the compressor's exact model and serial-number range.
A supplier listing reports a weight of 5.05 lb for 23531627. This is a commercial listing value and should not be interpreted as a certified engineering weight for the combined 47553881001 / 23531627 listing.
The exact dimensions of the complete service kits were not reliably verified from technical documentation. Accordingly, no unsupported dimensional values are presented.
The supplied pair is treated as one product listing as requested. Public records independently establish 47553881001 as the modified 8K intake-valve service kit and 23531627 as the VVF18ENO blowdown-block service kit.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Ingersoll Rand |
| Primary Part Number | 47553881001 |
| Associated Part Number | 23531627 |
| Product Type | Intake Valve Service Kit / Blowdown Block Service Kit |
| Primary Service Reference | Intake Valve Service Kit 8K, with modification |
| Secondary Service Reference | Service Blowdown Block Kit |
| Documented Application for 47553881001 | R90–160, IR90–160, IE R90–160 |
| Documented Application for 23531627 | HAKG/HPKG 110, 120 & 140 |
| Blowdown Configuration | VVF18ENO |
| Primary Function | Intake-Air and Blowdown Control Service |
| Service Classification | 8K for 47553881001 |
| Operating Pressure | Not reliably verified |
| Control Pressure | Not reliably verified |
| Port Size | Not reliably verified |
| Valve/Block Material | Not reliably verified |
| Seal Material | Not reliably verified |
| Complete Kit Dimensions | Not reliably verified; configuration-specific |
| Complete Kit Weight | Not reliably verified |
| Listed Weight for 23531627 | Approx. 5.05 lb / 2.29 kg |
| Compatibility | Model-, configuration-, and serial-number dependent |
The application data for both references is supported by the available Ingersoll Rand parts documentation. The 5.05 lb value is a supplier-listed weight for 23531627 rather than a verified engineering specification for the complete paired listing.
Recommended Companion Models
| Model | Product Name |
|---|---|
| 47553880001 | Ingersoll Rand Intake Valve Service Kit 8K, R90–160 |
| 47552954001 | Ingersoll Rand Temperature Control Valve Maintenance Kit, R90–160 |
| 47553882001 | Ingersoll Rand Gearbox Maintenance Kit, R90–160I |
| 47553886001 | Ingersoll Rand Air-Cooled Hose Maintenance Kit, R90–160I |
These references belong to the broader R90–160 maintenance-parts family and cover intake-valve, temperature-control, gearbox, and hose service. They are companion maintenance items rather than automatic replacements for 47553881001.
Frequently Selected Alternatives
| Model | Product Name |
|---|---|
| 23531635 | Ingersoll Rand Service Modulation Block Kit, PVVF18ENO |
| 23467244 | Ingersoll Rand Service Solenoid Kit, VVF18ENO/PVVF18ENO |
| 23467251 | Ingersoll Rand Service Cylinder Kit, HPKG 110/120/140 |
| 23531585 | Ingersoll Rand HPKG 120 Valve Service Kit, Fixed Speed |
