Description
NOV Upper IBOP Complete Repair Kit – P/N 30177083-2
The NOV Upper IBOP Complete Repair Kit, part number 30177083-2, is identified as a complete maintenance kit for compatible external-stop Upper Internal Blowout Preventer valve assemblies used in NOV and Varco top drive systems.
The kit is intended for maintenance situations requiring a more comprehensive repair scope than the replacement of soft sealing elements alone. It should not be confused with part number 30177083-1, which is separately identified as the Upper IBOP soft-seal repair kit.
Because the complete bill of materials for P/N 30177083-2 is not publicly available, the individual components, quantities, materials and dimensions included in the supplied kit must be confirmed against the applicable NOV drawing, OEM packing list or supplier quotation before purchase.
Complete Repair Kit for External-Stop Upper IBOP Assemblies
The NOV Upper IBOP Complete Repair Kit is associated with an Upper IBOP assembly incorporating an external-stop configuration. The kit is intended to support scheduled maintenance, inspection and overhaul of the compatible valve assembly.
A complete repair kit may provide a broader service scope than a soft-seal-only kit. However, customers should not assume that every internal metallic component, ball, seat, stem, gland or operating component is included unless it is specifically listed in the official bill of materials supplied with the kit.
The maintenance scope should be determined after inspection of the installed Upper IBOP. Components showing excessive wear, corrosion, deformation, scoring or dimensional damage may require separate replacement even when a complete repair kit is being used.
Difference Between P/N 30177083-1 and 30177083-2
NOV uses separate part numbers for the soft-seal and complete repair-kit configurations associated with this Upper IBOP application:
- P/N 30177083-1: Upper IBOP soft-seal repair kit
- P/N 30177083-2: Upper IBOP external-stop complete repair kit
- P/N 30177083-DWG: Related repair-kit drawing reference
The NOV Upper IBOP Complete Repair Kit should therefore be selected when the required OEM reference is specifically 30177083-2. The two repair-kit numbers should not be substituted for one another without technical confirmation.
When the maintenance requirement is limited to routine seal replacement, the soft-seal kit may be the specified item. When the maintenance program requires the complete repair-kit configuration, P/N 30177083-2 should be requested.
Application in NOV and Varco Top Drive Systems
The Upper IBOP forms part of the internal drilling-fluid flow path in a top drive system. It is installed within the top drive drill-string arrangement and is used as part of the internal pressure-control system.
The valve assembly must operate and seal correctly under the conditions specified for the installed equipment. Periodic inspection and maintenance are therefore important, particularly after extended operation, repeated pressure cycles or exposure to demanding drilling conditions.
The NOV Upper IBOP Complete Repair Kit is associated with NOV and Varco top drive spare-part requirements. Final compatibility cannot be established from the repair-kit number alone when the configuration of the existing Upper IBOP is unknown.
The top drive model, equipment serial number, Upper IBOP assembly number, valve revision and service configuration should all be checked before ordering.
Upper IBOP Maintenance Considerations
Upper IBOP maintenance must be completed by qualified personnel using the relevant equipment manual, approved workshop procedures and site safety requirements. The assembly must be isolated, depressurized and secured before disassembly begins.
During overhaul, the valve body, sealing surfaces, grooves, moving components and related hardware should be cleaned and inspected. Components outside acceptable service limits should not be returned to operation solely because a new repair kit has been installed.
New seals and repair components must be fitted in their correct positions and orientation. Only compatible assembly lubricants and approved maintenance tools should be used where specified by the manufacturer.
After reassembly, the valve should be functionally inspected and pressure-tested according to the applicable NOV procedures and the operator’s maintenance program before being returned to service.
External-Stop Configuration
The description “EXT STOP” or “External Stop” forms part of the official product identification associated with P/N 30177083-2. This configuration detail is important when comparing the repair kit with the installed Upper IBOP assembly.
An external-stop repair kit should not automatically be considered compatible with a different IBOP design, internal configuration, size or revision. Visual similarity between valve assemblies is not sufficient for determining interchangeability.
Customers should provide clear photographs of the existing valve markings, original packaging and top drive identification plate when requesting technical verification.
Compatibility Checks Before Ordering
Before purchasing the NOV Upper IBOP Complete Repair Kit, verify the following information:
- Required NOV part number: 30177083-2
- Product description: Upper IBOP, external stop, complete repair kit
- Upper IBOP assembly part number
- Top drive manufacturer and model
- Top drive serial number
- Valve size and connection information
- Service and operating configuration
- Applicable equipment revision
- Required repair-kit drawing or bill of materials
- Required quantity
Providing this information helps distinguish the complete repair kit from similarly named Upper IBOP seal kits, PH-series repair kits and repair kits intended for other valve configurations.
Key Product Information
- Brand reference: NOV / Varco
- Product type: Upper IBOP complete repair kit
- Part number: 30177083-2
- Configuration: External stop
- Kit scope: Complete repair kit
- Application: Upper IBOP maintenance
- Equipment category: Top drive system
- Related soft-seal kit: 30177083-1
- Related drawing reference: 30177083-DWG
- Industry: Oil and gas drilling
Ordering Information
When requesting a quotation for the NOV Upper IBOP Complete Repair Kit, state part number 30177083-2 and the required quantity. Include the top drive model, serial number and installed Upper IBOP assembly number whenever available.
The requested documentation should also be stated clearly, including the manufacturer’s Certificate of Conformity, Certificate of Origin, packing list or traceability documents when required.
Final compatibility, kit contents, product condition and documentation scope must be confirmed in the supplier’s quotation and against the applicable OEM technical information before order placement.
Oil Well Direct supplies top drive spare parts, Upper and Lower IBOP components, drilling equipment repair kits and other maintenance items for offshore and land drilling operations.
Official NOV page covering genuine spare-parts supply and support services for marine and drilling equipment, including drilling rig and top drive replacement parts.
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