NOV Shaffer 10719349-001 Repair Kit 1″ SPM 5K Pilot EH Type HA

NOV Shaffer Repair Kit 1 In SPM 5K Pilot EH Type HA (P/N: 10719349-001)

The NOV Shaffer P/N: 10719349-001 is an OEM major overhaul and elastomer replacement kit engineered specifically for NOV Shaffer 1-inch, 5,000 PSI Electro-Hydraulic (EH) Type HA Pilot-Operated Subplate Mounted (SPM) valves. Designed for high-integrity subsea multiplex (MUX) control pods and surface blowout preventer (BOP) hydraulic control systems, this kit restores positive directional sealing, pilot-stage response timing, and full working pressure integrity under API Spec 16D operational demands.

Technical Specifications

Key Features

1. Full Pressure Rating Compliance: Restores OEM sealing containment up to 5,000 PSI (345 bar) working pressure in critical pilot/main-stage circuits.
2. Fluid-Resistant Elastomer Formulations: Resistant to degradation, swelling, and explosive decompression in standard subsea water-glycol control fluids.
3. Precision Pilot-Stage Soft Goods: Includes dynamic and static sealing rings engineered to minimize pilot actuation hysteresis and ensure crisp spool shifting.
4. Zero-Leakage Internal Check & Shuttle Seals: High-durometer o-rings and profiled backup elements eliminate fluid bypass across high-pressure differential ports.
5. Extended Service Life: Formulated for multi-year subsea deployment intervals in compliance with periodic BOP control pod overhaul routines.

Applications

• Subsea MUX BOP Control Pods: Primary and secondary pilot-operated directional control loops in 4th/5th generation offshore drilling stacks.
• Surface BOP Accumulator Systems (Koomey / Shaffer Units): High-pressure hydraulic switching and pilot lines controlling annular and ram preventers.
• Electro-Hydraulic Backup Systems (EHBS): Biennial maintenance and overhaul of emergency pod SPM valve banks.
• Subsea Production Manifolds & Workover Pods: Subplate-mounted hydraulic actuator piloting.

Equipment Compatibility

• Valve Bodies: Shaffer 1″ 5K SPM Pilot EH Type HA Directional Valves.
• Control Pods: NOV 4th & 5th Generation MUX Subsea BOP Control Pods.
• Hydraulic Control Units: Shaffer / Koomey Electro-Hydraulic Subsea Stack Panels and Diverter Control Modules.

Part Number Cross-References

• Primary MPN: 10719349-001
• Associated Pod SPM Spares: 10851391-001, 7401936, 10960217-001

Marine & Subsea Drilling Engineer’s Guide

1) Pre-Assembly Hygiene & Cleaning

Subsea pilot stages operate on tight hydraulic clearances. Ensure the valve cavity and spool lands are ultrasonically cleaned and degreased before rebuilding. Any solid particle contamination can bridge the pilot seat and cause continuous pilot bleed or delayed valve shift times.

2) Lubrication Best Practice

Always lubricate dynamic seals and subplate interfaces using a manufacturer-approved, fluid-compatible lubricant (e.g., Castrol Braycote or system-compatible glycol gel). Never use petroleum-based grease on systems configured strictly with water-glycol fluids unless explicitly cross-rated.

3) Backup Ring Orientation

When installing the split or contoured backup rings on the 1″ spool glands, verify the concave or scarf-cut orientation faces directly opposite the high-pressure side of the primary elastomer ring. Incorrect orientation will cause seal extrusion and premature blow-by under 5,000 PSI differential pressure.

4) Torque and Hydro-Testing

After rebuilding with kit 10719349-001, torque the subplate tie bolts in an alternating cross pattern to NOV factory torque limits. Perform a static pressure test at 1.5x working pressure and conduct low-pressure/high-pressure functional cycling before landing the pod subsea.

Frequently Asked Questions

What components are included in the NOV Shaffer 10719349-001 repair kit?

The 10719349-001 kit contains all elastomeric and soft sealing elements needed to complete a major overhaul on the 1-inch 5K Pilot EH Type HA SPM valve. This includes dynamic spool seals, anti-extrusion backup rings, static body seals, pilot seat elastomers, and subplate interface o-rings.

How often should the SPM valve repair kit be replaced on subsea BOP pods?

Per API 16D guidelines and standard rig maintenance routines, SPM pilot and main valve soft goods in subsea MUX pods are typically overhauled every 3 to 5 years during major stack surveys, or during biennial pod maintenance cycles if duty cycle metrics indicate seal degradation.

Is this repair kit compatible with water-glycol subsea hydraulic control fluids?

Yes. The seals in this kit are rated for standard subsea hydraulic fluids, including water-based glycols (HWBF) and offshore control fluids without swelling, hardening, or losing tensile properties.

How do I verify the shelf life and cure date of the elastomers?

Every OEM kit is marked with manufacturing batch numbers and elastomer cure dates. Kits should be stored in cool, dry, dark environments inside original UV-shielded packaging to maintain the full 5- to 10-year shelf life prior to installation.

Can this kit be used for both pilot and main stage sealing?

This kit is engineered specifically for the 1″ SPM 5K Pilot EH Type HA valve assembly. Ensure your valve body tag matches the 1″ 5K EH Type HA configuration prior to installation.