Product Introduction
This curated assortment covers all mission-critical wear components, sealing assemblies and instrumentation parts for WKM crown valves, including precision bearings, stem packing sets, seat springs/seals, bonnet seals, shear pins, valve stems, thrust rings, pressure/temperature gauges, ring gaskets, Elgiloy seal rings, choke trim components, lubrication fittings and grease accessories. All parts comply with API 6A/6D wellhead equipment standards, ISO 9001 quality benchmarks and WKM OEM performance requirements, with full material traceability and factory hydrostatic testing up to 15,000 PSI. The lineup features corrosion-resistant alloy steel structural components, fire-safe elastomer seals, Elgiloy metal gaskets, precision-machined choke trim and high-accuracy instrumentation, fully mapped to WKM crown valve models for simplified inventory management and emergency field repairs.
Functional Performance Specifications
These WKM crown valve spare parts deliver industry-leading reliability and sealing performance: stem packing sets maintain zero external leakage at 5000 PSI operating pressure with a maximum leak rate of ≤0.005 SCFM; VG200 seat seals and Elgiloy ring seals provide bi-directional shutoff for 3M-15M pressure ratings, meeting API 6A fire-safe requirements; precision T110/T88 bearings support smooth stem operation with an L10 service life of 25,000+ operating hours; color-coded shear pins activate at calibrated torque loads to protect valve internals from overpressure damage; pressure gauges offer ±0.5% accuracy for real-time pressure monitoring; and choke trim components deliver precise flow control with minimal erosion under high-flow conditions.
Structural & Material Features
- OEM Precision Machining: All metal components are machined to tight tolerances (±0.0003 inch), ensuring perfect fitment with WKM crown valve internals and eliminating premature wear from misalignment
- High-Grade Material Selection: Inconel 718/410SS for stems and choke trim, Elgiloy for metal seal rings, FKM/nitrile for elastomer seals, heat-treated alloy steel for bearings, and 316SS for hardware to resist H2S, CO2 and corrosive well fluids
- Fire-Safe Sealing Design: Multi-layer stem packing and metal-to-metal seat seals comply with API 6A fire-safe standards, preventing leakage in high-temperature emergency scenarios
- Modular Repair Design: Pre-assembled seal kits, bearing sets and choke trim reduce field overhaul time by 65%, minimizing non-productive well shutdown time
- Corrosion & Erosion Resistance: Boronized and coated stem/trim components withstand abrasive well fluids and extend service life in harsh production environments
Applicable Operating Conditions
These spare parts are built for harsh oil and gas production environments, optimized for WKM VG200/MPX40I/CVC2.5 crown valves used in wellhead control, production flow control and high-pressure shutoff operations. They perform reliably in ambient temperatures ranging from -75°F to 350°F, resist exposure to H2S, CO2, brine and abrasive drilling/production fluids, and endure continuous high-pressure cycling. Components are suitable for onshore wells, offshore platforms, subsea wellheads and hazardous area production sites, complying with API 6A/6D and PSL-3 safety standards.
Maintenance & Service Recommendations
- Inspect stem packing, seat seals and O-rings every 3 months for signs of wear, extrusion or hardening; replace full seal kits during scheduled overhauls (every 12 months or 8,000 operating hours)
- Lubricate stem bearings and valve internals with WKM-approved slide valve lubricant every 6 months, using OEM grease sticks and grease guns to prevent friction wear
- Check shear pins for fatigue or corrosion quarterly; replace with OEM color-coded shear pins to maintain calibrated overpressure protection
- Calibrate pressure and temperature gauges annually to ensure accurate monitoring and compliance with industry standards
- Inspect choke trim and stem guides for erosion every 6 months; replace worn components to maintain precise flow control and sealing performance
- Stock critical high-wear parts (seal kits, shear pins, bearings, gauges, lubricants) at recommended minimum levels to avoid unplanned well shutdowns during emergency repairs
- We supply the following spare parts:
| 29 | Bearing T110 for Crown Valve | Each | |
| 30 | Stem Packing WKM for Crown Valve | Set | |
| 31 | Seat Spring, VG 200, 3 1/8”, 3-5M | Set | |
| 32 | Seat Seals, VG200, 3 1/8”, 3-5M | Set | |
| 33 | Seat VG 200, 3 1’8”, 5M | Set | |
| 34 | Bonnet Seal VG 200, 3 1/8”, 5M | Set | |
| 35 | Body Lube Fitting, VG 200 | Each | |
| 36 | Bearing Race | Each | |
| 37 | Thrust Ring | Each | |
| 38 | Bearing T88 | Each | |
| 39 | Stem WKM 3 1/8” 3-5M | Each | |
| 40 | Shear pin Gray VG200 for 2 1/16” Valve | Each | |
| 41 | Shear pin Gray VG 300 for 3 1/8” Valve | Each | |
| 42 | Shear pin for 4 1/16” Valve | Each | |
| 43 | Stem Packing Grease Stick | Stick | |
| 44 | 600 Psi Gauge (4″ OD) | Each | |
| 45 | 1000 Psi Gauge (4″ OD) | Each | |
| 46 | 3000 Psi Gauge (4″OD) | Each | |
| 47 | 5000 Psi Gauge (4″OD) | Each | |
| 48 | 3″ Temperature gauge 250F | Each | |
| 49 | 1/2″ Tee bloc, 5000psi WP | Each | |
| 50 | 1/2″Niple, 5000psi WP | Each | |
| 51 | DANIEL MODEL 500 UNIVERSAL – ORIFICE PLATE, 3″ | Each | |
| 52 | SLIDE VALVE LUBRICANT-24″ 600# SOF (BOX) | Each | |
| 53 | Plate carier14.3 P-C SR 3 150-1500 316SS (INV CAST) CUST ASSY | Each | |
| 54 | DANIEL MODEL 8TSC 14.3 TEFLON SEAL RING FOR 3″, 1/8 THICK UNIVERSAL PLATE | Each | |
| 55 | GREASE GUN COMPLETE | Each | |
| 56 | RING SEAL – RG SEAL 4.5″ODX4″IDX.55″THK ELGILOY SPG | EA | |
| 57 | RING SEAL – RG SEAL 3.594″ODX3.094″IDX1.22″THK ELGILOY SPG | EA | |
| 58 | JUNK RING – RG JUNK 3.59″OD X 3.097″ID X .40″ THK | EA | |
| 59 | RING GASKET – GSKT RG SS 6.828″OD X 6.240″ID X .383″ THK | EA | |
| 60 | RING SEAL – RG SEAL 1.75″ODX1.0″IDX1.225″THK | EA | |
| 61 | JUNK RING – RG JUNK 1.74″ODX1.00″IDX.44THK | EA | |
| 62 | O-RING,2-358,90,DURO,NITRILE | EA | |
| 63 | CAGE MPX40I 2.5″ LINEAR TC PSL-3 | EA | |
| 64 | WAVE SPRING – SPG WAVE, 4″ODX3-1/2″ID, X750 | EA | |
| 65 | STEM MPX40I 410SS 15M MNL OPER PSL-3 | EA | |
| 66 | PLUG ASSEMBLY – PLUG ASSY MPX40I SSTC 15M PSL-3 | EA | |
| 67 | LOCKNUT – NUT HX HVY .625-18UNF-2B A194 Gr2HM CAD PLTD | EA | |
| 68 | IND MPX40I 2.5″ SS NROT STEM | EA | |
| 69 | SCREW , SKT , SET , .31-18X.25LG 18-8 SS | EA | |
| 70 | FTG Grease SS 1/4″ | EA | |
| 71 | Stem Guide, CVC2.5MPB;2.500″;Equal Percent Trim;718 | EA | |
| 72 | Trim;Cage;CVC2.5MPB;6% CO.8 GRAIN;2.500″;Equal | EA | |
| 73 | Choke;PIN,CAGE,WITH HEAD, .250 DIA X .330 LONG, | EA | |
| 74 | Choke;PLUG ASSEMBLY CVC2.5MP, INCONEL 718/6%CO TUNGSTEN CARBIDE, SHRINK-FIT , ROD SEAL, | EA | |
| 75 | Choke;STEM, CVC2MPB, INCONEL 718, 3/5/10K,BORONIZED, MANUAL AND ELECTRIC ACTUATOR, PSL-3 | EA | |
| 76 | Choke;KEY .25″ SQUARE, FULL RADIUS 1.000 LONG, UNS-S30400 COLD FINISHED PER ASTM-A276 | EA | |
| 77 | Choke;BACKUP RING, PARBAK, SIZE 8-237, 3.381″ ID X .118″ HT X .040″ THK, ED RESISTANT FKM 95 DURO | EA | |
| 78 | Choke; O-RING, SIZE 2-237, 3.359″ ID X . 139″ WIDTH, ED RESISTANT FKM 95 DURO | EA | |
| 79 | Choke; O-RING, SIZE 2-233, 2.859″ ID X . 139″ WIDTH, ED RESISTANT FKM 95 DUROMETER | EA | |
| 80 | Choke;BACKUP RING, PARBAK, SIZE 8-233, 2.881″ ID X .118″ HT X .040″ THK, ED RESISTANT FKM 95 DURO | EA | |
| 81 | Choke;BACKUP RING, PARBAK, SIZE 8-238, 3.506″ ID X .118″ HT X .040″ THK, ED RESISTANT FKM 95 DURO | EA | |
| 82 | Choke;O-RING, SIZE 2-238 3.484 ID X . 139 WIDTH, FKM 95 DURO ED RESISTANT | EA | |
| 83 | Choke;O-RING, SIZE 2-334 2.600″ ID X . 210 WIDTH, ED RESISTANT FKM, 95 DURO | EA | |
| 84 | Choke;T-SEAL, PISTON, 2.250″ ID X 2.625″ OD X .280″ WIDTH ED RESISTANT FKM 95 DURO WITH 2 PEEK BACK UP RINGS (FITS AS568-331 NO BACKUP ORING GROOVE) | EA | |
| 85 | Choke;RING, RETAINER, EXTERNAL SPIRAL, LIGHT DUTY, 4.00 SHAFT DIA X .039 THK X .188 RADIAL WALL, 302 SS | EA | |
| 86 | Choke;SEAL,BONNET CVC2.5ME 825 INCOLOY SILVER PLATED, 0.0008 – 0.0013 IN THICK, METAL COMPRESSION | EA | |
| 87 | Choke;PACKING-SET-SET-1.125 STEM DIA, .313 C/S, 1.75 ID HOUSING, PTFE/ELGILOY/GRAPHITE, FIRE SAFE, -75K TO 350 | EA | |
| 88 | Choke;RING-WIPER-ROD 2.000 ID X 2.500 OD PARKER SHU-2000 MOLYTHANE-NEW | EA | |
| 89 | Choke;ORING–SIZE 2-118 .862 ID X .103 C/S NITRILE 70 DURO-NEW | EA | |
| 90 | Choke;GREASE FITTING 1/8 NPT STRAIGHT , 316SS | EA |
Field Failure Repair Case Studies
Case 1: WKM VG200 3 1/8” Crown Valve Stem Leakage
A production well experienced severe external stem leakage from a WKM VG200 crown valve, caused by degraded OEM stem packing that lost elasticity under 5000 PSI pressure. Installing a new WKM stem packing set eliminated leakage, restored zero-seal performance and resumed normal well production.
Case 2: Shear Pin Breakage & Valve Lockup
A WKM 3 1/8” crown valve seized during operation due to a broken gray VG200 shear pin, triggered by an overpressure event. Replacing the OEM shear pin and inspecting internal bearings resolved the lockup, restoring proper valve actuation and overpressure protection.
Case 3: Choke Trim Erosion & Flow Control Loss
A CVC2.5MPB choke crown valve lost precise flow control due to eroded cage and plug trim components, caused by abrasive well fluids. Swapping in OEM Inconel 718 choke trim restored accurate flow regulation and extended the valve’s service life.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible with all WKM VG200 crown valve sizes? | Yes, this parts list covers 2 1/16”, 3 1/8” and 4 1/16” WKM VG200 crown valves, matching OEM pressure ratings (3M-5M) and API 6A specifications for full fitment. |
| Do these spare parts meet API 6A fire-safe standards? | Absolutely, all sealing components, stems and trim parts comply with API 6A fire-safe requirements, matching WKM OEM quality and safety benchmarks. |
| Can these parts be used for routine maintenance and emergency wellhead repairs? | Yes, these OEM-grade spares work for scheduled preventive maintenance, full valve overhauls and emergency wellhead repairs to minimize costly production downtime. |
Procurement Guidance & Closing Value Statement
This WKM crown valve spare parts catalog serves as both a formal procurement benchmark and a technical troubleshooting reference, designed to eliminate the risks of substandard aftermarket parts, reduce long-term maintenance expenses and uphold the highest safety and sealing standards for wellhead operations. Every part is a verified OEM-certified component that guarantees perfect fitment, consistent high-pressure performance and compliance with API industry standards, making it the definitive resource for maintaining WKM VG200, MPX40I and CVC2.5 crown valves.
Whether you need to replace worn sealing kits, faulty bearings, damaged shear pins, eroded choke trim or instrumentation to restore your valve functionality, or stock critical OEM spares for routine maintenance and unforeseen wellhead breakdowns, this catalog provides the exact part numbers, quantities and specifications your operation demands. Secure your supply of authentic WKM crown valve spare parts today to protect your wellhead equipment investment, maintain uninterrupted production flow and keep your well control operations safe, compliant and efficient in the field.
