Valves, Seats, Springs & Inserts for NOV 14-P-220 Triplex Mud Pumps

1

DHNO 9700369

Valve for NOV 14-P-220 Triplex Mud Pump

Abrasion-resistant alloy steel (AISI 4140) with hardened sealing surfaces (HRC 60-65), compatible with all standard pump valve configurations

1. Abrasive mud particle scuffing on sealing surfaces; 2. Cyclic pressure fatigue (up to 7500 Psi); 3. Sticking from debris buildup.

1. Use API-compliant mud with controlled solids content; 2. Clean valves thoroughly during routine maintenance; 3. Inspect sealing surfaces for scoring monthly per NOV specs (Document 14P220-MAINT-001).

2

DHNO 9700382

Valve for NOV 14-P-220 Triplex Mud Pump

Abrasion-resistant alloy steel (AISI 4140) with hardened sealing surfaces (HRC 60-65), compatible with all standard pump valve configurations

1. Abrasive mud particle scuffing; 2. Thermal stress from extreme fluid temperature swings; 3. Corrosion from aggressive drilling fluid additives.

1. Monitor fluid temperature to avoid thermal shock; 2. Apply anti-corrosion coating to exposed surfaces; 3. Replace if valves show pitting or rust.

3

DHNO 060135555

Valve for NOV 14-P-220 Triplex Mud Pump

Stainless steel (316L) with precision-machined sealing faces, ideal for corrosion-prone offshore or saltwater drilling environments

1. Saltwater-induced corrosion; 2. Abrasive debris scratching; 3. Overpressure spikes causing valve deformation.

1. Flush valves with fresh water after saltwater use; 2. Install high-efficiency debris filters; 3. Use pressure relief valves to prevent overpressure.

4

DHNO 1560965

Valve for NOV 14-P-220 Triplex Mud Pump

Abrasion-resistant alloy steel (AISI 4140) with hardened sealing surfaces (HRC 60-65), optimized for high-cycle drilling operations

1. Cyclic fatigue from prolonged high-cycle use; 2. Chemical degradation from high-pH mud additives; 3. Misalignment causing uneven wear.

1. Maintain fluid pH between 8-10; 2. Align valves with valve seats per API Spec 7K Clause 5.4; 3. Replace after 2,000 hours of high-cycle operation.

5

DHNO 1560964

Valve for NOV 14-P-220 Triplex Mud Pump

Abrasion-resistant alloy steel (AISI 4140) with hardened sealing surfaces (HRC 60-65), optimized for high-cycle drilling operations

1. Abrasive mud particle erosion; 2. Sticking from dried mud buildup; 3. Thermal degradation of surface coatings.

1. Clean valves immediately after pump shutdown; 2. Avoid prolonged exposure to dry drilling mud; 3. Monitor fluid temperature to protect surface coatings.

1

DHNO 060110053

Seat for NOV 14-P-220 Triplex Mud Pump

Nitrile Butadiene Rubber (NBR) with metal reinforcement, 70-75 durometer, resistant to oil, water-based mud, and moderate abrasion

1. Abrasive mud particle tearing; 2. Compression set from prolonged high-pressure operation; 3. Chemical degradation from aggressive additives.

1. Replace seats with valves to ensure proper sealing fit; 2. Avoid incompatible chemical additives; 3. Replace if seats show permanent compression (no rebound).

2

DHNO 1561410

Seat for NOV 14-P-220 Triplex Mud Pump

Fluorocarbon Rubber (Viton) with metal core, 75-80 durometer, resistant to high temps, chemicals, and aggressive drilling mud

1. Chemical attack from solvent-based additives; 2. Thermal stress from high-temperature fluid; 3. Abrasive debris embedding.

1. Verify additive compatibility with Viton; 2. Limit fluid temperature to 220°F; 3. Clean seat surfaces before installation to remove debris.

3

DHNO 055413256

Seat for NOV 14-P-220 Triplex Mud Pump

Ethylene Propylene Diene Monomer (EPDM) rubber, 70-75 durometer, resistant to water, steam, and mild chemicals for freshwater drilling

1. Swelling from excessive water absorption; 2. Abrasive debris tearing; 3. UV degradation if stored improperly.

1. Maintain proper mud water content; 2. Store seats in dark, dry containers; 3. Install suction strainers to filter debris.

4

DHNO 055409007

Seat for NOV 14-P-220 Triplex Mud Pump

Abrasion-resistant alloy steel (AISI 4140) with precision-machined sealing grooves, for heavy-duty high-pressure service

1. Abrasive mud particle scuffing; 2. Cyclic pressure fatigue; 3. Misalignment causing uneven pressure distribution.

1. Align seats with valves using precision tools; 2. Monitor pump pressure for abnormal spikes; 3. Inspect sealing grooves for wear quarterly.

1

DHNO 1560703

Spring for NOV 14-P-220 Triplex Mud Pump

High-tensile stainless steel (302), heat-treated for fatigue resistance, rated for continuous 7500 Psi service

1. Cyclic fatigue from high-cycle valve operation; 2. Corrosion from saltwater or aggressive mud; 3. Over-compression causing permanent deformation.

1. Inspect spring tension quarterly per NOV guidelines; 2. Use anti-corrosion treatments in harsh environments; 3. Avoid over-compression during installation.

2

DHNO 8201617

Spring for NOV 14-P-220 Triplex Mud Pump

High-tensile stainless steel (302), heat-treated for fatigue resistance, rated for continuous 7500 Psi service

1. Cyclic fatigue from prolonged use; 2. Thermal stress from extreme temperature swings; 3. Debris buildup causing binding.

1. Clean springs thoroughly during maintenance; 2. Avoid sudden fluid temperature adjustments; 3. Replace after 2,500 hours of operation.

3

DHNO 9705236

Spring for NOV 14-P-220 Triplex Mud Pump

Alloy steel (AISI 6150) with zinc plating for corrosion resistance, optimized for heavy-duty drilling applications

1. Corrosion from zinc plating wear; 2. Abrasive debris scratching; 3. Fatigue from uneven valve movement.

1. Inspect zinc plating for wear; 2. Install debris filters to protect springs; 3. Ensure valves move smoothly to prevent uneven spring stress.

1

DHNO 062400536

Insert for NOV 14-P-220 Triplex Mud Pump

Tungsten carbide-coated alloy steel, dual-hardened for extreme abrasion resistance, compatible with valve and seat assemblies

1. Extreme abrasive mud particle impact; 2. Coating peeling from improper installation; 3. Chemical degradation from aggressive additives.

1. Follow NOV’s installation procedure for insert alignment; 2. Verify additive compatibility with carbide coatings; 3. Inspect coating for chips monthly.

2

DHNO 1560567

Insert for NOV 14-P-220 Triplex Mud Pump

Abrasion-resistant alloy steel (AISI 4140), hardened to HRC 60-65, designed to protect valve sealing surfaces

1. Abrasive mud particle scuffing; 2. Cyclic pressure fatigue; 3. Misalignment causing uneven wear.

1. Align inserts with valve surfaces per API Spec 7K Clause 5.4; 2. Use API-compliant mud with controlled solids; 3. Replace if inserts show scoring or pitting.

3

DHNO 062400437

Insert for NOV 14-P-220 Triplex Mud Pump

Stainless steel (316L) with polished surfaces, ideal for corrosion-prone offshore drilling environments

1. Saltwater-induced corrosion; 2. Abrasive debris scratching; 3. Thermal stress from temperature swings.

1. Flush inserts with fresh water after saltwater use; 2. Install fine-mesh filters to remove debris; 3. Monitor fluid temperature to avoid thermal shock.

4

DHNO 1560705

Insert for NOV 14-P-220 Triplex Mud Pump

Tungsten carbide-coated alloy steel, dual-hardened for extreme abrasion resistance, optimized for heavy-duty service

1. Extreme abrasive mud particle impact; 2. Coating degradation from high temperatures; 3. Wear from valve misalignment.

1. Limit fluid temperature to protect carbide coatings; 2. Align valves and inserts with precision tools; 3. Replace if coating peeling exceeds 10% of surface area.

1

Should I replace valves, seats, springs, and inserts together for NOV 14-P-220 pumps?

It’s recommended to replace valves and seats as a matched set, as worn seats damage new valves (and vice versa). Replace springs and inserts with valve/seat sets if they show wear (e.g., spring fatigue, insert scoring) to ensure optimal sealing and performance, per NOV guidelines.

2

How do I choose between NBR, Viton, and EPDM valve seats for these pumps?

NBR (e.g., DHNO 060110053) suits oil/water-based mud; Viton (e.g., DHNO 1561410) for aggressive chemicals/high temps; EPDM (e.g., DHNO 055413256) for freshwater drilling. Match to your mud type and operating temperature to avoid premature failure.

3

What’s the typical service life for these components in NOV 14-P-220 pumps?

Valves/inserts last 2,000-2,500 hours; NBR/Viton/EPDM seats 800-1,200 hours; springs 2,500-3,000 hours. Shorten intervals for abrasive mud or high-cycle operations—inspect monthly and replace at first sign of wear (leakage, scoring, fatigue).