Full-Open Valve and Seat Assemblies for Drilling Mud Pumps

Description

Goldenman supplies Mud Pump Valve and Seat Assemblies for reciprocating drilling pumps used in oil and gas drilling, workover, geothermal, mining and industrial fluid-circulation operations.

The available range covers selected pump families from:

• National
• Emsco
• Gardner Denver
• Oilwell
• Ideco
• Continental Emsco
• BOMCO
• Honghua
• Wirth
• Weatherford and Ellis Williams
• Drillmec
• American Block
• TSC
• Chinese 3NB and UNBT pump series

Standard assemblies can include:

• Full-open valve body
• Bonded elastomer insert
• Matched valve seat
• Valve spring
• Retaining hardware where required

Valve and seat assemblies are selected according to the exact pump model, valve size, valve-pot geometry, seat dimensions, original part number, operating pressure, pump speed, drilling-fluid chemistry and temperature.

National 10-P-130 and 12-P-160 valves and seats are included within the available compatibility range, but they represent only part of the complete Goldenman product series.

Product Short Description

Goldenman Mud Pump Valves and Seats control suction and discharge flow through the Fluid End during every piston stroke.

The available full-open assemblies use a heat-treated metallic valve and matched seat combined with an application-specific elastomer insert and valve spring.

Standard, abrasive-service and elevated-temperature elastomer options can be developed for water-based, oil-based and synthetic-based drilling fluids after reviewing the actual mud chemistry and operating conditions.

Replacement assemblies can be supplied by verified pump model, original part number, dimensional drawing or unused sample.

Product Highlights

• Full-open Mud Pump Valve and Seat Assemblies
• Suction- and discharge-valve applications
• Compatible references for multiple pump manufacturers
• National 10-P-130 and 12-P-160 options
• API 6-size and API 7-size valve references
• Standard and modified dimensional configurations
• Bonded elastomer insert construction
• Polyurethane and HNBR material options
• Matched valve, seat and spring sets
• Controlled valve-to-seat contact geometry
• Heat-treated alloy-steel components
• Abrasion- and erosion-resistant configurations
• Water-based, oil-based and synthetic-based mud options
• Replacement by part number or drawing
• Material and batch traceability
• Dimensional and hardness inspection
• Contact-pattern and functional inspection
• Project-specific spare-parts packages
• Export packaging and identification

What Is a Mud Pump Valve and Seat Assembly?

A Mud Pump Valve and Seat Assembly is a high-wear Fluid End component that controls the direction of drilling-fluid flow.

Each pumping chamber normally has:

• A suction valve and seat
• A discharge valve and seat

During the suction stroke, the suction valve opens and allows drilling fluid to enter the chamber while the discharge valve remains closed.

During the discharge stroke, the suction valve closes and the discharge valve opens, allowing pressurized drilling fluid to leave the chamber.

The valve assembly must therefore:

• Open with low flow restriction
• Close rapidly
• Seal against the seat
• Resist repeated impact
• Withstand abrasive solids
• Maintain alignment
• Resist chemical and thermal degradation
• Operate consistently at the specified pump speed

Valve performance directly affects:

• Pump volumetric efficiency
• Discharge-pressure stability
• Flow pulsation
• Fluid End noise
• Pump vibration
• Power consumption
• Maintenance frequency
• Unplanned drilling downtime

Main Assembly Components

Valve Body

The Valve Body transfers spring force, fluid force and repeated impact into the seat.

Important design features include:

• Valve head diameter
• Flow-opening geometry
• Number and shape of guide legs
• Valve stem dimensions
• Elastomer-retaining groove
• Contact angle
• Overall height
• Material grade
• Heat-treatment condition
• Surface hardness

Goldenman should publish whether each valve body is:

• One-piece forged;
• One-piece machined;
• Two-piece friction welded;
• Two-piece fusion welded; or
• Manufactured using another approved process.

A two-piece construction should not be claimed across the complete product range unless all model drawings support it.

Elastomer Insert

The insert creates the primary dynamic sealing interface between the valve and seat.

Its performance depends on:

• Elastomer chemistry
• Hardness
• Bonding method
• Insert thickness
• Retaining-groove geometry
• Mud chemistry
• Temperature
• Pressure
• Solids content
• Pump speed

Depending on the approved design, the insert can be:

• Permanently bonded to the valve body
• Mechanically retained
• Replaceable
• Molded as part of a complete valve assembly

The current Goldenman product images primarily show bonded-insert valves. Replaceable-insert configurations should only be advertised when corresponding drawings and part numbers are available.

Valve Seat

The Valve Seat is installed in the Fluid End valve pot and provides the sealing surface for the valve.

Critical seat dimensions include:

• Outside diameter
• Overall height
• Taper angle
• Valve contact angle
• Internal flow diameter
• Top-face profile
• Extraction groove
• Installation shoulder
• Seat material
• Heat treatment
• Surface hardness

A correct valve does not guarantee correct operation if the seat taper or installation dimensions do not match the Fluid End.

Valve Spring

The spring helps return the valve to the closed position.

Selection parameters include:

• Free length
• Outside diameter
• Wire diameter
• Number of active coils
• Spring rate
• Installed height
• Compression range
• Material
• Heat treatment
• Rotation direction where relevant

A spring that is too weak may delay valve closing.

A spring that is too strong may increase flow restriction, impact and mechanical stress.

The spring must match the valve and pump-speed requirement.

Full-Open Valve Design

A full-open valve is designed to provide a relatively large flow area through the valve and seat assembly.

Potential benefits include:

• Reduced flow restriction
• Improved filling of the pumping chamber
• Lower local fluid velocity
• Reduced pressure loss
• Improved flow efficiency
• Reduced erosion in correctly designed applications

The term “full open” does not mean the valve has no internal obstruction.

The actual flow area depends on:

• Seat inside diameter
• Valve guide-leg geometry
• Valve lift
• Spring characteristics
• Fluid viscosity
• Pump speed
• Valve-pot geometry

General Technical Specifications

Parameter	Available Configuration
Product	Mud Pump Valve and Seat Assembly
Main application	Suction and discharge valves for reciprocating drilling pumps
Product-standard positioning	Applicable API Spec 7K requirements for Piston Mud Pump Components
Valve design	Full-open, model-specific
Typical size references	API 6 size, API 7 size and modified configurations
Valve body	Heat-treated alloy steel according to approved drawing
Valve seat	Heat-treated alloy steel according to approved drawing
Insert type	Bonded or approved mechanically retained elastomer
Insert materials	Polyurethane, high-temperature polyurethane or HNBR according to application
Spring	Model-specific alloy or spring steel
Mud compatibility	Confirmed from fluid chemistry and temperature
Pressure capability	Determined by pump, Fluid End, valve size and approved configuration
Temperature capability	Compound- and test-specific
Inspection	Dimensional, hardness, surface, contact-pattern and functional inspection
Replacement basis	Pump model, part number, drawing or unused sample

Compatible Pump References

National Mud Pumps

Selected applications include:

• 7-P-50
• 8-P-80
• 9-P-100
• 10-P-130
• 12-P-160
• 14-P-220
• JWS-165-L
• JWS-340
• JWS-400
• N-1000
• N-1300
• N-1600

The 10-P-130 and 12-P-160 models should remain prominent in the National compatibility section because they are included in the existing URL and image names.

Emsco and Continental Emsco

Selected references include:

• F-350
• F-500
• F-650
• F-800
• F-1000
• FA-1300
• FB-1300
• FA-1600
• FB-1600
• FC-1600
• FD-1600
• D-series and related pump configurations

Gardner Denver

Selected references include:

• PZ-7
• PZ-8
• PZ-9
• PZ-10
• PZ-11
• PAH-275
• Selected duplex and triplex pump families

The brand must be written as Gardner Denver, not “Gardener Denver.”

Oilwell

Selected references include:

• 350-PT
• A-650P-T
• A-850-PT
• A-1100-PT
• A-1400-PT
• A-1700-PT
• HD-1400-PT
• HD-1700-PT
• 612-P
• 700-P
• 816-P
• 818-P
• 1000-P

The brand should be written as Oilwell, not “Oil well.”

Ideco

Selected references include:

• T-500
• T-800
• T-1000
• T-1300
• T-1600
• MM-450
• MM-500-F
• MM-600-A
• MM-700-F
• MM-1000

BOMCO and Honghua

Selected references include:

• BOMCO F-500
• F-800
• F-1000
• F-1300
• F-1600
• F-1600HL
• Honghua HHF-500
• HHF-800
• HHF-1000
• HHF-1300
• HHF-1600
• HHF-1600HL
• HHF-2200HL

Other Pump Families

Additional replacement references can include:

• Wirth TPK series
• Russian UNB and UNBT pumps
• Chinese 3NB series
• Weatherford and Ellis Williams pumps
• Drillmec T-series
• Upetrom 3PN series
• American Block K-series
• Loadmaster LSF series
• TSC WF and WFU series
• TFI F-series
• Lewco and EWCO pumps
• GASO and Wheatley pumps
• Other models confirmed by drawing

All third-party names and model numbers are used only to identify the intended replacement application.

Goldenman products should not be represented as genuine OEM components of another manufacturer unless documented original parts are specifically supplied.

Pump Model Alone Is Not Enough

A pump model may use:

• Different valve sizes
• Different Fluid End modules
• Standard and modified valve pots
• Different seat tapers
• Different valve springs
• Different pressure configurations
• Different part-number revisions

An inquiry stating only:

Valve and Seat for National 12-P-160

may therefore be incomplete.

The buyer should also provide:

• Existing valve part number
• Existing seat part number
• Spring part number
• Valve size
• Valve-pot dimensions
• Fluid End part number
• Original drawing
• Photographs of the removed components

Material Selection

Standard Polyurethane Insert

A standard polyurethane insert can be considered for compatible:

• Water-based drilling mud
• Abrasive solids service
• Moderate fluid temperature
• General drilling operations
• Applications requiring tear and wear resistance

Actual performance depends on the specific formulation.

The webpage should not describe every polyurethane insert as suitable for all water-, oil- and synthetic-based mud systems.

Hydrolysis-Resistant Polyurethane

A hydrolysis-resistant formulation may be selected for:

• Heated water-based mud
• Long-duration water exposure
• High-salinity water-based systems
• Repeated thermal cycling
• Severe abrasive service

Goldenman should identify whether this is a separately validated compound rather than using “premium polyurethane” as a general marketing term.

HNBR Insert

HNBR may be considered for:

• Oil-based mud
• Synthetic-based mud
• Elevated temperatures
• Chemical additives
• Applications where oil and thermal resistance are more important

HNBR should still be reviewed for:

• Mud additives
• Maximum temperature
• Solids content
• Valve impact
• Required sealing life

No elastomer should be described as universally suitable for every mud system.

Heavy-Duty and High-Temperature Options

Goldenman may divide its product range into:

• Standard Duty
• Abrasive Duty
• High-Temperature Duty
• Oil-Based Mud Duty

Each grade should have a verified technical datasheet showing:

• Elastomer family
• Hardness
• Approved mud systems
• Normal temperature range
• Maximum qualified temperature
• Pressure range
• Valve size
• Identification color
• Batch code

Color alone should not be used as proof of material or temperature capability.

Yellow, orange, red, blue or black inserts may represent different compounds depending on the manufacturer.

Pressure Rating

A Valve and Seat Assembly does not have a meaningful universal pressure rating independent of the pump.

The permitted operating pressure depends on:

• Pump model
• Fluid End pressure rating
• Valve size
• Seat dimensions
• Liner bore
• Pump speed
• Valve lift
• Material and heat treatment
• Mud temperature
• Fluid density
• Condition of the valve pot

Recommended website wording:

Maximum Operating Pressure: Confirmed according to the selected pump, Fluid End, valve size and approved operating configuration.

Goldenman should not publish 7,500 psi, 10,000 psi or another value across the complete range without model-specific engineering support.

Temperature Rating

Temperature capability is primarily controlled by:

• Insert compound
• Bonding system
• Mud chemistry
• Continuous exposure time
• Pressure
• Valve impact frequency
• Cooling and circulation conditions

A high-temperature claim should be supported by:

• Compound identification
• Laboratory test method
• Exposure duration
• Fluid type
• Acceptance criteria
• Batch-control procedure

Competitor temperature ratings should not be copied into Goldenman product data.

Valve and Seat Matching

A valve and seat should be treated as a matched sealing system.

Compatibility requires alignment of:

• Valve contact angle
• Seat contact angle
• Valve diameter
• Seat bore
• Valve lift
• Guide-leg clearance
• Spring force
• Insert profile
• Fluid End geometry

Mixing a new valve with an incorrect or severely worn seat can cause:

• Incomplete sealing
• Edge loading
• Rapid insert damage
• Seat-face erosion
• Pressure fluctuation
• Valve impact
• Reduced pump output

For critical service, Goldenman should supply the valve, seat and spring as a verified matched set.

Suction vs Discharge Valve Requirements

Some pump designs use the same valve and seat in suction and discharge positions.

Other designs may use different:

• Springs
• Valve lifts
• Part numbers
• Installation hardware
• Operating conditions

The buyer should identify whether the requirement is for:

• Suction valve
• Discharge valve
• Both positions
• One complete Fluid End
• One complete pump

A triplex pump may require multiple assemblies, and the recommended spare quantity should account for all three pumping chambers.

Common Valve and Seat Failure Modes

Elastomer Insert Wear

Possible causes include:

• Abrasive solids
• High pump speed
• Excessive temperature
• Chemical incompatibility
• Poor valve-to-seat alignment
• Damaged seat surface

Insert Extrusion or Separation

Possible causes include:

• Excessive pressure
• Incorrect compound
• Bonding failure
• High temperature
• Damaged retaining groove
• Incompatible seat geometry

Seat-Face Erosion

High-velocity leakage across a partially sealed surface can create wire-drawing or channel erosion.

Possible causes include:

• Solids trapped on the seat
• Delayed valve closing
• Worn insert
• Incorrect spring
• Damaged contact surface
• Misalignment

Valve Body or Guide-Leg Wear

Possible causes include:

• Abrasive flow
• Valve-pot misalignment
• Excessive valve movement
• High pump speed
• Damaged guides
• Incorrect valve size

Spring Fatigue

Possible symptoms include:

• Slow closing
• Valve chatter
• Pressure fluctuation
• Increased impact
• Broken coils
• Inconsistent pump output

Seat Movement

A seat that is not installed correctly can:

• Move inside the valve pot
• Damage the taper
• Leak around the outside diameter
• Become difficult to remove
• Damage the Fluid End module

Symptoms of Valve Failure

Possible operating symptoms include:

• Reduced pump output
• Unstable discharge pressure
• Pressure pulsation
• Abnormal Fluid End noise
• Valve chatter
• Increased vibration
• Pump heating
• Internal fluid bypass
• Repeated insert failure
• Unexpected loss of volumetric efficiency

These symptoms can also result from piston, liner, Fluid End or pulsation-damper problems, so the complete Fluid End should be inspected.

Installation Requirements

Before installing a valve and seat:

1. Isolate and depressurize the Mud Pump.
2. Confirm the pump and Fluid End model.
3. Verify valve, seat and spring part numbers.
4. Clean the valve pot completely.
5. Inspect the seat taper.
6. Remove corrosion, scale and foreign material using the approved procedure.
7. Inspect the valve guide and cover components.
8. Use the approved seat-installation tool.
9. Confirm full and even seating.
10. Install the matched valve and spring.
11. Reassemble the valve cover according to the pump procedure.
12. Start the pump under controlled conditions.
13. Monitor pressure, noise and leakage.

Do not substitute uncontrolled hammering, grinding or field machining for the approved installation procedure.

Valve Seat Removal

Seat removal should use a suitable:

• Hydraulic Seat Puller
• Mechanical Seat Puller
• Model-specific extraction tool

Before removal:

• Depressurize the pump
• Secure the equipment
• Remove the valve and spring
• Confirm puller engagement
• Protect the Fluid End taper
• Keep personnel clear of the extraction path

A damaged puller or incorrect engagement can damage both the seat and Fluid End module.

Inspection and Replacement Criteria

Inspect the valve for:

• Insert wear
• Cuts
• Cracks
• Hardening
• Swelling
• Extrusion
• Bond separation
• Guide-leg wear
• Stem wear
• Body cracking
• Uneven contact

Inspect the seat for:

• Contact-face erosion
• Pitting
• Grooving
• Cracks
• Taper damage
• Corrosion
• Outside-diameter damage
• Extraction-groove damage
• Uneven contact pattern

Inspect the spring for:

• Broken coils
• Corrosion
• Permanent shortening
• Distortion
• Surface cracking
• Loss of spring force

Replace the complete matched set when wear or damage prevents reliable sealing.

Manufacturing and Quality Control

Goldenman manufacturing and inspection controls can include:

• Raw-material certificate verification
• Heat-number traceability
• Valve-body dimensional inspection
• Valve-seat dimensional inspection
• Taper-angle inspection
• Contact-angle inspection
• Flow-opening inspection
• Valve-guide inspection
• Heat-treatment record verification
• Surface-hardness testing
• Core-hardness testing where required
• Spring dimensional and load testing
• Elastomer batch identification
• Elastomer-hardness testing
• Bonding-process control
• Visual inspection for porosity and separation
• Valve-to-seat contact-pattern inspection
• Concentricity and runout inspection
• Model and part-number marking
• Final documentation review

Any stated fatigue life, temperature limit or pressure rating should be supported by a defined test procedure.

Frequently Asked Questions

Is this page only for National 10-P-130 and 12-P-160?

No.

Those models are included, but the page covers a broader range of Mud Pump Valves and Seats for National, Emsco, Gardner Denver, Oilwell, Ideco, BOMCO, Honghua, 3NB and other pump families.

Does “API 7 Valve” mean API Spec 7K?

No.

API 7 is commonly used as a valve-size designation. API Spec 7K is the applicable drilling-equipment standard under which Piston Mud Pump Components are categorized.

Can one API 7-size valve fit every pump using an API 7 valve?

Not automatically.

Standard and modified versions may differ in valve height, seat taper, guide geometry, spring and part number.

Can 10-P-130 and 12-P-160 use the same valve and seat?

They may share certain valve-size families or consumable designs, but direct interchangeability must be confirmed from the Fluid End, valve and seat part numbers.

The pump model names alone are insufficient.

Is the yellow insert always polyurethane?

Not necessarily.

Color systems vary by manufacturer. Insert material must be confirmed from the Goldenman part number and compound record.

Is polyurethane suitable for oil-based mud?

Only when the specific polyurethane formulation has been validated for the oil content, additives and operating temperature.

HNBR may be more appropriate for demanding oil-based or synthetic-based mud service.

Can a new valve be installed on a used seat?

Only when the seat remains within its dimensional and surface acceptance limits.

A worn, pitted or eroded seat can rapidly damage a new valve insert.

Why does a valve insert separate from the body?

Possible causes include high temperature, chemical attack, bonding failure, excessive pressure, incorrect seat geometry or damaged retaining surfaces.

What causes wire-drawing on a valve seat?

Wire-drawing is localized erosion caused by high-velocity leakage across an incomplete sealing area.

It can result from trapped solids, insert damage, incorrect spring force, misalignment or seat-face defects.

Does the valve have an independent 7,500 psi rating?

Not necessarily.

Pressure capability must be evaluated with the complete pump, Fluid End, valve size, liner bore and operating conditions.

Should the valve spring be replaced with the valve?

The spring should be inspected and replaced when its dimensions, force, condition or part number do not meet the approved requirement.

For severe service, supplying a complete matched set reduces compatibility risk.

What data are required for a replacement valve and seat?

Provide the pump model, Fluid End model, valve size, valve part number, seat part number, spring part number, dimensions, mud type, temperature, pressure and photographs.

Information Required for Quotation

Please provide:

• Pump manufacturer
• Pump model
• Pump serial number
• Fluid End model or part number
• Suction or discharge position
• Valve-size designation
• Existing valve part number
• Existing seat part number
• Existing spring part number
• Valve outside diameter
• Valve overall height
• Seat outside diameter
• Seat overall height
• Seat taper
• Spring dimensions
• Water-based, oil-based or synthetic-based mud
• Mud weight
• Solids content
• Sand content
• Oil-water ratio
• Chloride content
• pH
• Chemical additives
• Normal mud temperature
• Maximum mud temperature
• Normal discharge pressure
• Maximum discharge pressure
• Pump strokes per minute
• Required insert material
• Required quantity
• API documentation requirement
• Inspection requirements
• Destination country
• Required delivery schedule

For custom or cross-reference orders, also provide an approved drawing or unused sample.

Request a Technical Quotation

Goldenman supplies Full-Open Mud Pump Valve and Seat Assemblies for National, Emsco, Gardner Denver, Oilwell, Ideco, BOMCO, Honghua, Wirth, 3NB, UNBT and other drilling pump families.

National 10-P-130 and 12-P-160 configurations are available after confirmation of the valve size, Fluid End, part numbers and operating conditions.

Send your pump model, valve and seat part numbers, mud type, temperature, pressure and required quantity to:

Email: info@goldenman.com

Goldenman will review the complete interface and prepare the recommended valve, seat, spring, elastomer compound, inspection requirements and commercial quotation.