RGF800/RGF1000/RGF1300/HNA2500/HT400/TWS2250 Series High-Pressure Plunger Pump Fluid End Spare Parts

1. Product Overview & Target Application

1.1 Adaptable Equipment & User Core Demand

This full set of fluid end spare parts is exclusively matched with RGF800, RGF1000, RGF1300, HNA2500, HT400 and TWS2250 oilfield high-pressure plunger pumps, covering all vulnerable core components for water injection, fracturing and well flushing pump units. It precisely solves common on-site pain points including frequent seal aging, flange seepage, plunger packing wear, fastener failure and fluid end pressure instability under long-term cyclic load. The products serve professional users such as oilfield operation teams, equipment maintenance contractors and energy equipment supporting suppliers, meeting emergency replacement, daily maintenance and regular overhaul demands of high-pressure pump fluid ends.

1.2 Core Value & Authoritative Technical Basis

All components are manufactured and tested in strict compliance with API 7K oilfield equipment specifications and national GB standard fastener regulations, with three-stage non-destructive testing for key load-bearing parts. Relying on long-term oilfield accessory supporting experience, the product set achieves stable operation under 4.5MPa rated working pressure. Field verified exclusive data shows the optimized sealing combination maintains zero visible leakage within 30 minutes of 1.5 times rated pressure hydrostatic test, and the overall service life of wearing parts is 1.7 times that of ordinary conventional accessories, effectively reducing on-site equipment shutdown frequency.

2. Product Introduction & Functional Explanation

2.1 Complete Product Portfolio

The full-range accessories cover YL-YRMF-2 fig seal, suction/discharge cover seal, bearing seat packing, buffer ring, blind flange, retainer washer, suction flange, fixing clip, complete fluid end assembly, O-ring packing set, header ring, plunger plug washer, piston seal, cylinder liner end cover, circlip, pump bonnet, brass female adapter, discharge flange nut, backup ring, spring washer, lattern O-ring, suction spring cage, bonnet seal, stud, lock nut, spring anchorage bracket, V-belt, 10Mpa safety pin, sprinkler pipe assembly and full gasket set.

2.2 Core Functional Characteristics

Each component undertakes independent and irreplaceable fluid end system functions. The integral fluid end and cylinder liner bear medium compression and flow passage; multi-type sealing parts block high-pressure medium leakage at flange, plunger and end cover positions; spring anchorage components and valve guides ensure accurate reset and stable opening-closing of valve bodies; standard fasteners and locking parts eliminate structural looseness caused by long-term vibration; protective buffer parts reduce impact wear of medium impact and mechanical vibration on core moving parts.

3. Structural Features & Applicable Working Conditions

3.1 Optimized Structural Design

All parts adopt precision integral machining with matched tolerance controlled within 0.02mm. The upgraded lattern O-ring and multi-layer backup ring structure adapts alternating high-pressure cyclic working conditions; the reinforced spring anchorage bracket avoids spring deflection and failure; the integrated gasket set realizes full-channel uniform compression and sealing, overcoming the defect of local pressure leakage of traditional split gaskets.

3.2 Field Applicable Scenarios

This series of accessories adapts to conventional oilfield complex working conditions, with applicable ambient temperature ranging from -20℃ to 85℃ and anti-corrosion performance suitable for water injection and fracturing medium environments. It is widely used for daily maintenance and fault repair of high-pressure plunger pumps in onshore oilfield water injection stations, fracturing operation teams and well workover construction sites.

We supply the following spare parts:

4. On-Site Maintenance Specifications & Engineer Practical Suggestions

Follow API 7K standardized maintenance cycles for daily operation and maintenance. Conduct visual inspection of all sealing parts and fasteners every day; disassemble and check valve guide, spring cage and plunger wear every 500 working hours, replace parts when wear depth exceeds 0.5mm; implement 1.5 times rated pressure hydrostatic test for fluid end assembly every 1000 working hours. Engineers remind that mixed installation of new and old accessories is forbidden, which will cause vibration deviation and accelerated seal damage. After replacement, run the pump at half load for 40 minutes of running-in to ensure full fitting of matching surfaces.

5. On-Site Fault Maintenance Cases

Case 1: Changqing Oilfield RGF1000 Pump Suction Cover Severe Leakage

The RGF1000 pump operated stably under 4.5MPa full load for 7 months, with continuous suction cover medium leakage and reduced pump delivery capacity. After replacing the matched HNA-2500-4.5-11 suction cover seal and flat washer, the hydrostatic test showed no pressure drop within 30 minutes. The equipment recovered full rated flow, and the on-site team verified stable long-term operation without secondary leakage.

Case 2: Jilin Oilfield HT400 Pump Plunger Packing Failure

The HT400 pump had obvious friction resistance and medium backflow under rated load, caused by aging and wear of bearing seat packing and piston seal. After replacing the complete packing set and piston seal accessories, the plunger reciprocating operation was smooth, backflow phenomenon disappeared completely, and the equipment operation power consumption returned to standard value.

Case 3: Zhongyuan Oilfield TWS2250 Pump Flange Loosening Vibration

Long-term high-frequency operation caused loosening of discharge flange nuts and abnormal vibration of TWS2250 pump fluid end. After replacing special discharge flange nuts and spring washers, the pump body vibration amplitude decreased significantly, the structural rigidity of fluid end was restored, and it adapted to continuous high-load operation in field complex environment.

Case 4: Jianghan Oilfield RGF1300 Pump Bonnet Seal Aging Failure

The RGF1300 pump bonnet seal aged and failed after long-term operation, resulting in surface medium seepage. After replacing the special bonnet seal and cylinder head gasket, the sealing performance was fully restored, the equipment fault shutdown rate was eliminated, and the on-site maintenance efficiency was greatly improved.

6. Frequently Asked Questions

7. Procurement Reference & Technical Service Guidance

This series of RGF800/RGF1000/RGF1300/HNA2500/HT400/TWS2250 pump fluid end spare parts provides standardized procurement benchmark and professional technical maintenance reference for oilfield high-pressure pump supporting and on-site maintenance work. All products pass strict factory hydrostatic test, wear test and non-destructive flaw detection, with stable and reliable quality. We support flexible supply of single vulnerable parts and complete fluid end accessory sets, fully matching the diversified needs of field emergency repair, daily maintenance and equipment overall overhaul. With reliable product performance and mature supporting technology, it effectively solves various common fluid end faults of high-pressure plunger pumps, helps users reduce equipment operation failure rate and comprehensive maintenance cost, and guarantees long-term efficient and stable operation of oilfield pressure injection equipment.