Trash Catcher | DEENPU Machinery

Trash Catcher

DEENPU trash catchers protect downstream equipment by efficiently removing debris, sand, and solids from high-pressure well service flow streams. Field-proven designs with precision-machined components, available in 2″, 3″, and 4″ sizes with 1502 and 1002 connections.

10,000 – 15,000 PSI
NACE MR0175 Compliant
2″ to 4″ Sizes
1502 / 1002 Union
No Special Tools Needed

Product Overview

DEENPU Trash Catchers are essential protection devices used in high-pressure well service operations to remove debris, sand, proppant, scale, and other solid contaminants from the flow stream before they can damage downstream equipment such as chokes, valves, pumps, and separators. Based on field-proven designs that have been refined through years of real-world operational feedback, DEENPU trash catchers deliver reliable solids separation with minimal pressure drop and easy maintenance.

Each DEENPU trash catcher features a precision-machined cylindrical vessel housing a removable wire-mesh screen assembly. The screen captures solids while allowing fluid to pass through the vessel and continue downstream. The captured debris accumulates in the bottom of the vessel, and when the pressure differential across the screen indicates sufficient loading, the vessel can be quickly opened and cleaned without requiring any special tools.

DEENPU trash catchers are manufactured in-house from the highest quality alloy steel forgings, with stringent quality control and statistical process control applied at every stage. Available in 2″, 3″, and 4″ sizes with 1502 and 1002 hammer union connections, our trash catchers integrate seamlessly with standard well service manifold configurations. Both single and dual trash catcher manifolds are available, as well as custom configurations to match your specific wellsite requirements.

How It Works

DEENPU trash catchers operate on the principle of mechanical filtration. High-pressure fluid enters the trash catcher vessel through the inlet connection and is directed into the cylindrical screen chamber. The flow passes radially through the wire-mesh screen, which traps solid particles larger than the mesh opening size while allowing the clean fluid to exit through the outlet.

As solids accumulate on the screen surface, the pressure differential across the trash catcher gradually increases. A differential pressure gauge installed across the inlet and outlet ports provides a clear indication of screen loading. When the differential pressure reaches the recommended service limit (typically 500-1,000 PSI), the operator isolates the trash catcher using the upstream and downstream plug valves, depressurizes the vessel, and opens the quick-release cover to remove the screen assembly for cleaning.

The entire cleaning process requires no special tools and can be completed in minutes by a trained technician. The wire-mesh screen is removed, cleaned with a high-pressure water jet or brush, inspected for damage, and reinstalled. The quick-release cover is re-secured, and the vessel is re-pressurized and returned to service. This simple, efficient maintenance process minimizes downtime and reduces total cost of ownership.

Key Features

Field-Proven Design

Based on designs refined through years of real-world operation in the most demanding well service environments. DEENPU trash catchers have been validated under continuous high-pressure, high-velocity flow conditions with abrasive sand and proppant loading.

No Special Tools Required

The quick-release cover and screen assembly are designed for hand-tool disassembly only. No special wrenches, jigs, or workshop equipment are needed for routine cleaning and maintenance, making field servicing fast and straightforward.

Precision-Machined In-House

All pressure-containing components are precision-machined in DEENPU’s own manufacturing facilities using CNC machining centers. This ensures tight dimensional tolerances, excellent surface finish, and consistent quality across every production batch.

High-Quality Screen Material

The removable wire-mesh screen is manufactured from high-strength stainless steel with optimized mesh sizing for effective solids capture while maintaining acceptable flow capacity. Screens are available in multiple mesh sizes to match your debris profile.

NACE Sour Service Ready

Available in NACE MR0175 compliant configurations for H2S sour gas environments. NACE trash catchers are rated at 10,000 PSI and feature controlled-hardness materials and H2S-resistant seals. Standard non-NACE units are rated at 15,000 PSI.

Single or Dual Configuration

DEENPU offers single trash catcher manifolds for straightforward installations, as well as dual trash catcher configurations that provide redundant protection and allow alternate cleaning without interrupting flow. Custom configurations are also available.

Dimensions

Nominal Size	A	B	C
2″ 1502	60.65″	9.41″	12.04″
3″ 1502	60.65″	9.13″	12.56″
4″ 1002	63.94″	9.13″	14.90″
4″ 1502	63.94″	9.13″	14.90″

All dimensions are approximate and subject to final engineering confirmation. Custom dimensions available upon request.

Standard Configurations

DEENPU 2″ x 3″ 9-Valve Trash Catcher Manifold (DN-FSM-5000-25)

A dual trash catcher manifold featuring two 1502 trash catcher vessel assemblies with integral side outlet tees, combined with seven 3″ x 2″ 1502 manual plug valves for comprehensive flow control and isolation.

Item	Quantity	Description
1	2	3″ 1502 F x F x M TEE Body
2	2	3″ x 2″ 1502 Trash Catcher
3	2	2″ 1502 Spacer (6.00″)
4	5	2″ 1502 Plug Valve
5	1	3″ 1502 Inlet Cross F x M x M x M
6	1	2″ 1502 Spacer (24.00″)
7	1	2″ 1502 Outlet Cross M x F x F x F
8	2	3″ x 2″ 1502 Crossover (6.25″)
9	2	3″ 1502 Male Blanking Cap
10	2	3″ 1502 Plug Valve

DEENPU 2″ x 3″ 12-Valve Trash Catcher Manifold (DN-FSM-5000-19)

An expanded dual trash catcher manifold with two 1502 trash catcher vessel assemblies and twelve 3″ x 2″ 1502 manual plug valves, providing enhanced flow routing flexibility and redundant isolation paths.

Item	Quantity	Description
1	2	Male Blanking Cap
2	2	3″ 1502 F x F x M TEE Body
3	2	3″ x 2″ 1502 Trash Catcher
4	4	3″ 1502 Plug Valve
5	5	2″ 1502 Plug Valve
6	1	3″ to 2″ Crossover M x F (6.25″)
7	2	2″ 1502 Spacer (9.76″)
8	1	3″ 1502 Inlet Cross F x M x M x M
9	1	2″ 1502 Outlet Cross M x F x F x F
10	1	2″ 1502 Spacer (10.47″)

DEENPU 4″ 1502 Trash Catcher Manifold (DN-FSFM-4200-2)

A high-capacity 4″ trash catcher manifold featuring two 4″ 1502 trash catcher vessel assemblies with 3″ 1502 gear-operated plug valves for heavy-duty flowback and well testing operations.

Item	Quantity	Description
1	2	Mod. 4″ 1502 x 3″ 1502 Tee (4″ F x M x 3″ F)
2	2	3″ 1502 Gear Operated Plug Valve
3	1	Crossover 3″ 1502 F x 2″ 1502 M
4	1	3″ 1502 Cross F x M x M x M
5	1	2″ 1502 NPST Pipe (57.26″)
6	3	2″ 1502 Plug Valve
7	1	2″ 1502 Cross M x F x F x F
8	2	2″ 1502 Spacer (7.23″)
9	2	4″ 1502 x 2″ 1502 Tee (4″ F x F x 2″ M)
10	2	4″ 1502 NPST Pipe (72.00″) with 2.5″ LP Screen
11	2	Mod. Crossover, 4″ 1502 Male x 2″ 1502 Female
12	2	4″ 1502 M Blanking Cap
13	1	Screen

Applications

DEENPU Trash Catchers are essential protection equipment across a wide range of well service and production operations:

Flowback Operations

Hydraulic Fracturing

Well Testing

Coiled Tubing

Well Cleanout

Sand Separator Protection

Production Choke Guard

Pump Protection

Workover & Completion

Technical Specifications

Parameter	Standard Service	NACE Sour Service
Working Pressure	15,000 PSI (103.4 MPa)	10,000 PSI (68.9 MPa)
Nominal Size	2″ / 3″ / 4″	2″ / 3″ / 4″
End Connection	1502 / 1002 Hammer Union	1502 / 1002 Hammer Union
Inlet	2″ 1502 F / 3″ 1502 F / 4″ 1002/1502 F	2″ 1502 F / 3″ 1502 F / 4″ 1002/1502 F
Outlet	2″ 1502 M / 3″ 1502 M / 4″ 1002/1502 M	2″ 1502 M / 3″ 1502 M / 4″ 1002/1502 M
Temperature Class	P to U	P to U
Service Environment	Standard (non-H2S)	H2S Sour Gas (per NACE MR0175)
Body Material	AISI 4130 / 4140 Alloy Steel	AISI 4130 NACE-Compliant
Seal Material	HNBR / PTFE	HNBR / FFKM (H2S resistant)
Screen Material	Stainless Steel Wire Mesh	Stainless Steel Wire Mesh

Screen Mesh Options

DEENPU trash catchers are available with a range of screen mesh sizes to match your specific debris profile and flow requirements. Standard mesh sizes include 20, 40, 60, 80, and 100 mesh. Custom mesh sizes and multi-layer screen configurations are available upon request. Consult our engineering team to select the optimal screen specification for your application.

Trash Catcher Screen Technology

Removable Screen Assembly

The wire-mesh screen is mounted on a rigid cylindrical frame that slides into the trash catcher vessel. This removable design allows the screen to be completely extracted for cleaning, inspection, and replacement without disturbing the vessel body or piping connections.

High-Strength Stainless Steel

Screen mesh is woven from high-grade stainless steel wire with excellent corrosion resistance and mechanical strength. The mesh maintains structural integrity under high differential pressure and is resistant to the corrosive effects of formation fluids, H2S, and CO2.

Optimized Flow Geometry

The screen is designed with a large cylindrical surface area that provides sufficient flow capacity while maintaining effective solids capture. The flow geometry minimizes turbulence and pressure drop, ensuring the trash catcher does not become a flow bottleneck.

Ordering Guide

To request a quotation or place an order, please specify the following information:

Size & Pressure

Nominal size (2″, 3″, or 4″), desired working pressure rating (10,000 PSI NACE or 15,000 PSI standard), and end connection type (1002 or 1502).

Service Condition

Standard service or NACE MR0175 sour service. For sour service, provide H2S concentration, CO2 levels, and operating temperature range.

Configuration & Quantity

Single or dual trash catcher manifold, preferred valve count and layout, or specify custom configuration. Indicate desired quantity and delivery schedule.

Custom Manufacturing

Beyond standard configurations, DEENPU offers fully customized trash catcher solutions to meet your specific operational requirements:

Custom Manifold Layouts

Any combination of trash catcher vessels, plug valves, and header routing can be designed to match your existing wellsite equipment footprint and connection requirements.

Special Screen Materials

Available with duplex stainless steel, super duplex, Inconel, and Monel screen materials for highly corrosive environments including high CO2 and chloride content.

Differential Pressure Monitoring

Manifolds can be fitted with differential pressure gauges, transducers, and remote monitoring interfaces to provide real-time indication of screen loading and automatic alerts for cleaning cycles.

Quality Control & Testing

DEENPU maintains ISO 9001:2015 certified quality management systems. Every trash catcher is subjected to the following quality assurance before shipment:

Material & Dimensional Inspection

100% chemical composition and mechanical property verification on all pressure-containing forgings. Positive Material Identification (PMI) testing. Critical dimensions verified against engineering drawings.

Pressure Testing

Individual trash catcher vessel tested at 1.5x rated working pressure for shell integrity. Completed manifold assembly tested at rated working pressure for seat leakage and bubble-tight seal verification.

Functional & Operational Verification

All plug valves cycled through full open-to-close sequence. Trash catcher cover and screen assembly tested for smooth assembly and disassembly. Screen fit and retention verified under simulated vibration.

Frequently Asked Questions

How often should the trash catcher screen be cleaned? ▼

Cleaning frequency depends on the solids loading in the flow stream. In heavy sand flowback operations, the screen may need cleaning every 4-8 hours. In relatively clean well testing operations, the screen may operate for several days before cleaning is required. The best practice is to monitor the differential pressure across the trash catcher and clean when the pressure drop reaches 500-1,000 PSI above the clean baseline. This approach ensures optimal flow capacity while preventing screen damage from excessive differential pressure.

What mesh size should I choose for my application? ▼

Mesh size selection depends on the particle size distribution of the debris you need to capture. For general flowback protection against sand and proppant, 40-60 mesh is commonly used. For finer solids protection such as scale and corrosion products, 80-100 mesh may be preferred. The trade-off is that finer mesh provides better solids capture but with higher pressure drop and more frequent cleaning. DEENPU engineers can recommend the optimal mesh size based on your specific application data.

Can the trash catcher be used in sour gas service? ▼

Yes. DEENPU offers NACE MR0175 compliant trash catchers specifically designed for H2S sour gas environments. These units feature controlled-hardness materials (maximum HRC 22 for pressure-containing components), H2S-resistant elastomer seals, and NACE-compliant bolting. Sour service trash catchers are rated at 10,000 PSI. Standard (non-NACE) trash catchers are rated at 15,000 PSI. Please specify the service environment when ordering to ensure you receive the correct configuration.

Are spare screens and seals readily available? ▼

Yes. DEENPU maintains a comprehensive inventory of genuine OEM spare parts including replacement screen assemblies, seal kits, and cover gaskets for all standard trash catcher sizes. Most spare parts ship within 24 hours. We recommend stocking at least one spare screen assembly per trash catcher on location for high-utilization operations, allowing immediate screen swap while the dirty screen is cleaned at a convenient time.

What certifications come with the trash catcher? ▼

Standard documentation includes Material Test Reports (MTRs) for all pressure-containing components, hydrostatic test certificates, functional test reports, and a Certificate of Conformance. Upon request, we provide third-party inspection (API Q1 / ISO 9001), NACE compliance certificates, NDE reports (MPI, UT), and country-specific import certification packages.

What is the lead time for a custom trash catcher manifold? ▼

Standard single and dual trash catcher manifolds typically ship within 6-8 weeks. Custom configurations requiring unique layouts, special materials, or additional instrumentation may require 10-12 weeks depending on design complexity. DEENPU offers expedited manufacturing options for urgent requirements. Contact our sales team with your specific needs for a detailed delivery schedule.

Get a Quote for DEENPU Trash Catchers

Contact our sales team today to discuss your trash catcher requirements. We provide rapid quotations, technical support, and global shipping.

EMAIL

SALES@DEENPU-MACHINERY.COM

+86-15806284962