Adjustable Choke Manifold | DEENPU Machinery

Adjustable Choke Manifold

DEENPU adjustable choke manifolds deliver precise flow control and extended service life for high-pressure well service operations. Built with solid carbide-tipped adjustable chokes and DEENPU plug valves, our manifolds offer accurate, field-serviceable flow control in both standard and H2S sour service environments.

10,000 – 15,000 PSI
NACE MR0175 Compliant
2″ & 3″ Sizes
1502 Hammer Union
Custom Configurations

Product Overview

DEENPU Adjustable Choke Manifolds are engineered to provide precise, reliable flow control in demanding well service applications including hydraulic fracturing, flowback, coiled tubing, and well testing. By combining DEENPU adjustable choke technology with high-performance plug valves, these manifolds deliver accurate flow restriction and pressure management while significantly extending service life compared to conventional choke manifold designs.

The heart of each DEENPU adjustable choke manifold is a precision adjustable choke featuring a solid carbide tip insert. This carbide tip provides exceptional wear resistance in erosive, high-velocity flow conditions, while its replaceable design allows for quick, economical field maintenance without removing the entire choke assembly. Standard hand tools are sufficient for carbide tip replacement, minimizing downtime and reducing total cost of ownership.

All DEENPU choke manifolds are built on a robust skid frame with integrated support legs and lifting lugs, ensuring safe transport and stable placement at the wellsite. The modular design allows easy reconfiguration and expansion, and every manifold is factory-tested to verify pressure integrity and proper valve sequencing before shipment.

How It Works

DEENPU adjustable choke manifolds function as a flow distribution and pressure control system at the wellhead or wellsite. High-pressure fluid from the well or fracturing equipment enters the manifold through the inlet header and is distributed through multiple parallel flow paths. Each path contains an adjustable choke that provides precise control of the flow rate and downstream pressure.

The adjustable choke mechanism consists of a hardened needle and seat assembly with a solid carbide-tipped orifice. By rotating the handwheel or hydraulic actuator, the operator positions the needle relative to the seat, varying the effective flow area. This allows continuous adjustment of the choke flow coefficient from fully closed to full-bore open, enabling real-time optimization of flow rates and wellhead back pressure.

Upstream and downstream of each choke, DEENPU plug valves provide positive isolation and bypass capability. During normal operation, these valves allow flow to be directed through or around the choke path. During maintenance, the isolation valves enable safe isolation of individual chokes for servicing or tip replacement without shutting down the entire operation. This redundant valve architecture ensures maximum uptime and operational flexibility.

Key Features

Solid Carbide-Tip Choke

Replaceable solid carbide orifice tip delivers exceptional erosion resistance in abrasive flow conditions. The carbide insert withstands high-velocity sand slurry, proppant, and corrosive fluids far longer than conventional hardened steel chokes, dramatically extending service life.

Field-Serviceable Design

The carbide tip can be replaced on location using standard hand tools, eliminating the need for complete choke assembly replacement or workshop-level maintenance. This reduces spares inventory and gets you back to operation faster.

DEENPU Plug Valve Integration

Each manifold incorporates DEENPU high-performance plug valves for upstream and downstream isolation. These full-bore valves provide unrestricted flow, positive shutoff, and reliable operation in the most demanding well service environments.

NACE Sour Service Ready

Available in NACE MR0175 compliant configurations for H2S sour gas environments. All pressure-containing components meet NACE hardness requirements, and sour service valves feature H2S-resistant elastomers and compliant materials of construction.

Pressure Ratings

NACE sour service manifolds are rated at 10,000 PSI (69 MPa), while standard non-NACE configurations are rated at 15,000 PSI (103.4 MPa). Both pressure classes are fully tested and certified for well service duty.

Custom Configurations

DEENPU manifolds can be configured with any combination of plug valves, chokes, and header layouts to match your specific wellsite requirements. Single or dual choke paths, multiple bypass lines, and custom skid dimensions are all available.

Standard Configurations

DEENPU offers the following standard adjustable choke manifold configurations. All can be customized to meet your specific operational requirements.

DEENPU 3″ Adjustable Choke 9-Valve Manifold (DN-FFM-3AA209)

A robust 3″ manifold designed for high-rate flowback and well testing operations. Features dual adjustable chokes for parallel or staged flow control, with a comprehensive valve arrangement for maximum operational flexibility.

Item	Quantity	Description
1	2	3″ 1502 Adjustable Choke (Target Tapped)
2	2	3″ 1502 Spacer (14.10″)
3	2	3″ 1502 TEE (F x M x M)
4	9	3″ 1502 Plug Valve
5	1	3″ 1502 Inlet Cross (F x M x M x M)
6	1	3″ 1502 Outlet Cross (M x F x F x F)
7	2	3″ 1502 Female Blanking Cap

DEENPU 2″ Adjustable Choke 5-Valve Manifold (DN-FFM-2AA005)

A compact 2″ manifold ideal for coiled tubing, well testing, and lower-rate well service applications. Dual chokes provide primary and secondary flow control, with integrated bypass capability.

Item	Quantity	Description
1	2	2″ 1502 Adjustable Choke Assembly
2	2	2″ 1502 M x F Spacer (9.19″)
3	5	2″ 1502 Plug Valve
4	1	2″ 1502 Inlet Cross (F x M x M x M)
5	2	2″ 1502 F x M x M TEE Body (L & R Tapped)
6	1	2″ 1502 Outlet Cross (M x F x F x F)
7	2	2″ Female Blanking Cap

DEENPU 2″ Adjustable Choke 10-Valve Manifold (DN-FFM-2AA010)

An expanded 2″ manifold with enhanced valve count for complex well service operations requiring multiple flow paths, extensive bypass options, and staged choke control for pressure management.

Item	Quantity	Description
1	2	2″ 1502 Adjustable Choke Assembly
2	2	2″ 1502 Plug Valve
3	8	2″ 1502 Plug Valve (additional flow control)
4	1	2″ 1502 Inlet Cross
5	1	2″ 1502 Outlet Cross
6	4	2″ 1502 TEE / Spacer (various lengths)

Spacer Options for 2″ Manifolds

DEENPU 2″ adjustable choke manifolds can be configured with the following spacer options to accommodate different choke spacing and layout requirements:

Option 1: 2 x 2″ 1502 Spacer (22.73″) – Standard spacing for dual choke alignment
Option 2: 2 x 2″ 1502 NPST Pipe (22.73″) – Threaded pipe spacing for compact layouts
Option 3: 2 x 2″ 1502 Spacer (9.19″) + 2 x 2″ 1502 Spacer (13.88″) – Staggered spacing for custom valve arrangements

Applications

DEENPU Adjustable Choke Manifolds are trusted across the full spectrum of well service and production operations:

Hydraulic Fracturing

Flowback Operations

Well Testing

Coiled Tubing

Well Cleanout

Production Choke

Well Stimulation

Blowout Prevention

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″ (50.8 mm) / 3″ (76.2 mm)	2″ (50.8 mm) / 3″ (76.2 mm)
End Connection	1502 Hammer Union	1502 Hammer Union
Choke Type	Adjustable with carbide tip	Adjustable with carbide tip
Valve Type	DEENPU Plug Valve	DEENPU NACE Plug Valve
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)
Skid Frame	Steel with lifting lugs	Steel with lifting lugs

Custom Configurations

All standard manifold layouts can be modified to suit your specific requirements. DEENPU engineering team can design custom configurations with:

Additional or reduced valve count
Single or multiple choke paths
Custom header routing and spacing
Integration of hydraulic or gear-operated plug valves
Additional instrumentation ports, pressure gauges, and temperature monitoring
Custom skid dimensions, anchoring systems, and weather enclosures

Adjustable Choke Technology

Carbide Tip Replaceability

The solid carbide orifice tip is the wear-critical component in abrasive flow service. By making the tip replaceable with standard hand tools, DEENPU eliminates the need for complete choke replacement, reducing spares cost by up to 70% and allowing field-level maintenance without workshop support.

Precision Flow Control

The needle-and-seat design provides a variable orifice geometry that delivers smooth, predictable flow curves across the full adjustment range. Operators can fine-tune flow rates to maintain target wellhead pressures and optimize production without abrupt flow changes.

Orifice Size Options

DEENPU adjustable chokes are available with a range of orifice sizes to match your flow rate and pressure drop requirements. Consult our engineering team to select the optimal orifice size for your application parameters.

Ordering Guide

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

Manifold Size & Pressure

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

Service Condition

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

Configuration & Quantity

Preferred valve count and choke configuration (refer to standard models DN-FFM-3AA209, DN-FFM-2AA005, DN-FFM-2AA010), or specify custom layout requirements. Indicate desired quantity and delivery schedule.

Custom Manufacturing

Beyond standard configurations, DEENPU offers fully customized choke manifold solutions engineered to your specific operational requirements:

Custom Header Layouts

Any pipe routing, header configuration, or valve arrangement can be designed to match your existing wellsite equipment footprint and connection requirements.

Instrumentation Integration

Manifolds can be fitted with pressure transducers, temperature sensors, flow meters, and remote monitoring interfaces for integration with your digital wellsite platform.

Weather & Environmental Protection

Available with weather enclosures, heat tracing, insulation, and Arctic-rated materials for extreme cold environments. High-temperature configurations for thermal and steam applications are also available.

Quality Control & Testing

DEENPU maintains ISO 9001:2015 certified quality management systems. Every adjustable choke manifold 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 using calibrated CMM equipment.

Pressure Testing

Individual valve and choke pressure testing at 1.5x rated working pressure. Completed manifold assembly tested at rated working pressure for shell integrity and seat leakage. Nitrogen gas test for bubble-tight seal verification.

Functional & Operational Verification

All plug valves cycled through full open-to-close sequence. Adjustable chokes operated through full stroke range to verify smooth operation. Manifold tested with simulated flow conditions to verify correct valve sequencing and pressure distribution.

Frequently Asked Questions

How long does the carbide tip typically last before replacement? ▼

Carbide tip life depends on flow rate, sand/proppant concentration, pressure differential, and choke opening position. In typical fracturing flowback service with moderate sand content, a carbide tip may last 50-200 operating hours. In clean fluid well testing, tip life can exceed 1,000 hours. The replaceable design means you can monitor erosion and replace the tip when flow control accuracy begins to degrade, rather than waiting for catastrophic failure.

Can I convert a standard manifold to NACE sour service? ▼

No, conversion from standard to NACE service requires replacement of the entire manifold assembly. NACE compliance requires specific material hardness controls, H2S-resistant elastomers, and specialized bolting that cannot be retrofitted to a standard manifold. DEENPU recommends specifying NACE service at the time of order to ensure full compliance. We also offer dual-rated manifolds that can be configured for either standard or NACE service with component swaps.

What tools are needed for field carbide tip replacement? ▼

Carbide tip replacement requires only standard hand tools: a wrench set for the choke body bolts, a screwdriver or hex key for the tip retaining mechanism, and a torque wrench for proper reassembly. No special machining, grinding, or welding is needed. The entire tip replacement procedure can be completed in 15-30 minutes by a trained technician. DEENPU provides detailed maintenance procedures and can offer on-site training for your operations team.

Are spare parts and carbide tips readily available? ▼

Yes. DEENPU maintains a comprehensive inventory of genuine OEM spare parts including carbide tip kits, seal kits, seat assemblies, plug valve internals, and complete choke assemblies. Most standard spare parts ship within 24 hours. We strongly recommend stocking critical spare carbide tip kits and seal kits at the wellsite for high-utilization operations to minimize downtime.

What certifications come with the manifold? ▼

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 manifold configuration? ▼

Standard manifold configurations (DN-FFM-3AA209, DN-FFM-2AA005, DN-FFM-2AA010) 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 Adjustable Choke Manifolds

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

EMAIL

SALES@DEENPU-MACHINERY.COM

+86-15806284962