Description
Weco Plug Valves
ULT Series | 15,000 – 20,000 PSI CWP | 1″ – 4″ | Standard & Sour Service | Weco Hammer Union
Product Overview
CAMTOP Weco Plug Valves deliver exceptional performance in high-pressure well service applications. Engineered for the most demanding oilfield environments, our ULT series plug valves handle pressures up to 20,000 PSI and are available in sizes from 1″ to 4″ with Weco hammer union end connections. The proprietary two-piece floating plug/stem design (3″ and larger) and dual-seal segment configuration provide superior sealability, extended body life, and resistance to erosive fluids including sand, proppant, and cement. Both Standard and Sour Gas (H₂S) service configurations are available, with low-temperature (–40°C) options for arctic environments.
Product Image
Figure 1. CAMTOP Weco ULT Series Plug Valve — Handwheel operated, red painted finish, Weco hammer union connections
Key Features
- Two-piece floating plug/stem design: Proprietary floating plug and stem uniformly distribute load against the downstream seat to improve sealability and reduce plug wear (3″ and larger models).
- Fast, simple field repair: Bottom entry design provides access to all valve internals without having to remove the operator or actuator, minimizing downtime.
- Eliminates body washout, extends body life: Dual seals direct flow between the seal segment and plug to provide long, trouble-free service life.
- Handles sand, proppant, and cement: Linear wave springs prevent small particles from entering the metal-to-metal seal area, enabling use in a broad range of abrasive applications.
- Interchangeable design: Internal components of 1″ size interchange with Weco DR valve components, potentially extending the life of existing valve bodies.
- Eliminates corrosion in segment sealing area: Dual segment seals greatly reduce erosive fluid flow between the seal segments and the plug valve body to improve sealing capabilities and extend service life.
- Fast assembly: Integral stem and plug provide fast, sure assembly without adjustments (below 3″ models).
- High pressure capability: Up to 20,000 PSI cold working pressure (CWP) for demanding high-pressure well service.
- Standard and Sour Gas service: Available in both Standard and H₂S (Sour) service configurations to meet API requirements.
- Low temperature option: Low-temperature (–40°C) equipment available for arctic and cold-climate operations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Weco Plug Valves — ULT Series |
| Pressure Rating | 10,000 / 15,000 / 20,000 PSI CWP |
| Nominal Size | 1″, 1×2″, 2″, 3″, 4″ |
| End Connection | Weco 1502, 2202, 1002, 1505 Hammer Union |
| Service Type | Standard, Sour Gas (H₂S) |
| Operating Method | Manual, Handwheel, Hydraulic Actuator |
| Model Series | ULT 100, ULT 150, DR 100, DR 150, DR 200 |
| Weight Range | 33 – 871 lbs (15 – 395 kg) |
| Recommended Service | Slick water, sand, proppant/gel, energized fluids, inhibited acids, cement |
| Low Temperature | –40°C (LT option available) |
| Design Standard | API 6A / API 16C |
| Material Class | AA, BB, CC, DD, EE, FF |
| Temperature Rating | –29°C to +121°C (Standard); –40°C to +121°C (LT) |
| Seat Seal | Metal-to-metal with dual seal segment |
| Body Material | Alloy Steel (Forged), NACE MR-01-75 compliant |
Detailed part numbers, CWP ratings, and weight data by model and size are shown in the full specifications table below.
Detailed Specifications
Figure 2. Detailed Technical Specifications — Model, size, part number, end connection, service, CWP, and weight
Main Components
| Item | Component Name | Description |
|---|---|---|
| ① | Plug / Stem | Two-piece floating plug and stem (3″ and larger) or integral stem and plug (below 3″). Proprietary design uniformly distributes load against downstream seat. |
| ② | Seal Segment | Dual seal segments direct flow between the segment and plug. Greatly reduce erosive fluid flow and prevent corrosion in sealing area. |
| ③ | Valve Body | Forged alloy steel body with hammer union end connections. Bottom entry design allows access to internals without removing operator. |
| ④ | Operator | Manual, handwheel, or hydraulic actuator options. Linear wave springs prevent small particles from entering metal-to-metal seal area. |
Assembly Drawing
Figure 3. ULT Series Cutaway — ① Plug/Stem, ② Seal Segment, ③ Body, ④ Operator (3″ and larger design shown above; below 3″ design shown below)
Dimensions
Figure 4. Dimensions Table — A through G dimensions (mm) for Manual, Handwheel, and Hydraulic models
Applications
- Slick water fracturing: High-volume, low-viscosity fluid injection in hydraulic fracturing operations.
- Sand and proppant slurry service: Abrasive slurry transfer with linear wave spring protection against particle ingress.
- Energized fluid applications: Nitrogen and CO₂ foam operations requiring high-pressure, low-temperature performance.
- Inhibited acid stimulation: Acidizing and matrix stimulation with corrosion-resistant materials.
- Cementing operations: Primary and remedial cementing with resistance to cement particle abrasion.
- Well testing and workover: Pressure control and flow isolation during well intervention and testing.
Quality Assurance & Testing
- Pressure Testing: Hydrostatic body test to 1.5× CWP and hydrostatic seat test to 1.1× CWP per API 6A.
- Low-Temperature Validation: –40°C impact testing and cryogenic seal verification for LT-rated models.
- Material Traceability: Full mill certification and heat treatment records for all pressure-containing components.
- NACE Compliance: H₂S-resistant materials (NACE MR-01-75) for Sour Gas service configurations.
- Dimensional Inspection: CMM-verified critical dimensions and thread gauge inspection on all end connections.
- Functional Cycling: Minimum 50 open/close cycles at rated pressure before shipment.
Spare Parts & Repair Kits
| Kit Type | Contents | Notes |
|---|---|---|
| Seal Segment Kit | Dual seal segments, O-rings, backup rings | Recommended replacement every 500 cycles or annually |
| Plug & Stem Kit | Floating plug, stem, retaining hardware | For 3″ and larger models; below 3″ uses integral design |
| Wave Spring Kit | Linear wave springs, anti-extrusion rings | Prevents particle ingress into metal-to-metal seal area |
| Operator Kit | Handwheel assembly, seals, bearings, or hydraulic actuator seals | Manual, handwheel, and hydraulic variants available |
| Full Overhaul Kit | Complete set of all internal components including plug, stem, seal segments, springs, and O-rings | For complete valve rebuild after extended service |
Specific part numbers (P/N) and low-temperature (P/N-LT) variants are listed in the detailed specifications table above. Contact factory for exact kit contents and pricing.
Frequently Asked Questions (FAQ)
Q: What is the maximum working pressure of CAMTOP Weco Plug Valves?
A: CAMTOP Weco Plug Valves are rated up to 20,000 PSI cold working pressure (CWP). Specific models such as ULT 200 and select handwheel configurations are rated at 20,000 PSI, while most standard models are rated at 15,000 PSI. Sour service models are typically rated at 10,000 PSI.
Q: What sizes are available?
A: The ULT series is available in nominal sizes from 1″ to 4″, including 1×2″ crossover sizes. Each size is offered in multiple pressure ratings and service configurations.
Q: What end connections are offered?
A: Standard Weco hammer union end connections include 1502, 2202, 1002, and 1505. Other end connections are available upon request; please consult the factory for custom configurations.
Q: What services are supported — Standard or Sour Gas?
A: Both Standard and Sour Gas (H₂S) service configurations are available. Sour service models use NACE MR-01-75 compliant materials and are typically rated at 10,000 PSI. Please specify your service requirements when ordering.
Q: Is low-temperature service available?
A: Yes. Low-temperature (LT) versions rated for –40°C are available. These are designated with the P/N-LT part number suffix and use materials qualified for cryogenic impact performance.
Q: What is the recommended service fluid for these plug valves?
A: The recommended service fluids include slick water, sand, proppant/gel, energized fluids (nitrogen and CO₂), inhibited acids, and cement. The dual-seal segment and linear wave spring design specifically addresses abrasive and corrosive media.
Q: What operating methods are available?
A: Three operating methods are available: Manual (lever operated), Handwheel (for larger sizes and higher torque), and Hydraulic Actuator (for remote or automated operation). 1″, 1×2″, ULT 150, DR 150, and DR 200 models can be furnished with hydraulic actuators.
Q: How does the floating plug design improve sealability?
A: The proprietary two-piece floating plug and stem (3″ and larger) uniformly distributes the sealing load against the downstream seat. This improves sealability, reduces localized plug wear, and extends service life compared to fixed plug designs.
Q: What makes field repair fast and simple?
A: The bottom entry design provides direct access to all valve internals — plug, stem, seal segments, and springs — without having to remove the operator or actuator. This minimizes downtime and eliminates the need for specialized tools.
Q: What is the warranty period?
A: CAMTOP Weco Plug Valves are backed by a 12-month warranty from the date of shipment against defects in materials and workmanship. Extended warranty options are available for bulk and long-term supply agreements.
Why Choose CAMTOP
- API Certified Quality: Full API 6A and API 16C compliance with traceable material certification.
- Factory-Direct Pricing: Eliminate distributor markup with direct manufacturing and global shipping.
- Comprehensive Size Range: 1″ to 4″ sizes with pressure ratings from 10,000 to 20,000 PSI.
- Multi-Service Capability: Standard, Sour Gas, and low-temperature (–40°C) configurations in one product family.
- Field-Proven Design: Two-piece floating plug/stem and dual-seal segment technology proven in high-pressure fracturing and cementing.
- Fast Repair: Bottom entry design allows valve overhaul without removing the operator or actuator.
- Complete Spare Parts: Full range of seal kits, plug/stem kits, and overhaul kits with OEM part numbers.
- Technical Support: Dedicated application engineering team for sizing, selection, and troubleshooting.
Contact Us
Email: sales@cposl.com
Phone: 86-18621723891
Web: www.camtop-oilfieldtools.com
Address: No. 432, Fute North Road, Waigaoqiao Free Trade Zone, Pudong, Shanghai, China 200131
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