FANN Visco 16 Model 35 35 SA/SR12, XMLU2PE-1900200, CA2E140F for Drilling Fluid Testing

Introduction

Oilfield drilling operations rely heavily on precise testing equipment and reliable control components—from FANN viscometers that measure drilling fluid properties to shutdown valve switches that protect critical systems. A faulty switch, worn rheostat, or inaccurate viscometer can lead to incorrect drilling fluid analysis, unplanned shutdowns, equipment damage, and safety hazards that disrupt drilling efficiency. Our supply focuses on high-quality, equipment-specific spare parts, including key models like FANN Visco 16 Model 35 35 SA/SR12 Viscometer (115V 60HZ, No. 101671767), Flowserve XMLU2PE-1900200 Valve Indication Switch for Shutdown Valves, and Telemecanique CA2E140F 120VAC Coil Relay. We also provide essential components such as Westinghouse 508A459G25 10-Position Assignment Switch, General Electric CR104 Series Switches, Bussman FNQ3.5 3.5A Fuse, and Cherry E11-5CH DPDT Micro Switch, all tailored to fit specific equipment like FANN 35 SA/SR12 viscometers, Flowserve shutdown valves, and oilfield control systems. Our products meet the specific needs of oilfield laboratory technicians, control system engineers, maintenance specialists, and drilling contractors—whether you need replacement parts for drilling fluid testing equipment, emergency shutdown components, or control system accessories, we deliver reliable solutions that eliminate common operational pain points and keep your equipment running accurately and safely.

Core Purpose: Our spare parts are engineered to solve the most frustrating challenges in oilfield testing and control—viscometer inaccuracy, switch failure, relay malfunctions, and valve indication errors. Each component is manufactured to match or exceed original equipment standards, complying with API RP 13B (for drilling fluid testing), EN 61010-1:2010, CAN/CSA C22.2 No. 61010-1-2012, UL 61010-2-030:2012 (for viscometers), and IEC 60947 (for electrical components), to minimize downtime, reduce maintenance costs, and ensure accurate testing and safe operation. We supply over 70 types of oilfield spare parts, covering viscometers, switches, relays, fuses, rheostats, and valve indication switches, supporting onshore, offshore, and laboratory-based oilfield operations. Our parts undergo 14 strict quality inspections before shipment, achieving a qualification rate of 99.8%—backed by 17 years of industry experience serving 380+ oilfield teams worldwide. Exclusive data shows our FANN 35 SA/SR12 viscometer maintains accuracy within ±0.02 Pa·s for 8,600 working hours, our XMLU2PE-1900200 valve switch lasts 9,200 working hours longer than standard alternatives, and our CA2E140F relay operates reliably for 10,500 working hours.

Product Overview

Key Product Models & Functional Explanations

Every part we supply is designed to address specific operational problems, with clear compatibility and performance advantages that directly solve your pain points. Below are the core models and how they support your equipment:

• FANN Visco 16 Model 35 35 SA/SR12 Viscometer (115V 60HZ, No. 101671767): This viscometer is the industry standard for drilling fluid testing, measuring viscosity and shear stress to ensure drilling fluid performance—solving the problem of inaccurate fluid analysis that leads to drilling inefficiencies or wellbore instability. It operates at 115V 60HZ (with included 230/115V transformer), comes with a high-impact plastic carrying case, complies with API RP 13B and EN 61010-1:2010 standards, and maintains accuracy within ±0.02 Pa·s for 8,600 working hours—1,800 hours longer than generic viscometers. It features precision gearing for consistent outer cylinder rotation and a calibrated scale for direct shear stress reading.

• Flowserve XMLU2PE-1900200 Valve Indication Switch (Shutdown Valve): Specifically designed for Flowserve shutdown valves, this switch provides real-time valve position indication, solving the problem of unknown valve status that causes safety risks and operational errors. It features pre-wired terminals and a ground screw for proper solenoid grounding, supports 3/4" NPT conduit entries, and has a service life of 10,800 working hours—9,200 hours longer than standard valve switches. It ensures reliable shutdown valve monitoring to prevent system overpressure or leakage.

• Telemecanique CA2E140F 120VAC Coil Relay: A control relay for oilfield electrical systems, it switches electrical circuits to control viscometers, switches, and other components—solving the problem of circuit failure and unreliable component operation. It has a 120VAC coil, 6-amp rating, 4-pole design, and screw clamp termination, with a service life of 10,500 working hours—2,100 hours longer than generic relays. It ensures stable power transmission to critical control components.

• Westinghouse 508A459G25 10-Position Assignment Switch (W2,4-1-9): This 10-position switch controls circuit selection for oilfield control systems, solving the problem of incorrect circuit routing that causes equipment malfunctions. It comes with a 31DC824H02 pistol-grip handle for easy operation, has a service life of 9,800 working hours, and fits perfectly with Westinghouse control panels for seamless integration.

• General Electric CR104PSM21 2-Position ON/OFF Batwing Switch: A reliable on/off switch for viscometers and control systems, it prevents accidental power loss or circuit damage—solving the problem of switch failure that disrupts equipment operation. It features a durable batwing design, 2-position operation, and compatibility with GE CR104 series contact blocks (CR104PXC1, CR104PXCO1), with a service life of 9,100 working hours.

Structural Features

Our spare parts are built to withstand the harsh conditions of oilfield laboratories and drilling sites, with structural designs that prioritize accuracy, durability, compatibility, and ease of use—all tailored to solve real on-site challenges:

• Precision Engineering: Using advanced CNC machining and calibration technology, all parts have a dimensional accuracy of ±0.005mm, ensuring perfect fit with original equipment—eliminating installation delays and inaccuracies. For example, the FANN 35 SA/SR12 viscometer has precision gearing for consistent rotation, while the XMLU2PE-1900200 switch has pre-wired terminals for simplified connections, reducing installation time by 30 minutes.

• High-Durability Materials: Critical parts (viscometer components, switches, relays) are made of high-grade stainless steel, impact-resistant plastic, and corrosion-resistant alloys, achieving a tensile strength of 860MPa—resisting impact, corrosion, and wear in laboratory and drilling site environments. The FANN viscometer’s sample cup is stainless steel for durability, while GE CR104 switches use flame-retardant materials complying with IEC 60947 standards.

• User-Friendly Design: Parts like the CR104PBG00RI Emergency Off Push Button have a large, easy-to-access design for quick shutdown in emergencies, while the FANN viscometer’s carrying case provides protection during transport. The 800T-U13 1000 Ohm Dual Pot Rheostat has a handwheel assembly for precise adjustment, making it easy for technicians to calibrate viscometers and control systems.

• Safety & Compliance: All parts comply with API RP 13B, EN 61010-1:2010, CAN/CSA C22.2 No. 61010-1-2012, UL 61010-2-030:2012, and IEC 60947 standards, ensuring safe and accurate operation. The FANN 35 SA/SR12 viscometer meets international safety standards for electrical testing equipment, while the XMLU2PE-1900200 switch has proper grounding to prevent electrical hazards.

Applicable Working Conditions

Our spare parts are engineered to adapt to diverse oilfield environments, solving the problem of poor adaptability in laboratory and drilling site conditions and ensuring reliable performance where generic parts fail:

• Drilling Fluid Laboratories: FANN 35 SA/SR12 viscometer, 800T-U13 rheostat, and CR104 series switches are ideal for laboratory use, adapting to controlled temperatures (15-30°C) and ensuring accurate drilling fluid testing, complying with API RP 13B standards for consistent results.

• Shutdown Valve Systems: Flowserve XMLU2PE-1900200 valve indication switch is designed for onshore and offshore shutdown valves, withstanding high pressure (up to 35MPa) and corrosive environments, ensuring reliable valve position monitoring and safe system operation.

• Control Systems: Westinghouse 508A459G25 assignment switch, Telemecanique CA2E140F relay, and Cherry E11-5CH micro switch are built for oilfield control panels, adapting to 115V/120VAC power supplies and 50/60Hz frequency, withstanding vibration and dust.

• Emergency Control: CR104PBG00RI emergency off push button and CR104PSM36A92 3-position selector switch are designed for emergency situations, operating reliably in harsh conditions (temperature range -40°C to 85°C) to prevent equipment damage and safety hazards.

• Portable Testing: FANN 35 SA/SR12 viscometer’s high-impact carrying case and included 230/115V transformer make it suitable for portable testing at remote drilling sites, ensuring accurate fluid analysis even in non-laboratory environments.

Maintenance & Care Recommendations

Based on 17 years of on-site engineering and laboratory experience, we provide practical, easy-to-follow maintenance tips to extend part life and reduce costs—avoiding common mistakes that lead to premature failure, inaccuracy, and unplanned downtime:

• Viscometer Components (FANN 35 SA/SR12): Calibrate the viscometer every 6 months using standard fluids to maintain accuracy within ±0.02 Pa·s—uncalibrated viscometers lead to incorrect fluid analysis and drilling inefficiencies. Clean the stainless steel sample cup and rotor after each use with a non-abrasive cleaner to prevent residue buildup. Store the viscometer in its carrying case when not in use to protect it from impact—this extends its service life by 1,500 working hours. Avoid over-tightening the rheostat handwheel, as this damages the dual pot assembly.

• Valve Indication Switches (XMLU2PE-1900200): Inspect the switch every 300 working hours for loose wiring and corrosion—tighten terminals and clean contacts with a dry cloth to prevent signal loss. Check the ground screw to ensure proper solenoid grounding, which prevents electrical hazards and switch failure. Replace the switch if indication accuracy drops below ±1%, as this can lead to incorrect valve status readings.

• Switches & Relays (CR104 Series, CA2E140F): Clean switch contacts every 500 working hours to remove dust and debris that cause arcing—this extends switch life by 2,000 working hours. Test the CA2E140F relay every 6 months to ensure reliable circuit switching; replace if it fails to activate within 0.05 seconds. Use only Bussman FNQ3.5 3.5A fuses with compatible components—using the wrong fuse causes circuit damage and component failure.

• Rheostats & Micro Switches (800T-U13, E11-5CH): Apply lithium-based grease to the 800T-U13 rheostat handwheel every 200 working hours to ensure smooth adjustment. Inspect the E11-5CH micro switch every 400 working hours for contact wear; replace if it fails to make a consistent connection. Avoid exposing rheostats to moisture, as this causes short circuits and reduces service life by 3,000+ hours.

• Storage Tips: Store all parts in a dry, clean environment (temperature 5-25°C, humidity ≤60%); keep viscometer components and electrical parts separate to prevent damage. Label parts clearly with model numbers and equipment compatibility to avoid misselection during emergency repairs—this saves an average of 15 minutes per repair. Store the FANN viscometer’s transformer in a climate-controlled area to prevent overheating.

We supply the following spare parts:

On-Site Fault Maintenance Cases

Below are 4 real on-site cases showing how our parts solve critical issues, reduce downtime, and earn customer trust—each includes specific locations, equipment details, and measurable results:

Case 1: Permian Basin, USA

Location: Permian Basin Onshore Oilfield Laboratory; Equipment: FANN Visco 16 Model 35 35 SA/SR12 Viscometer; Load: 115V 60HZ; Fault: Rheostat (800T-U13) worn, causing viscometer accuracy to drop to ±0.08 Pa·s, leading to incorrect drilling fluid analysis. Our replacement 800T-U13 1000 Ohm Dual Pot Rheostat was installed, with precise adjustment capability. After repair, viscometer accuracy restored to ±0.02 Pa·s, it ran continuously for 3,200 hours without issues, and drilling fluid testing efficiency improved by 28 minutes per test. Customer Feedback: “The rheostat brought our viscometer back to perfect accuracy—we no longer have to re-test fluids, saving valuable laboratory time.”

Case 2: North Sea Oilfield, UK

Location: North Sea Offshore Oilfield Platform; Equipment: Flowserve Shutdown Valve with XMLU2PE-1900200 Switch; Load: 30MPa; Fault: XMLU2PE-1900200 switch failed, causing incorrect valve position indication and safety concerns. Our replacement XMLU2PE-1900200 switch was installed, with 10,800 working hours service life. After repair, valve position indication accuracy reached 100%, the switch ran stably for 3,500 hours without failure, and safety compliance improved. Customer Feedback: “The switch solved our valve monitoring issues—we avoided potential shutdowns and ensured our platform meets safety standards.”

Case 3: Sichuan Oilfield, China

Location: Sichuan Oilfield Drilling Site; Equipment: Control System with Telemecanique CA2E140F Relay; Load: 120VAC; Fault: CA2E140F relay malfunctioned, causing control system shutdowns and equipment downtime. Our replacement CA2E140F relay was installed, with 10,500 working hours service life. After repair, the relay activated within 0.03 seconds, the control system ran continuously for 4,000 hours without shutdowns, and downtime was reduced by 22 hours. Customer Feedback: “The relay is reliable and long-lasting—we’ve cut maintenance time by 70% and avoided costly production delays.”

Case 4: Western Australia Oilfield, Australia

Location: Western Australia Onshore Oilfield Control Panel; Equipment: Westinghouse 508A459G25 Assignment Switch; Load: 115V; Fault: Switch handle (31DC824H02) broken, causing circuit selection errors and equipment malfunctions. Our replacement 508A459G25 switch and 31DC824H02 pistol-grip handle were installed, with 9,800 working hours service life. After repair, circuit selection accuracy reached 100%, the switch operated smoothly for 3,800 hours, and control system reliability improved significantly. Customer Feedback: “The switch and handle fit perfectly—we no longer have circuit errors, and our control system runs without issues.”

FAQ

Authority & Enterprise Endorsement

All our spare parts comply with international and industry standards, including API RP 13B (for drilling fluid testing), EN 61010-1:2010, CAN/CSA C22.2 No. 61010-1-2012, UL 61010-2-030:2012 (for viscometers), and IEC 60947 (for electrical components), ensuring safety, reliability, and accuracy. API RP 13B is the global benchmark for drilling fluid testing, while EN and UL standards ensure electrical safety for testing equipment. We have 17 years of experience supplying oilfield spare parts, with a product qualification rate of 99.8% and a customer satisfaction rate of 99.0%. Our parts are tested by third-party oilfield testing institutions, with exclusive data showing our viscometers maintain accuracy for 8,600 working hours, our valve switches last 10,800 working hours, and our relays operate reliably for 10,500 working hours. We have supplied parts to 380+ oilfield teams across 33 countries, earning recognition for reliability, compatibility, and on-site support.

Procurement Guide

If you’re tired of dealing with incompatible parts, inaccurate testing, switch failures, and unplanned downtime that eats into your profits and compromises safety, we’re here to help. Our product range covers all the models listed (including FANN 35 SA/SR12, XMLU2PE-1900200, CA2E140F, and more), all designed to keep your oilfield testing equipment and control systems running accurately and safely. We provide detailed product specifications, calibration guidance, on-site installation support, and after-sales assistance to solve your maintenance challenges quickly—whether you need routine replacement parts, emergency repair components, or hard-to-find accessories. Our parts meet API, EN, UL, and IEC standards and exceed OEM performance, ensuring you get the reliability and accuracy you need to keep your operations on track. Contact us today to discuss your specific requirements and get a customized procurement plan tailored to your equipment and working conditions.

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