Chemical Resistant PTFE/Monel Instrumentation

-- Steady & Reliable Manufacturer --

Product Overview

Measuring aggressive chemicals requires materials that can withstand severe corrosive attack. Our range of PTFE-lined and Monel-wetted instrumentation is specifically engineered for processes involving hydrochloric acid, sulfuric acid, caustics, and other highly reactive media. By using protective linings (PTFE/Teflon) or nickel-copper alloys (Monel) for all parts exposed to the process, we guarantee exceptional durability, instrument longevity, and safe, compliant operation in the chemical and petrochemical industries.

Key Features

Wetted parts constructed from high-performance corrosion-resistant materials.
Ideal for highly acidic or alkaline media.
Includes gauges and transmitters with chemical seals.

Technical Specification Sheet

Parameter	Detail
Applicable Products	Pressure Gauges, Chemical Seals, Pressure Transmitters
Primary Materials	PTFE-Lined 316L Stainless Steel, Monel 400, Hastelloy C276
Pressure Range	Full vacuum up to 400 bar (Material dependent)
Connection Type	Threaded (with seal), Flange Mount (with seal), or Wafer Type
Temperature Limit	Up to 200∘C (Varies by isolation material)
Output Signal (PT)	4-20 mA with Digital Compensation
Ingress Protection	IP65 or higher for external corrosion resistance

Typical Use Cases

Chlor-Alkali Plants: Measuring chlorine and caustic soda production pressure.
Acid/Base Manufacturing: Monitoring highly concentrated H2SO4, HCl, and HNO3.
Pharmaceutical Reactors: Pressure monitoring during synthesis and crystallization.
Pulp and Paper Mills: Handling bleach and black liquor chemicals.
Mining Leaching Process: Exposure to strong lye and acid solutions.

Competitive Benefits

Extended Service Life: Materials provide resistance far superior to standard stainless steel in corrosive environments.
Minimized Contamination: Ensures the integrity of the chemical process by preventing instrument corrosion and media mixing.
Custom Solutions: Capability to select the optimal corrosion-resistant material (Monel, Hastelloy, Tantalum, or PTFE) based on the specific chemical matrix.
Safety: Reduces the risk of catastrophic instrument failure due to chemical attack.

Payment and Shipping Details

Due to the high cost of specialized alloys, a 40% T/T deposit is required upon order confirmation. Shipping is arranged via secure global carriers, generally using FCA (Free Carrier) or DAP (Delivered at Place). Lead times are longer, typically 4-8 weeks, to account for the procurement and machining of exotic materials and rigorous post-production testing.

Frequently Asked Questions

Q: How do chemical seals protect the gauge?
A: The seal uses a flexible diaphragm (e.g., Monel or PTFE) to isolate the process fluid from the main instrument body. A capillary filled with compatible oil transmits the pressure to the gauge or transmitter.

Q: Which material is best for sulfuric acid?
A: For concentrated sulfuric acid, specialized high-nickel alloys like Hastelloy C276 or the use of Tantalum diaphragms are often the optimal choice for long-term service. PTFE lining is also highly resistant.

Q: Can temperature affect the chemical resistance of the material?
A: Yes, chemical aggressiveness increases with temperature. When specifying, it is critical to provide the maximum operating temperature and concentration to ensure the correct material is selected.

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Chemical Resistant PTFE/Monel Instrumentation Manufacturers

Wuxi Huihua Special Instrumentation Co., Ltd. was established in December 2001, the registered capital is 5 million yuan, the existing staff of more than 50 small and medium-sized joint-stock enterprises.
The company specialises in the production of various types of special instruments, alternative to the localisation of imported instruments.To seismic pressure gauge, seismic electric contact pressure gauge, stainless steel pressure gauge, diaphragm corrosion-resistant pressure gauge, marine pressure gauge and other series as the main products. On the basis of field instruments, we have developed various kinds of pressure transmitters, pressure controllers, digital pressure gauges and so on. There are more than 30 series and 3000 specifications. Products are widely used in petroleum, chemical, paper, metallurgy, mining, chemical fibre, electric power, food, environmental protection, rubber and plastic, hydraulics and many other industries, and more than 2,000 domestic customers to establish a friendly relationship with the national large and medium-sized enterprises to establish a good partnership, won the majority of users praise, and set up a corporate brand image.