What raw materials can Ruitu bromine extraction systems process?

Our bromine extraction systems are designed for seawater, bitter brine, salt lake brine, oilfield water, bromine-bearing industrial wastewater and concentrated brine from desalination plants. The process route is selected only after we review a laboratory analysis of your feed.

Do you supply single machines or complete plants?

Both. We supply individual machines such as salt washers, roller crushers, dryers, vibrating screens, belt conveyors and hot air furnaces, and we also deliver complete turnkey lines under an EPC contract.

What is included in your EPC service?

Water quality testing, site selection support, process design, project launch preparation, equipment manufacturing and procurement, packing and shipping, installation and commissioning, operator training, finished product production guidance, and output buy-back or decommissioning support where agreed.

Can your salt washing equipment produce food-grade salt?

Our salt washing machinery is used for both food-grade and chemical-grade salt. The achievable grade depends on the crude salt composition and the standard that applies in your market, so we design the washing, crushing, drying and screening stages around your target specification.

How do you support overseas installation?

Our engineers can be dispatched to site for installation and commissioning, train your operators, and stay involved until the line produces finished product at the designed daily capacity.

How do I start a project with Ruitu?

Send us your raw material analysis, target daily capacity, product specification and site information by email or phone. Our technicians will prepare a preliminary budget estimate and an economic benefit analysis based on your budget and expected output.

China PTFE-Lined Bottom Discharge Valve Products, Service

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China PTFE-Lined Bottom Discharge Valve Products, Service

Brand: Ruitu Automation

Product origin: China

Equipment Type‌: A dedicated valve for container discharge, with PTFE lining on the valve body and valve core. It has a compact structure and flange connections.

Purpose‌: Used for bottom discharge from tanks, reactors and other equipment, it can achieve complete material emptying and is suitable for discharge scenarios involving strongly corrosive materials.

Advantages‌: The PTFE lining is resistant to strong corrosion and can withstand material corrosion; the structural design enables complete material emptying, reducing residue; the flange connections facilitate connection with containers and ensure stable installation.

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Product Description

Core Overview

The PTFE-lined bottom discharge valve, also known as a tank bottom valve, is specifically engineered for the safe and efficient drainage of corrosive, abrasive, or high-purity media from reactors, storage tanks, and vessels. Constructed with a robust carbon steel or stainless steel body fully lined with virgin Polytetrafluoroethylene (PTFE), it provides an impermeable barrier against aggressive chemicals such as strong acids, alkalis, and organic solvents. The valve features a streamlined flow path with minimal dead space, ensuring complete drainage and preventing material accumulation or contamination. It is widely used in the chemical, pharmaceutical, food processing, and pesticide industries where hygiene, corrosion resistance, and reliable shut-off are critical.

Specifications & Dimensions

Technical Parameters

Parameter	Specification
Body Material	WCB Carbon Steel, CF8/CF8M Stainless Steel
Lining Material	Virgin PTFE (Polytetrafluoroethylene)
Disc/Seat Material	PTFE, Reinforced PTFE
Nominal Diameter (DN)	DN25 – DN300
Pressure Rating	PN1.0, PN1.6, PN2.5 MPa
Temperature Range	-20°C to +180°C
Operation Mode	Manual (Handwheel/Gearbox), Pneumatic, Electric
Connection Type	Flange (ANSI, DIN, JIS, GB), Clamp (Sanitary)
Leakage Class	ANSI/FCI 70-2 Class VI (Bubble-tight)
Flow Direction	Unidirectional (Top to Bottom)

Dimensional Data Table

Nominal Size (DN)	Length (L) mm	Height (H) mm	Width (W) mm	Flange Diameter (D) mm	Weight (kg)
DN25	160	280	140	115	12.0
DN32	180	310	160	140	16.0
DN40	200	340	180	150	20.0
DN50	230	380	200	165	25.0
DN65	290	430	240	185	32.0
DN80	310	480	280	200	40.0
DN100	350	550	320	220	52.0
DN125	400	620	360	250	68.0
DN150	450	700	400	285	85.0
DN200	550	850	480	340	120.0
DN250	650	1000	560	395	160.0
DN300	750	1150	640	445	210.0

Core Advantages

Zero Dead Space Design

Streamlined cavity ensures complete drainage, preventing material buildup, bacterial growth, and cross-contamination.

Superior Corrosion Resistance

Full PTFE lining withstands harsh chemicals, extending service life and reducing maintenance costs in aggressive environments.

Bubble-Tight Sealing

Precision-machined PTFE seat and disc provide reliable shut-off, ensuring zero leakage and process safety.

Easy Cleaning & Maintenance

Non-stick PTFE surface facilitates easy cleaning (CIP/SIP compatible), minimizing downtime and labor requirements.

Versatile Actuation Options

Compatible with manual, pneumatic, and electric actuators, allowing seamless integration into automated control systems for remote operation.

Frequently Asked Questions (FAQ)

What media types are PTFE-lined bottom discharge valves ideal for?

They are designed to handle highly corrosive, abrasive, and high-purity media, including concentrated strong acids (such as sulfuric, hydrochloric, and nitric acids), strong alkalis, and aggressive organic solvents.

How does the zero dead space feature enhance process safety?

The contoured, zero dead space internal cavity eliminates stagnant pockets where materials can settle or crystallize. This ensures complete vessel drainage, prevents bacterial growth, and eliminates batch-to-batch cross-contamination.

What are the maximum pressure and temperature limits for this valve?

The standard operating temperature ranges from -20°C up to +180°C, and pressure ratings are available across PN1.0, PN1.6, and PN2.5 MPa configurations depending on specific engineering specifications.

Can this valve be integrated into automated process lines?

Yes, the valve can be equipped with pneumatic or electric actuators in addition to standard manual handwheels or gearboxes, supporting remote feedback and seamless DCS/PLC system integration.

What sealing standard is met to prevent hazardous leakage?

The valve incorporates precision-machined PTFE seats and discs that achieve ANSI/FCI 70-2 Class VI bubble-tight shut-off, ensuring completely zero-leakage operation for critical chemical processes.