188 QFT2000 Mechanical Seals for Pumps Pusher Seals

(1)Features
Quench fluid supply systems are used to
supply single or tandem mechanical seals.
They act as a convenient fluid reservoir.
The exchange of fluid takes place by
the thermosiphon principle or by forced
circulation, e.g. with a pumping screw. The
QFT2000 stainless steel tank is equipped
with sight-glasses for monitoring the MIN/
MAX level and can be fastened with a
lug fixture. The leakage overflow can be
selectively discharged.
Circulation in accordance with API 682/
ISO 21 049: Plan 51, Plan 52

(2)Functional description
Quench fluid systems are employed:
• to absorb leakage
• to monitor the leakage rate (e.g. through periodic reading of the level in the tank)
• to lubricate and to cool the outboard mechanical seal in a tandem arrangement
• to prevent icing
• to protect against dry running
• to stabilize the lubricating film
• to exclude air from the media in order to prevent a reaction with oxygen in the air

(3)Advantages
• Available in a range of different material combinations: suitable for a wide range of demanding operating conditions
• Design for medium temperatures of up to +200 °C (+392 °F)
• Tank made of 1.4571: high resistance to corrosive media
• Integrated overflow for selective discharge of leakage
• Instead of the sight-glass it is possible to use a level switch to monitor the fluid volume
• Combined filling and ventilation filter in the quench fluid tank for reliable operation

(4)Item Description
1 Storage tank (capacity 3 l)
2 Inlet filter with vented cap
3 Sight-glass or level switch
4 Name plate
5 Overflow G1/8"

Connections
A to the mechanical seal
B from the mechanical seal
C filling

(5)Recommended applications
• Chemical industry
• Food and beverage industry
• Pharmaceutical industry

(6)Product variant
Instead of the inspection glass, a level
switch can be used for monitoring the fluid
volume:
MIN level: SPS2000/A051-00
MAX level: SPS2000/A052-00
MIN/MAX level: SPS2000/A053-00

Dead-end quench (Plan 51):
Quench fluid from an elevated tank. The
characteristic feature of this principle is
that no heat is dissipated by the system.

Circulation (Plan 52):
Quench fluid from an elevated tank;
external tank, pressureless; thermosiphon
or forced circulation. In this case heat
is dissipated by the circulation. Cooling
capacity by convection is minimal,
however.

Install the quench fluid tank approx. 1 ... 2 m
(3.3 ... 6.6 ft) above the mechanical seal.
Install connection pipes to the mechanical
seal with low flow resistance. Pipes must
vent automatically in the direction of the
tank. It is imperative that air pockets are
prevented. The minimum filling level must
always be above the connection socket at
the side (in the case of the thermosiphon
principle). Quench fluid systems can be
operated in two different modes.

We have large stock, so our delivery is very fast.
For example,if products are standarded, the delivery time is one week.
Our company and factory addrss: Ningbo City, Zhejiang Province,China.
Our city has a large port and an airport, so its transportation is very convenient.

Question1: What are the prices of your products?
Answer: For each model, the unit price is listed on the website, but what is displayed on the website is only the average market price. For specific models, you can contact us for further consultation and negotiation.

Question 2: Are you a factory or a trade company?
Answer: We are a factory with top sales for the trade service.
Question 3: What is the minimum order quantity for each order?
Answer: For products of regular models, the minimum order quantity is at least five. We welcome you to test the quality of our products and services through placing trial orders. Looking forward to the long-term cooperation with you.

Question4: What is your company's service tenet?
Answer: Quality first, service upmost. We promises that if there is any problem with the quality of the product, or if the product is damaged during the transportation, our company will be responsible for compensation, regardless of the ordder turnover value.

Question5: Can I try to get a SAMPLE before the order?
Answer: Sure. Our company will provide you with samples for free, but you will have to pay for the international delivery (freight collect payment).