Tonglu YoungSun Valve Co. Ltd

Model Number: DN40-DN150-#1901 Brand Name: duoling Key Specifications/Special Features: Control valve for backwash of filter/2 positions/3 ways valveWidely used in automatic backwash disc filtration system, driven by the pressure of pipelines and realize filter’s backwash automaticallySimple-structured, practical, and can run for a long time without maintenanceDiaphragm can change the direction of stream quickly and stablyWhen backwash inlet is open, the water inlet is closed, or vice versaCan avoid overflow of filter or mixing of clean water and waste waterFeatures of valve:1. Water treatment diaphragm valves can be used in sand filters, replacing two sets of electric or pneumatic valves, easy to be controlled2. PA6 (nylon) material, max working pressure is 1.0MPa3. Clamp connection, easy installation and removal
4. Never rust, corrosion resisting, can be used in weak acid environment
5. Good aging resistance, can be used in the open air
6. Switch quickly, good operation stability
7. Easy to replace parts
8. Diaphragm is made of advanced rubber material which has good elasticity, between rubber is the imported high strength net cloth with good rebound performance
9. With the bilateral dovetail waterproof rubber seal ring, it prevents water leakage of operation
10. With the hold hoop on top, it's much safer and is convenient to change the parts inside
11. External uses professional nylon paint treatment, excellent appearance

FAQ:

Shipping ways:

1. By express: DHL, TNT, UPS, FedEx, EMS usuallyfor small or regular and urgent orders
2. By sea transportation for bulk quantity
3. By air transportation
Delivery time:
Shipping times are approximately 5-7 days for sample orders and 7-15 days forregular orders, after payment is done instantly by T/T, WU (weekends notincluded)
If we have any stock for your order, we will shipped out goods immediately on receipt of your payment
Returns:
Situation 1:
If no quality problem, there is no returns or refund. If there's any problem not caused by us, we are pleasure to fix it by sending some spare parts to you, and please bare the shipping cost
Situation 2:
For any quality problem caused by us, we provide refund for returns made within 15 business days of the delivery date
Or we fix it or make new ones for you as requests
Payment terms:
We accept TT payment (bank transfer), L/C, Western Union and cash
Please remember to send us scanned receipt of T/T or other payment copy by Email, this will speed up the processing of your order
Warranty:
All our products have at least 1 year warranty
If there's any quality problems during the warranty period, we ship new spare parts for replacement free for you, or we accept return policy