Z2S16 Hydraulic One Way Pilot Operated Check Valve

Z2S16 Hydraulic One Way Pilot Operated Check Valve

The isolator valve type Z2S is a releasable check valve in sandwich plate design.
It is used for the leakage-free blocking of one or two actuator ports, also in case of longer standstill times.
In direction A① to A② or B① to B②, there is a free flow; in the opposite direction, the flow is blocked.
If, for example, there is a flow through the valve in direction A① to A②, the control spool is moved in the direction of the B side, opens the ball seat valve and then pushes the poppet off its seat. Hydraulic fluid can now flow from B➁ to B➀. In order to allow the ball seat valve to be safely closed, the control spool must be hydraulically unloaded (see circuit example).
Due to the pre-opening, there is a damped decompression of the pressurized liquid. Thus, possible switching shocks are avoided.

Pre-opening
The two-stage set-up with an increased control open ratio means even low pilot pressure can be unloaded securely. ▪
Avoidance of switching shocks due to dampened decompression of the pressure volume on the actuator side.

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1. With 30 years experience of hydraulic components in china.
2. Best manufacturing machinery, quality level, best price, best service.
3. We have very good and comprehensive after-sales service.
4. We have no MOQ for clients and tailor0made to clients request for our huge inventory.

Our Service
Pre-sale service: we provide presales in our first cooperation make clear your situation and give you some advice.
In-sale Service: We will track the production progress and quality, check the exact model and quantity one by one before delivering.
After-sale Service: We will provide a one year free warranty and lifetime maintenance. We will change all questions in 7*24hours if you buy from us.

Packing
Eternal Brand, Neutral or Customer's requires label. 
Neutral carton or same as the Customer's requires, export standard carton.
All cartons should be packed into the pallets more carefully.
All of the productions are inspected carefully one by one by QC before delivery.

Payment term:
T/T 50% as deposit in advance, the balance should be paid before delivery.100% L/C is acceptable.Western Union and PayPal is acceptable.
Transportation: By sea; By air; By truck; By express (DHL,TNT,UPS,FEDEX)
Trading term: FOB,CFR,CIF

FAQ
Question 1: Did you accept products customization? Do they need mould fee?
Answer: Yes, we accept products customization. Need mould fee, because products usually need extra mould cost. 
But we can return the mould fee when order reach a specific quantity.
Question 2: Can we get free samples?
Answer: The sample expense and freight expense will be borne by the buyers, and will be returned in the following orders.
Question 3: How long is normal production period for a 20-foot shipping container?
Answer: Accoring to the current productive capacity, usually need 3-14 days from producing to delivery. (not including customized products)
Question 4: What is the type of payment?
Answer: Usually, you should prepay 50% of the total amount. The balance should be paid before delivery. (We'll send photos of product to you for checking before delivery)
Question 5: How to guarantee the high quality?
Answer: We have testing department to make sure quality of every product, appearance and pressure test are good.