ZJS Type Jar Extensifler

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Specifications

ZJS type jar extensifier is a downhole fishing jar designed to increase jaring force to up jar. Therefore ,it must be run in conjunction with CSJ type super or YSJ type hydraulic up jar. It is to supply acceleration to the uper end of the jar during the free jarring stroke.

Type Parameter	ZSJ114B	ZYSJ121B	ZSJ146B	ZSJ159B	ZSJ178B	ZSJ178B
O.D. (mm)	114	121	146	159	178	203
I.D. (mm)	38	38	51	57	57	71
Overlength after pull	3340	3340	4000	4500	4000	4010
Stroke(mm)	250	250	330	330	310	330
Tensile load (KN),downhole	800	900	1200	1500	1800	2200
Max.work torque	4.9	7.8	15		19.6	23..5
Threads API	NC31	NC38	NC40	Nc50	NC50	65/8”REG
Sealing pressure	20	20	20		20	20

Service Process

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Service Guarantee

Free Service Charge

ECVV doesn't charge any service fee to Buyers for buying this product.
ECVV Supply

ECVV is responsible for supply, and provides product quality inspection, fund supervision and supply chain services.
Product Quality Commitment

ECVV China Sourcing Agent will assess the reputation and supply ability of the factory and conduct field trips to select the high-quality Chinese factories for buyers.
Deposit Service Commitments

In order to improve the quality of service, ECVV will charge for a 100CNY deposit for the agent purchasing order, and the deposit will be part of subsequent purchasing costs.

After paying a deposit, if the purchasing order is not completed because of unsatisfied ECVV services, ECVV will refund your deposit.