When the valve is fully open, there will be a big flow capacity and small pressure loss and there is no deposit in the valve cavity.
The vlave has precise adjustment and reliable position function. 
The flow characteristic is approximate equal percentage and the adjustable range is wide with a largest adjustable ratio of 100:1.

2-PC STAINLESS STEEL BALL VALVES. FULL PORT. 1000 WOG
Thread End: BSPT, NPT, DIN259, DIN2999 etc
Materials: ASTM A351-CF8M (DIN 1.4408) Stainless steel ASTM A351-CF8(DIN 1.4308) Stainless Steel

For chemical and industrial application.
High quality investment casting body and caps.
1/4" - 4" 1000 PSI (PN63) / 450deg. F
15% reinforced glass fibrous Teflon seat
SS316 blow-out proof stem, with adjustable stem packing.
100% tested air-under water at at 100 PSI (6 Bars) open & close position.
OPTIONS: Padlocking device, butterfly & oval handle, 25% glassfibre R-PTFE seats.

Order process:
1. Customer Send order list to telephone +86-577-67379225
I. Valve type, face to face length; II. Connection type; III. Norminal Diameter; IV. Medium type and temperture, Pressure range; V. Material; VI. Actuator

2. After receiving your list, KARFAR will choose Model and give price.
3. Discuss detail request. dlivery time etc
4. Special requests should include in the contract.

We also manufacture as per your request or drawing.
We welcome your comments and inquiries.
company website: http://wzguanlong.en.made-in-china.com 
 
TEL: 0086-577-67379225, 67318107