MKS Instruments 100991588 Pneumatic Right Angle Valve Working Surplus. This MKS Instruments 100991588 Pneumatic Right Angle Valve is used working surplus. Only items pictured are included: If a part is not pictured, or mentioned above, then it is not included in the sale. Pictured test equipment is not included or available for sale.For items with multiple quantities: The pictured item is not necessarily the one that will be sent. Serial numbers or country of manufacture may vary. This item is in the category "Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Vacuum Pumps\Other Vacuum Pumps". The seller is "usedeqsales" and is located in this country: US. This item can be shipped worldwide.