1. Do not tighten or loosen any part of a fitting or valve when the system is pressurized. Make sure the system is un-pressurized when tightening or loosening a
fitting or valve connection.
2. Do not loosen GYROLOK
®
nut or any product component in order to relieve or bleed down system pressure.
3. Do not exceed pressure-temperature specifications stated in the appropriate catalog.
4. When the application involves use of a toxic or hazardous fluid, exercise extra caution during operation and maintenance.
5. Before assembling new, unused GYROLOK
®
tube fitting ends, loosen the GYROLOK
®
nut before inserting the tube to allow full insertion of the tube to the
base of the body bore.
6. Always use tubing that is compatible with the fitting or valve material. Tubing appropriate for use with HOKE
®
products is described in Tubing Data Charts.
For example, use 316 Stainless Steel fittings with 316 Stainless Steel tubing.
7. Always leave a length of straight tube between the tube bend and the fitting. A tube bent too close to the fitting connection may be a source of leakage.
8. During assembly of the GYROLOK
®
tube end, always hold the fitting or valve body with one wrench while separately wrench tightening the GYROLOK
®
nut.
Follow the same precaution when disassembling.
9. Always use a HOKE
®
tube insert (basic part number “TI”) when assembling a GYROLOK
®
fitting to soft, pilable plastic tubing.
10. Always use proper thread lubricants or sealants on tapered pipe threads. Note that thread sealants may have lower temperature ratings than the basic fitting.
11. When installing an NPT ended valve, hold the valve body near the connection with one wrench, while separately wrench tightening the mating pipe. Turn the
pipe, not the valve. Follow the same precaution when disconnecting.
12. Do not hold the valve handle when tightening an end connection.
13. Do not use excessive force to open or close a ball valve e.g. do not use a handle extension.
14. On initial installation, valves may require an adjustment of the packing nut due to storage variations, systems parameters, and cold flow properties of TFE.
PO Box 4866 • Spartanburg, SC 29305-4866 USA • 864.574.7966
www.HOKE.com
Safety Instructions
It is solely the responsibility of the system designer and user to select products suitable for their specific application requirements and to ensure
proper installation, operation and maintenance of these products. Material compatibility, product ratings, and application details should be considered
in the selection.
Always contact your local HOKE
®
Distributor with any questions you may have before pressurizing and operating the product.
Product information described herein is offered for use by the system designer and user.
!
WARNING
Improper selection or use of products described herein can cause
Personal injury or property damage
We Care About Your Safety
!
59-650 • 11/18/15 • APS5857
PLUGS & PORT CONNECTORS
TUBE ADAPTERS & REDUCERS
Remove and discard ferrules. Firmly insert
the plug or port connector into the end
connection and hand-tighten the nut.
While supporting the fitting body, tighten
the nut with a wrench ¼ turn.
For this type of fitting please
follow the Manual Assembly
Instructions.
SAFETY WARNING:
GYROLOK
®
products are designed for installation only by professional suitably qualified licensed system installers experienced in the applications and
environments for which the products are intended. These products are intended for integration into a system. Where these products are to be used
with flammable or hazardous media, precautions must be taken by the system designer and installer to ensure the safety of persons and property.
Flammable or hazardous media pose risks associated with fire or explosion, as well as burning, poisoning or other injury or death to persons and/
or destruction of property. The system designer and installer must provide for the capture and control of such substances from any vents in the
product(s). The system installer must not permit any leakage or uncontrolled escape of hazardous or flammable substances. The system operator
must be trained to follow appropriate precautions and must inspect and maintain the system and its components including the product(s) and at
regular intervals in accordance with timescales recommended by the supplier to prevent unacceptable wear or failure.
