Jordan Valve Mark 688 Series - Piloted Soft Seat Regulator - Manual (Page 10)

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Torque Procedure
Ordering Spare Parts
Use only genuine Jordan Valve parts to keep your valve
in good working order. So that we can supply the parts,
which were designed for your valve, we must know exactly
which product you are using. Please note the following
information on the valve’s nameplate:
•
Serial Number
• Model and Size
• Body Material and End Connections
• Range
• Diaphragm and Seal Materials
Torque Procedure
1. Install all bolts hand-tight.
2. Torque the bolts in order of the bolt pattern to a
value equal to 1/4 of the recommended torque
value.
3. Retorque each bolt to the recommended value us-
ing the same bolt pattern as shown.
5 3
1
6 4
2
5
3
1
6 4
2
7
8
Torque Chart for Spring Housing Bolts
Elastomer Diaphragm Metal Diaphragm
Bolt Size Torque Bolt Size Torque
5/16 200 in-lbs 5/16 300 in-lbs
3/8 300 in-lbs 3/8 300 in-lbs