Page 190 - Parker - Republic/Manatrol (Hydraulic and Pneumatic Control Valves)

Catalog HY14-3000/US Pressure Control Valves
Technical Information Series R6701

General Description
Series R6701 relief valves are pilot operated relief
valves. When system pressure reaches the selected
adjustable setting on this valve, the valve opens the
system to tank.

Features
• Accurate, quick response due to pressure balanced spool
design.
• Available in 1/4" through 3/4" sizes.
• Can be equipped with Tel-lok cap for tamper-proof design
(1/4" - 3/4" sizes only).
• High volume pilot operated relief 340.7 LPM (90 GPM)
1 1/4" and 1 1/2" poppet design available.

E

Specifications Flow Data

Service Hydraulic Oil
Applications
Pressure Range 1: Sizes 1/4" - 3/4"
Adjustment 13.8 - 82.8 Bar (200 - 1200 PSI)
Ranges Sizes 1 1/4" - 1 1/2"
17.3 - 82.8 Bar (200 - 1200 PSI)
Range 2: Sizes 1/4" - 3/4"
69 - 207 Bar (1000 - 3000 PSI)
Sizes 1 1/4" - 1 1/2"
69 - 207 Bar (1000 - 3000 PSI)
Range 3: Sizes 1/4" - 3/4"
207 - 414 Bar (3000 - 6000 PSI)
Sizes 1 1/4" - 1 1/2"
207 - 414 Bar (3000 - 6000 PSI)
Sizes NPT 1/4", 1/2", 3/4"
Ports NPT Pipe threads
Mounting In-line or panel
Material Body, Cap,
Piston Sleeve, Barstock steel
Pilot Cap
Pilot Knob Aluminum
Piston,
Adjustable
Stem, 400 Stainless Steel
Pilot Piston,
Pilot Seat
O-rings Synthetic rubber
Back-up PTFE
Rings
Body Paint
Finish
Operating -40°C to +121°C (-40°F to +250°F)
Temperature

3000-E1.p65, dd
E15 Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA