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Pressure Tech LF691 Piston-Sensed Low-Flow Pressure Regulator With Ceramic Seat

LF691

Low-Flow Hydraulic Pressure Regulator: Liquid / Piston / Ceramic Seat / Non- or Self-Venting / Max. Inlet: 1,380 bar (20,000 psi) / Max. Outlet: 1,380 bar (20,000 psi) / Cv 0.05, 0.1 or 0.3
* Basic Model
LF691
LF691
* Cv Value
0.1 (Max. Inlet 1,034 bar / 15,000 psi - Even with 'R' Body)
0.1 (Max. Inlet 1,034 bar / 15,000 psi - Even with 'R' Body)
0.05
0.3 (Max. Inlet 1,034 bar / 15,000 psi - Even with 'R' Body)
* Body Material
316SS (Max. Inlet 1,034 bar / 15,000 psi)
316SS (Max. Inlet 1,034 bar / 15,000 psi)
17-4 PH SS (Max. Inlet 1,380 bar / 20,000 psi - With Cv 0.3 Only)
* Outlet Range
Up to 50 bar (725 psi)
Up to 50 bar (725 psi)
Up to 100 bar (1,450 psi)
Up to 140 bar (2,030 psi) - Air-Actuated
Up to 200 bar (2,900 psi)
Up to 414 bar (6,000 psi)
Up to 600 bar (8,700 psi) - Air-Actuated
Up to 690 bar (10,000 psi)
Up to 1,034 bar (15,000 psi)
Up to 1,080 bar (15,665 psi)
Up to 1,380 bar (20,000 psi) - Air-Actuated
* O Ring
HNBR
HNBR
NBR
FKM/FPM
* Inlet / Outlet Connections
1/4" Medium Pressure
1/4" Medium Pressure
3/8" Medium Pressure
9/16" Medium Pressure
* Porting Configuration
11022000A 20001102A 10102000B 20001010B 10102010C 20101010C 22011010D 10102201D 22001010E 10102200E 20101000F 10002010F 10022000G 20001002G 10102020J 20201010J 10202020K 20201020K 10202000L 20001020L 11022201M 22011102M 10002000N 20001000N 11022020P 20201102P 11002001Q 20011100Q 11022010R 20101102R 22001000U 10002200U 22011000V 10002201V 00000000W 00000000W 10012000X 20001001X 11021020Y 10201102Y
In
Out
Off
* Venting Options
Self-Venting
Self-Venting
Non-Venting
* Mod
No modification required
No modification required
Balanced Main Valve
Part Order Number:
checkLF691 - 01 - S - 50S - H - 02A - A - SV -
Pressure Tech LF691 Piston-Sensed Low-Flow Pressure Regulator With Ceramic SeatPressure Tech LF691 Piston-Sensed Low-Flow Pressure Regulator With Ceramic SeatPressure Tech LF691 Piston-Sensed Low-Flow Pressure Regulator With Ceramic SeatPressure Tech LF691 Piston-Sensed Low-Flow Pressure Regulator With Ceramic Seat
 
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Typical lead time: 6 working weeks
VIEW ACCESSORIESSee example of accessories typically ordered with this product.
 Product OverviewFeaturesSpecificationDownloads 
Overview
INTRODUCING THE LF691...
The LF691 is a piston-sensed low-flow reducing regulator with ceramic seating to provide the ultimate protection against the harsh service encountered on water-based hydraulic applications such as water glycol. In addition, the LF691 offers a plug design for supply above 690 bar (10,000 psi).

Its unique seating cartridge ensures the main valve is fully supported during operation to prevent ‘chattering’. The LF691 is supplied with a segregated captured vent to prevent deterioration to the loading mechanism and allowing media to be piped off to the return tank.

PLEASE CONTACT THE PRESSURE TECH OFFICE IF YOUR ORDER HAS ANY SPECIAL MODIFICATIONS OR REQUIREMENTS.
Accessories
PT-C-061-003-RING & PT-C-061-003-001-RING Panel Mount Ring
 
morePT-C-061-003-RING & PT-C-061-003-001-RING Panel Mount Ring
Panel Mount Ring: Stainless Steel or Aluminium / Suitable for Bodies with 65mm Diameter / Used on BP-LF550, BP-LF690, BP-MF690 (05), BP-MF690 (15), LF-690, LF-691, LF-692 and MF-414
  
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