To give you the best experience, this site uses cookies. Continuing to use this site means you agree to our use of cookies.
If you'd like to learn more about our cookie policy please click here.
Low-Flow Back Pressure Regulator: Gas or Liquid / Piston / Max. Rating: 1,034 bar (15,000 psi) / Control Range: Up to 900 bar (13,050 psi) / Cv 0.1 or 0.02
* Basic Model
BP-LF691G (Gas)
BP-LF691G (Gas)
BP-LF691H (Liquid)
* Cv Value
0.1
0.1
0.02
* Body Material
316/316L Stainless Steel
316/316L Stainless Steel
17-4PH Stainless Steel - Not suitable for H2
* Control Range
Up to 600 bar (8,700 psi)
Up to 600 bar (8,700 psi)
Up to 690 bar (10,000 psi)
Up to 900 bar (13,025 psi) - 17-4 Stainless Steel Body Material Required
* O Ring
NBR
NBR
FKM/FPM
* Inlet / Outlet Connections
1/4" MP
1/4" MP
1/4" NPT
3/8" MP
3/8" NPT
9/16" MP
1/2" NPT
* Porting Configuration
BL
Select Porting Configuration
Close
S
900S
17-4 PH Stainless Steel Body Material Required
900S
02N
MP Connection Required
900S
03N
MP Connection Required
900S
04N
MP Connection Required
Part Order Number:
BPLF691G - 01 - S - 600A - N - 02A - BL
PRICE & LEAD TIME: Submit online enquiry or contact the Pressure Tech Sales team:
INTRODUCING THE BP-LF691...
The BP-LF691 is a piston-sensed low-flow back pressure regulator for gas or liquid applications. As standard, the gas version includes a PEEK™ seat, whilst the liquid version features 316SS seating. Alternatively, other seats are available to suit your application including Titanium, Vespel® and Hastelloy®.
The BP-LF691 accurately controls inlet pressure and vents excess pressure back via the threaded 1/2" NPT / BSP or 9/16" MP outlet port.
PLEASE CONTACT THE PRESSURE TECH OFFICE IF YOUR ORDER HAS ANY SPECIAL MODIFICATIONS OR REQUIREMENTS.
APPLICATIONS: • Chemical injection systems • Valve test rigs • Liquid sampling • Supercritical liquid
FEATURES: • Piston-sensing element
• Range of seat materials
• Optional air actuator
• Low Cv (0.02)
Max. Rated
Control Range
Design Proof pressure
Seat Leakage
Weight
1,034 bar (15,000 psi)
Up to 900 bar (13,050 psi)
150% max. working pressure
In accordance with ANSI/FCI 70-3
2.9kg (6.4lbs)
PT-C-061-003-RING & PT-C-061-003-001-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
If you need to discuss an application or project, request a price or if you have any other query, we are available to speak from Monday to Friday from 08:30 to 17:00 (UK time).
BP-LF691 (English)
BP-LF691G-01-S-900S-E-02A-N
