Check Valves
Direct and pilot operated check valve functions for applications
up to 350 bar (5000 psi) and 227 L/min (60 USgpm)
G
Section Contents
Typical Application Rated Flow
Model Pressure bar (psi)L/min (USgpm)Page Check Valves - Introduction, features & G-3 Check Valves, 2 way
<350 (5000) (NEW)....................................................8 (2)..........................................................G-4 CV3–8..........................350 (5000)................................................................30 (8)........................................................G-6 CV1–10........................350 (5000) (UPGRADED).........................................45 (12)......................................................G-8 CV3–10........................350 (5000) (UPGRADED).........................................76 (20)....................................................G-10 CV16–10.......................350 (5000)................................................................76 (20)....................................................G-12 CV11–12.......................350 (5000)................................................................114 (30)...................................................G-14 CV1–1
<210 (3000)................................................................151 (40)..................................................G-16 CV2–20........................210 (3000)................................................................227 (60)..................................................G-18 Check Valves with Bypass Orifice
CV6–10........................350 (5000) (NEW)....................................................76 (20)....................................................G-20 CV6–16........................210 (3000) (NEW).....................................................151 (40)..................................................G-22 Restrictive Check Valves
RCV3–10......................350 (5000) (NEW)....................................................76 (20)....................................................G-24 Single Pilot Operated Check Valves, Cartridge Type
<240 (3500)................................................................19 (5)......................................................G-26 SPC2–10......................210 (3000)................................................................23 (6)......................................................G-28 Single Pilot Operated Check Valves, In-line Housing Type
SPC1–10......................210 (3000)................................................................45 (12)...............................
.....................G-30 SPC1–16......................210 (3000)................................................................151 (40)..................................................G-32 SPC1–20......................210 (3000)................................................................227 (60)..................................................G-34 Single Pilot Operated Check Valves, Cartridge Type (high pressure)字母顺序
<.350 (5000)................................................................57 (15).....................................................350 (5000)................................................................114 (30)..................................................G-38 Double Pilot Check Valves, Cartridge Type
DPC2–8........................240 (3500)................................................................19 (5)......................................................G-40 Double Pilot Check Valves, In-line Housing Type
DPC1–10......................210 (3000)................................................................45 (12)....................................................G-42 DPC11–12....................350 (5000) (NEW)....................................................114 (30)..................................................G-44 DPC1–16......................210 (3000)................................................................151 (40)..................................................G-46 DPC1–20......................210 (3000)................................................................227 (60)..................................................G-48
This ction gives basic specifications for the full line of Vickers screw-in cartridge check valves. Its purpo is to provide a quick, convenient reference tool when choosing Vickers cartridge valves or design-ing a system using the components.
The Vickers range of direct and pilot operated check valves provides the hydraulic circuit designer with a wide lection of cartridge and in-line products.
Two pressure ratings are shown for all products featured in this catalog. The typical application pressure rating is the maximum recommended operating pressure for the valve in a given system. The fatigue pressure rating is the pressure for the valve to be free for infinite life from metal fatigue.
All poppet type check valve cartridges have hardened and ground poppets and sharp-edged ground steel ats. This provides an excellent product that is
dirt-tolerant, has reliable ating, and is suitable for fast cycling with long life. Direct operated check valves
Cartridges fit into industry standard cavities and may be supplied for installation in manifolds, or be provided in standard housings having SAE or BSPP ports suitable for in-line mounting.
A wide lection of cracking pressures is available from 0,21 to 20,7 bar (3 to 300 psi). Thus the opportunity exists to u the valves not only as conventional check but also as low pressure relief valves.Pilot operated check
valves
The valves are ud for:
• Position load locking
• As an alternative to
counterbalance valves
where neither the
overrunning loads or
relea speed are
factors in the
application.
The high pressure POC*-10
and POC*-12 ries of
pilot-to-open check valves
complement the CBV*-10
and CBV*-12
counterbalance cartridges
and are physically
interchangeable with them.
The POC’s provide a low
cost alternative to load
control when the dynamics
of neither overrunning loads
nor load relea speed are
factors to be considered in
the design of the hydraulic
circuit for the load to be
controlled.
The pilot-to-open valves
positively lock a load from
port 1 to port 2 until pilot
pressure applied to port 3
is sufficient to unat the
valve. This then permits
flow from port 1 to port 2.
The load can also be
relead through means of
an optional screw type
override.
The POC*-10 covers flow
up to 60 L/min (15 USgpm).
The POC*-12 covers flow
猫和兔up to 114 L/min (30
USgpm). With infinite life
qualification to a fatigue
pressure rating of 310 bar
(4500 psi), the POC
valves are suitable for u
in a broad range of load
control applications with
typical system operating
pressures up to 350 bar
(5000 psi). Tailoring of the
circuit to gain energy
savings while minimizing
shock is obtained through
the u of veral standard
cracking pressure ranges
from 2,0 bar (30 psi) to 7
bar (100 psi). When
anti-cavitation protection is
required, the 0,30 bar (5
psi) spring should be ud.
For tho applications
where pilot pressure may
not always be available, the
valve can be ordered with
an optional adjustable
override.
Features and benefits
•Products in this catalog
have been fatigue tested
for one million cycles at
132% or 10 million cycles
at 115% of rated
pressure.
• Simple load holding
device. Low cost
alternative to more
complex solutions when
overrunning loads are not
prent and / or control
of load relea speed is
not required.
• Provides high operational
efficiency and low spring
ttings.
• Valves are offered with a
wide variety of standard
housings with SAE and
BSPP port options in the
following configurations:
– In-line single
– In-line dual
– SAE, 4-bolt, code 61
– Clo coupled, nipple
mounted
– Gasket mounted single
– Gasket mounted dual
The valves can also be
ud in a C–10–3S or
C–10–3S cavity.
• Four standard cracking
深圳市物价局pressures permit energy
savings, while tailoring
the hydraulic system
requirements to minimize
shock.
• Unique dual spring design
provides high operational
efficiency and a low
pressure spring option
for effective anti-
cavitation protection.
• Unique design provides
compact package and
low pressure drops that
match or exceed current
market expectations and
provide for excellent
repeatability and stability.
• 3:1 pilot ratio satisfies
simple load holding
application requirements,
while providing smooth
operation and longer
operating life.
• Optional adjustable
override releas the
load for situations where
pilot pressure is not
always available.
Single pilot check
Also offered are SPC2-8
and SPC2-10 single pilot
check valves with
pressures to 240 bar (3500
psi) and flows to 23 L/min
(6 USgpm). The valves
operate similar to the POC1
product but offer an
opposite flow path which
offers the designer a choice
of pilot operated check
valve when laying out a
custom manifold for ea
of design.
Supporting products
Vickers screw in
cartridge valves are avail-
able in a wide range of
mounting configurations
and porting options to
provide flexibility in
developing circuits.
Housings are available in
either aluminum 210 bar
(3000 psi) or steel 350 bar
(5000 psi) configurations.
All are available with a
choice of BSPP
(ISO–0228/1) or SAE style
ports.
Description
The CV3-4-B is a ball type,screw-in cartridge check valve.
CV3-4
Check valve
2
1
Functional Symbol
Profile View
RATINGS AND SPECIFICATIONS
Performance data is typical with fluid at 21,8 cSt (105 SUS) and 49˚C (120˚F)Typical application pressure (all ports) 350 bar (5000 psi)Cartridge fatigue pressure (infinite life)350 bar (5000 psi) Rated flow 7.6 L/min (2 USgpm) Free flow cracking pressure @ 1 l/min (0.25 USgpm) 5– 0,34 bar (5 psi)Internal leakage, Port 2 to 1 5 drops/min maximum @ 210 bar (3000 psi)Temperature range -40°to 120°C (-40°to 248°F)Cavity C–4–2Fluids All general purpo hydraulic fluids such as:
MIL–H–5606, SAE 10, SAE 20, etc.
Filtration Cleanliness code 18/16/13Weight cartridge only 0,04 kg (0.09 lbs)Seal kit 9900174-000 Buna–N
9900175-00 Viton ®
Viton is a registered trademark of E.I. DuPont
Pressure Drop Curves Cartridge only
Operation
This valve remains clod until the bias is reached at port 1 at which time the
交通运输系统
poppet lifts off the at and allows flow from port 1 to port 2.
1
2
Flow - USgpm (105 SUS oil @ 120° F)
10000
.5
1
1.5
2
0 3.87.6 2.5
3
2003004007142028P r e s s u r e D r o p - p s i
P r e s s u r e D r o p - b a r
Pressure vs. Flow - L/min (21,8 cSt oil @ 49° F)
Model Code CV3 – 4 (V) – B – ***– **– 00
Dimensions
mm (inch)
Torque cartridge in
aluminum or steel housing to 8.1-13.6 Nm (6-10 ft. lbs)
2进击的巨人图片
4
5
3
1
6
7
林冲怎么死的
Function
CV3- Check valve Size 4- 4 Size亭林园
2
1
Seals
Blank - Buna-N V - Viton ®Style B -Ball type
4
3
Port size
000- Cartridge only Free flow cracking pressure
05- 0,34 bar (5 psi)
6
5Special features 00- None
(Only required if valve has special features - omitted if “00”)
7
玉米锅巴的做法
9/16" HEX
7/16 - 20 UNF - 2A
CV3-4
