SUPERLOK SRV SERIES SUPERLOK RELIEF VALVES | 316 STAINLESS STEEL
APPLICATIONS: Instrumentation Devices
FEATURES
Compact design
Cracking pressure adjustable externally
Lock wire feature secures a given pressure setting
Each and every valve is tested at the factory
SET PRESSURE
Set pressure is the upstream pressure at which the first indication of flow occurs. Set pressure of each valve after initial relief is repeatable within 5% at room temperature.

|
1. VALVE SERIES
SRVL: Low Pressure
SRVH: Hight Pressure
2. END CONNECTION
S: Tube Fittng
MS: Male Pipe Thread & Tube Fitting
MF: Male Pipe Thread & Female Pipe Thread
3. INLET AND OUTLET CONNECTION SIZE & TYPE
FRACTIONAL
|
CONNECTION SIZE
|
1/4″
|
3/8″
|
1/2″
|
DESIGNATOR
|
4
|
6
|
8
|
|
METRIC
|
CONNECTION SIZE
|
6mm
|
8mm
|
12mm
|
DESIGNATOR
|
6M
|
8M
|
12M
|
THREAD
|
NPT
|
ISO TAPERED
|
DESIGNATOR
|
N
|
R
|
4. SPRING DESIGNATOR
Y: 225 – 750 psig
|
O: 1500 – 2250 psig
|
W: 3000 – 4000 psig
|
G: 5000 – 6000 psig
|
P: 750 – 1500 psig
|
B: 2250 – 3000 psig
|
R: 4000 – 5000 psig
|
5. BODY MATERIAL
SS: ASTM A182 F316 – STAINLESS STEEL
SRV SERIES | LOW PRESSURE SERIES

TECHNICAL DATA
-Maximum working pressure : 300 psig (20.6 bar)
-Cracking pressure range : 10~250 psig (0.69~17.2 bar)
-Orifice size : 4.8mm
-One spring for the full set pressure range
-If required spring kit, mention part no : RVL-SG
No.
|
Description
|
Material
|
No.
|
Description
|
Material
|
1
|
Body
|
SS 316
|
9
|
Seat Retainer
|
SS 316
|
2
|
Bonnet
|
SS 316
|
10
|
Seat
|
PTFE
|
3
|
Cracking Pressure Adj. Nut
|
SS 316
|
11
|
O-Ring
|
Viton
|
4
|
Retainer
|
SS 316
|
12
|
O-Ring
|
Viton
|
5
|
Stem Shaft
|
SS 316
|
13
|
O-Ring
|
Viton
|
6
|
Stem
|
SS 316
|
14
|
Spring
|
SS 304
|
7
|
Lock Nut
|
SS 316
|
15
|
Spring
|
Polyproplene
|
8
|
Spring Support
|
SS 316
|
–
|
–
|
–
|
SRV SERIES | HIGH PRESSURE SERIES

TECHNICAL DATA
-Maximum working Pressure: 6000 psig (413 bar)
-Cracking Pressure Range: 225~6000 psig (15.5~414 bar)
-Orifice size: 4.8mm
-Multiple springs for a selection of set pressure ranges
No.
|
Description
|
Material
|
No.
|
Description
|
Material
|
1
|
Body
|
SS 316
|
8
|
Spring Support
|
SS 316
|
2
|
Bonnet
|
SS 316
|
9
|
Stem Retainer
|
SS 316
|
3
|
Cracking Pressure Adj. Nut
|
SS 316
|
10
|
O-Ring
|
Viton
|
4
|
Retainer
|
SS 316
|
11
|
O-Ring
|
Viton
|
5
|
Stem Shaft
|
SS 316
|
12
|
Spring
|
SS 304
|
6
|
Stem Guide
|
SS 316
|
13
|
Cap
|
Polyproplene
|
7
|
Lock Nut
|
SS 316
|
–
|
–
|
–
|
Spring
Designator
|
Spring
Color
|
Cracking Pressure
|
||
psig
|
bar
|
kPa
|
||
Y
|
Yellow
|
225-750
|
15.5-51.5
|
1550-5150
|
P
|
Purple
|
750-1500
|
51.5-103
|
5150-10300
|
O
|
Orange
|
1500-2250
|
103-155
|
10300-15500
|
B
|
Brown
|
2250-3000
|
155-206
|
15500-20600
|
W
|
White
|
3000-4000
|
206-275
|
20600-27500
|
R
|
Red
|
4000-5000
|
275-344
|
27500-34400
|
G
|
Green
|
5000-6000
|
344-414
|
34400-41400
|
DIMENSIONS
PART NUMBER
|
ORIFICE
(mm)
|
END CONNECTION
|
DIMENSIONS (mm)
|
|||||
INLET
|
OUTLET
|
L1
|
L2
|
H
|
||||
SRVL
or
SRV
|
S
|
4
|
4.8
|
1/4″ SUPERLOK
|
38.7
|
37.3
|
104.6
|
|
S
|
6M
|
6mm SUPERLOK
|
38.7
|
37.3
|
104.6
|
|||
S
|
8M
|
8mm SUPERLOK
|
38.7
|
37.3
|
104.6
|
|||
S
|
6
|
3/8″ SUPERLOK
|
44.4
|
44.4
|
111.7
|
|||
S
|
8
|
1/2″ SUPERLOK
|
46.7
|
46.7
|
114.0
|
|||
S
|
12M
|
12mm SUPERLOK
|
46.7
|
46.7
|
114.0
|
|||
MS
|
8N-8
|
1/2″ Male NPT
|
1/2″ SUPERLOK
|
46.7
|
35.7
|
103.0
|
||
MS
|
8N-12M
|
1/2″ Male NPT
|
12mm SUPERLOK
|
46.7
|
35.7
|
103.0
|
||
MF
|
4N
|
1/4″ Male NPT
|
1/4″ Female NPT
|
30.0
|
32.1
|
99.5
|
||
MF
|
6N
|
3/8″ Male NPT
|
3/8″ Female NPT
|
34.5
|
32.2
|
99.5
|
||
MF
|
8N
|
1/2″ Male NPT
|
1/2″ Female NPT
|
38.0
|
35.7
|
103.0
|
