Ham-Let H-900 SERIES Data Sheet
RELIEF VALVES
H-900 SERIES
VALVES & ACTUATORS
FEATURES
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H-900 is available as CE/PED products
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316 St.St. Construction
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Service 10-225 psi
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MAWP* 300 psi
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One spring for all set pressure range
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Available in all pipe threads and LET-LOK® connectors
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Sizes: 1/4" or 6mm
* Maximum Allowed Working Pressure.
GENERAL
The H-900 series is a relief valve for low pressure service.
The valve is normally closed. It will open when the system pressure
reaches the set level. It will re-close when the system pressure falls
below the set level.
1
2
3
VALVES & ACTUATORS
MATERIALS OF CONSTRUCTION
Item No. Components Qty. Valve Body Material
Cap Plug 1 Polypropylene
1
Adjustment Cap
2
Cap Lable 1 Polyester
3
Locking Nut
4
Upper Spring Button
5
Spring
6
Lower Spring Button 1 St.St. 316
7
Bonnet 1 St.St. 316
8
O-ring
9
O-ring 1 Fluorocarbon FKM
10
Retaining Ring
11
Stem 1 St.St. 316
12
Bonded Poppet
13
Insert 1 St.St. 316
14
Packing
15
Ring 1 St.St. 316
16
Body
17
STANDARD CONFIGURATION DIMENSIONS
Connection / size
Description
H-900
H-900
H-985
H-995
Inlet Outlet
1/4 LET-LOK®1/4 LET-LOK
6MM LET-LOK®6MM LET-LOK
1/4 Male NPT 1/4 Female NPT 32 1.26 30 1.18 40 1.57 88.6 3.49
1/4 Male NPT 1/4 LET-LOK
1 St.St. 316
1 St.St. 316
1 St.St. 316
1 St.St. 302
1 Fluorocarbon FKM
1 PH15 - 7 Mo
1 St.St. 316 Bonded with Fluorocarbon FKM
1 PTFE
1 St.St. 316
Orifce
mm inch mm inch mm inch mm inch mm inch
®
®
4.8 0.19
®
ABCD
37 1.45 39 1.53 50 1.97 96 3.78
37 1.45 39 1.53 50 1.97 96 3.78
32 1.26 39 1.53 50 1.97 88.6 3.49
Dimensions
4
5
6
7
8
9
10
11
12
13
Lock
Wire Holes
B
C
RELIEF VALVES H-900 SERIES
284
D
A
14
15
16
17
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