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Reduced pressure small pilot valve for industrial usage
| Material | Stainless steel |
| Samples Time | 1) 2 days - For our existing samples for reference 2) 15 days - If new size, need make the new mould |
| OEM Acceptable | Yes |
| Production Capacity | 100,000 pcs each month |
| Packing Details | Poly bag, inner box, out carton and pallet. |
| Payment Term | T/T ,L/C,,D/P,D/A,PAYPAL,WESTERN UNION |
| Delivery Time | 20 days to 40 days after confirming the order |
| Minium Order Quantity | 500-1000 Pieces |
The shsuoTe ModelSCRDpressureReducingcontrolautomaticallyreduces
a higher inlet pressure to a lower outlet pressure. It isa direct acting,
spring loaded, diaphragm type control that operates hydraulically or p neu- mati call y. It may be used as a self-contained valve oras a pilot control for a c la-val main valve. It will hold a constant downstream pressure within
very close pressure limits.
OPERATION
The sCRD pressure Reducing control is normally held open by the force of the compression spring above the diaphragm; and delivery pressure acts on the underside of the diaphragm. Flow through the valve responds to
changes in downstream demand to maintain a pressure.
INSTALLATION
The sCRD Pressure Reducing control may be installed in any position. There is one inlet port and two outlets, for either straight or angle install a- tion. The second outlet port can be used fora gage connection. A flow arrow is marked on the body casting.
ADJUSTMENT PROCEDURE
The sCRDpressure Reducingcontrolcan be adjusted to provide adel iv-
ery pressure range as specified on the name plate.
pressure adjustment is made by turning the adjustment s crew to vary the spring pressure on the diaphragm. The greater the compression on the
spring the higher the pressure setting.
1. Turn the adjustment s crew in (clockwise) to increase delivery pressure.
2. Turn the adjustment s crew out (counter-clockwise) to decrease the delivery pressure.
3. when pressure adjustment is completed tighten jam nut on adjusting screw and replace protective cap.
4. when this control is used, as a pilot control ona
shsuoTe main valve, the adjustment should be made
under flowing conditions. The flow rate is not critical, but generally should be somewhat lower than normal in order to provide an inlet pressure several psi higher
MAINTENANCE Dis assembly
To disassemble follow the sequence of the item numbers assigned to parts in the sectional illustration.
Reassembly
Reassembly is the reverse ofdis assembly. caution must be taken to avoid having the yoke (17)drag on the inlet nozzle of the body (18).
Follow this procedure:
1. place yoke (17) in body and screw the disc retainer
assembly (16) until it bottoms.
2. Instal l gasket (14) and spring (19) for2-30 and 2-6.5 psi
range onto plug (13) and fasten into body. Disc retainer must enter guide hole in plug as it is assembled. screw the plug in by hand. use wrench to tighten only.
3. place diaphragm (12)diaphragm was her (11) and belleville was her (20) on yoke. screw on hex nut (10).
4. Hold the diaphragm so that the screw holes in the
diaphragm and body align. Tighten diaphragm nut with a wrench. At the final tightening release the diaphragm and permit itto rotate 5 to 102. The diaphragm holes should now be properly aligned with the body holes.
To check for proper alignment proceed as follows:
Rotate diaphragm clockwise and counterclockwise as far as possible. Diaphragm s crew holes should rotate equal distance on either side of
body screw holes ⃞1/8".
Repeat assembly procedure until diaphragm and yoke are properly aligned. There must be no contact between yoke and body nozzle during its normal movement. To simulate this movement hold body and diaphragm holes aligned. Move yoke to open and closed pos i-
t ions. There must be no evidence of contact or dragging.
5. Install spring (9)with spring guide (8).
6. Install cover (5),adjusting screw (2) and nut (3), then cap (1).
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