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Safety Relief Valves Series : SRV027
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Safety Relief Valves
Series : SRV027
DAWSONS-TECH® Safety Relief Valves Series : SRV027 have been very carefully designed and manufacture for High Pressure Applications.
Features / Benefits :
- Available in Material SS316.
- Identifying Coloured Springs for each pressure range.
- Replaceable Springs for variable pressure range.
- Every Valve is pressure tested.
- Available with Seal Material Viton® as Standard.
Operations
- The Poppet of Safety Relief Valves opens when the system pressure overcome the set cracking pressure.
- The Poppet of Safety Relief Valves closes when the system pressure goes below the set cracking pressure.
- To increase the cracking pressure of the Safety Relief Valves, simply tighten the adjustment cap clockwise.
- To decrease the cracking pressure of the Safety Relief Valves, simple open the adjustment cap anti-clockwise.
Operating Parameters
- Pressure Rating : UPTO 413 Bar (6000 PSIG)
- Cracking Pressure : From 3.4 Bar (50 PSIG) to 413 Bar (6000 PSIG)
- Temperature Rating : UPTO 121°C
- End Connections : Fractional 1/4″
- Pipe Threads : 1/4″ Male / Female BSP / BSPT / NPT
Applications :
- CNG Dispensers Fill-Line
Type Test Approvals :
- The design of DAWSONS-TECH® Safety Relief Valves Series : SRV027 have been tested to Hydrostatic Proof and Burst Test in accordance with MSS SP-99-2016a Clause 5.5 & 5.6.
Testing :
- Standard Test : Each Valve is Factory Tested for Cracking set pressure and re-sealing performance.
Certification :
- The certificate to 3.1 acc. to EN10204 for Valve Body Material and pressure test will be provided on request.
Material of Construction :
| Sr. No. | Part Description | Material |
| 1 | Valve Body | SS316 |
| 2 | Valve Insert | SS316 |
| 3 | Seat Seal | Viton |
| 4 | Clamp Screw | SS316 |
| 5 | Valve Poppet | SS316 |
| 6 | Retainer Ring | SS316 |
| 7 | Stem Seal | Viton |
| 8 | Bonnet ‘O’ Ring | Viton |
| 9 | Valve Bonnet | SS316 |
| 10 | Spring Support Disc | SS316 |
| 11 | Spring | Stainless Steel |
| 12 | Lock Nut | SS316 |
| 13 | Adjustment Cap | SS316 |
| 14 | Cap Plug | Brass |
| Connection Size | Orifice (mm) | Dimensions in mm | Dawsons-Tech Part No. | |||
| Inlet | Outlet | A | B | C | ||
| 1/4″ ODT | 1/4″ ODT | 3.6 | 105 | 36.6 | 40.7 | SRV027-TT4 |
| 1/4″ Male NPT | 1/4″ ODT | 3.6 | 98.5 | 30.2 | 40.7 | SRV027-M4N-T4 |
| 1/4″ Male NPT | 1/4″ Female NPT | 3.6 | 98.5 | 30.2 | 29.7 | SRV027-MF4N |
| 1/4″ Male BSPT | 1/4″ Female BSPT | 3.6 | 98.5 | 30.2 | 29.7 | SRV027-MF4RT |
| 6mm ODT | 6mm ODT | 3.6 | 105 | 36.6 | 40.7 | SRV027-TT6M |
| 8mm ODT | 8mm ODT | 3.6 | 105 | 36.6 | 40.7 | SRV027-TT8M |
Dimensions are for reference only and subject to change.